a semiconductor manufacturer recently found that 3% of the chips produced at its new plant are defective. assume that the chips are independently defective or non defective. use a normal approximation to determine the probability that a box of 500 chips contains: (a) at least 10 defective chips (b) between 15 and 20 (inclusive) defective chips.
(a) The probability of having at least 10 defective chips is approximately 0.9131. (b) The probability of having between 15 and 20 defective chips is approximately 0.4135.
First, we need to find the mean (μ) and standard deviation (σ) for the binomial distribution.
μ = np = 500 * 0.03 = 15
σ = sqrt(np(1-p)) = sqrt(15*0.97) ≈ 3.66
(a) To find the probability of at least 10 defective chips, we'll calculate the Z-score and use a Z-table:
Z = (X - μ) / σ = (10 - 15) / 3.66 ≈ -1.36
P(X ≥ 10) = 1 - P(X ≤ 10) = 1 - 0.0869 = 0.9131
So, the probability of having at least 10 defective chips is approximately 0.9131
(b) To find the probability of between 15 and 20 defective chips (inclusive), we'll calculate the Z-scores and use a Z-table:
Z1 = (15 - 15) / 3.66 ≈ 0
Z2 = (20 - 15) / 3.66 ≈ 1.36
P(15 ≤ X ≤ 20) = P(Z1 ≤ Z ≤ Z2) = P(0 ≤ Z ≤ 1.36) = 0.4135
So, the probability of having between 15 and 20 defective chips is approximately 0.4135.
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Anyone help on this problem will be much appreciated! The population of a culture of the bacterium Pseudomonas aeruginosa is given by p(t) = -1698t^2 + 85,000t + 10,000 where t is the time in hours since the culture was started.
a. The time at which the population is at a maximum is 25 hours. b. The maximum population is 1,182,500.
What is quadratic function?A polynomial function of degree 2 is a quadratic function, while one of degree 1 is a linear function. The formula for a quadratic function is f(x) = ax² + bx + c, where a, b, and c are constants and an is not equal to 0. A parabola, a U-shaped curve, is the graph of a quadratic function. Depending on the sign of the leading coefficient, the function's minimum or maximum value is located at the parabola's vertex.
a) The highest value of the population function, which is a quadratic function with a negative leading coefficient, occurs near the parabola's vertex.
Thus, t = -b/2a.
Substituting the values a = -1698, b = 85,000, and c = 10,000 we have:
t = -85000 / 2(-1698) = 25
Therefore, the time at which the population is at a maximum is 25 hours.
b) To determine the maximum population we substitute the value of t = 25.
p(25) = -1698(25)² + 85,000(25) + 10,000 = 1,182,500
Therefore, the maximum population is 1,182,500.
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in a randomized controlled trial, sometimes patients agree to receive an intervention but later decide to stop taking the medication. moreover, some patients who were assigned to placebo decide to stop taking the placebo pill and buy the drug on their own (even when they do not know that they are taking a placebo pill). when this happens, researchers typically do the analysis according to the original assignment of the treatment regardless of the actual treatment received. what is the name of this procedure to analyze the data?
The procedure used to analyze the given data is intention-to-treat analysis.
The procedure to analyze data according to the original assignment of the treatment regardless of the actual treatment received is called the intention-to-treat (ITT) analysis. It is considered the gold standard in clinical trial analysis because it preserves the randomization and avoids bias that may arise from differential dropouts or non-compliance. By analyzing all patients according to their randomized group, the ITT analysis provides an unbiased estimate of the treatment effect and better reflects the real-world effectiveness of the intervention.
The intention-to-treat (ITT) analysis is different from other types of analyses because it includes all patients according to their original randomized group, regardless of whether they received the assigned treatment or not. This is in contrast to per-protocol analysis, where only patients who completed the study without any major protocol deviations are included, or as-treated analysis, where patients are analyzed according to the actual treatment received.
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please help!!! due tomorrow
(1 and 3 done)
The volumes of the figures are 728 cubic meters, 47.14 cubic yards, 1260 cubic centimeters, 5581.71 cubic inches and 860.07 cubic inches
Calculating the volumes of the figuresFigure 1:
The volume is calculated as
Volume = Product of dimensions/3
So, we have
Volume = 13 * 8 * 21/3
Volume = 728 cubic meters
Figure 2:
The volume is calculated as
Volume = πr²h
So, we have
Volume = 22/7 * 5² * 3/5
Volume = 47.14 cubic yards
Figure 3:
The volume is calculated as
Volume = Product of dimensions
So, we have
Volume = 14 * 18 * 5
Volume = 1260 cubic centimeters
Figure 4:
The volume is calculated as
Volume = 1/3πr²h
So, we have
Volume = 1/3 * 22/7 * 12² * 37
Volume = 5581.71 cubic inches
Figure 5:
The volume is calculated as
Volume = 1/3h(a² + b²)
So, we have
Volume = 1/3 * 13.3 * (16 * 6 + 14 * 7)
Volume = 860.07 cubic inches
Other dimensions are not clear
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ہے
A
Find the value of AB.
13
DE
E
12
AB= [?]
B
AB thus has a 12 unit length as the triangle ABE is a right triangle with hypotenuse AE and legs AB and 5 in length.
what is triangle ?A closed triangle is a two-dimensional geometric shape having three straight edges and three angles. The shorter of a triangle's two sides is known as the hypotenuse, while its long sides are known as the triangle's legs. The longest side's opposing angle is referred to as the greatest or "opposite" angle in triangles. Angles are given names based on where they are in relation to the sides. An essential component of geometry is the study of triangles, and there are numerous varieties with distinctive characteristics. An equilateral triangle, on the other hand, has three equal edges and 3 equal angles that are each 60 degrees in length. A right triangle, for instance, has one angle that is 90 degrees in length.
given
The Pythagorean theorem can be used to determine the length of AB.
We can see from the diagram that triangle ADE is a right triangle with hypotenuse AE and legs measuring 12 and 5 (DE - AE = AD = 13 - 8 = 5). Well, here we are:
[tex]AD^2 + DE^2 = AE^2\\AE^2 = 5^2 + 12^2\\AE^2 = 169[/tex]
AE = 13
In a similar way, we can observe that triangle ABE is a right triangle with hypotenuse AE and legs AB and 5 in length. Well, here we are:
AB2 = 169 - 25 when AE2 = AB2 + BE2 132 = AB2 + 5
AB^2 = 144
AB = 12
AB thus has a 12 unit length as the triangle ABE is a right triangle with hypotenuse AE and legs AB and 5 in length.
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how do you multiply 7(b-5)(b-4) step by step
To multiply 7(b-5)(b-4), you can follow these steps:
1.
Start by distributing the 7 to the terms inside the parentheses:
7(b-5)(b-4) = 7 * b * (b-4) - 7 * 5 * (b-4)
2.
Simplify each term using the distributive property:
= 7b^2 - 28b - 35b + 140
3.
Combine like terms:
= 7b^2 - 63b + 140
So, the final answer is 7b^2 - 63b + 140.
what rationale is correct for the nusre to empty a hemovac woudn suction device when it is half full
A nurse should empty a Hemovac wound suction device when it is half full to ensure proper functioning and prevent discomfort or injury to the patient due to the device becoming too heavy.
The rationale for a nurse to empty a Hemovac wound suction device when it is half full is to ensure the device is functioning correctly and to prevent it from becoming too heavy and potentially causing discomfort or injury to the patient.
When a Hemovac wound suction device is half full, it may start to lose suction, which can result in less efficient drainage of fluid from the wound site. By emptying the device, the nurse can ensure that the device is functioning correctly and that the suction pressure is maintained.
Additionally, allowing the device to become too full can make it heavy and uncomfortable for the patient, potentially causing discomfort or injury to the wound site. Therefore, emptying the device when it is half full can help prevent these complications and ensure that the patient remains comfortable throughout the healing process.
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the empirical rule assumes that the distribution of data follows a normal curve. group startstrue or false
The statement "The empirical rule assumes that the distribution of data follows a normal curve." is True.
The empirical rule, also known as the 68-95-99.7 rule, is a statistical rule that states that for a normal distribution, approximately 68% of the data will fall within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations. This implies that the distribution of data follows a normal curve.
A normal distribution is a type of probability distribution that follows a symmetrical bell-shaped curve. It is also known as the Gaussian distribution and is a continuous probability distribution. The normal distribution is defined by its mean, which is the average of the values, and its standard deviation, which is a measure of the spread of the values from the mean.
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Nicole is 1.55 meters tall. At 2 p.m., she measures the length of a tree's shadow to be 30.05 meters. She stands 25.6 meters away from the tree, so that the tip of her shadow meets the tip of the tree's shadow. Find the height of the tree to the nearest hundredth of a meter.
Answer:
approximately 1.81 meters.
Step-by-step explanation:
Let's call the height of the tree "h". We can set up a proportion based on the similar triangles formed by Nicole, her shadow, the tree, and the tree's shadow:
(height of Nicole) / (length of Nicole's shadow) = (height of tree) / (length of tree's shadow)
Substituting the given values, we get:
1.55 / 25.6 = h / 30.05
Simplifying and solving for h, we get:
h = (1.55 / 25.6) * 30.05
= 1.81181640625
Rounding to the nearest hundredth, we get:
h ≈ 1.81 meters
the height of the tree is approximately 1.81 meters.
what is the coefficent of x term
5xsquare plus 3x-2=
x/3=
Answer:
To solve this equation for the coefficient of the x term, we need to first simplify the equation by solving for x. 5x^2 + 3x - 2 = x/3 Multiplying both sides by 3 to eliminate the fraction, we get: 15x^2 + 9x - 6 = x Bringing all terms to one side: 15x^2 + 8x - 6 = 0 Now, we can use the quadratic formula to solve for x: x = [-b ± √(b^2 - 4ac)] / 2a where a = 15, b = 8, and c = -6 x = [-8 ± √(8^2 - 4(15)(-6))] / 2(15) x = [-8 ±
Write an equation tomorrow, the statement, the product of -8 and (y+3) is 32. How you can use the equation to reason about the value of Y?
The equation to model the statement is [tex]-8(y + 3) = 32[/tex] and the value of y is -7.
What is an Equation?An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.
Given statement is the product of – 8 and [tex](y + 3)[/tex] is 32.
Product means the operation is multiplication.
So the equation can be written as,
[tex]-8 (y + 3) = 32[/tex]
Dividing both sides by 8,
[tex]-(y + 3) = 4[/tex]
[tex]y + 3 = -4[/tex]
[tex]y = -4 - 3 = -7[/tex]
Hence the value of y is -7.
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what is the mean of 41,52,56,65,65,76,89
the mean of 41, 52, 56, 65, 65, 76, and 89 is 63.43.
Step-by-step explanation:
The mean of the value is 63.43what is the equation of a rational function that has a x-intercept at (6,0), vertical asymptote at x=-3, and horizontal asymptote at y=-1
[tex]f(x) = (2/3)(x - 6)/(x + 3)[/tex]
The vertices of a rhombus are located at the coordinates (1, 3), (4, 7), (9, 7),
and (6, 3)
Find the length of the horizontal sides of the rhombus and its perimeter.
Answer: To find the length of the horizontal sides of the rhombus, we need to find the distance between points (1, 3) and (9, 7), which is the same as the distance between points (4, 7) and (6, 3).
Using the distance formula:
d = √[(x₂ - x₁)² + (y₂ - y₁)²]
d = √[(9 - 1)² + (7 - 3)²]
d = √[64 + 16]
d = √80
d ≈ 8.94
So the length of the horizontal sides of the rhombus is approximately 8.94 units.
To find the perimeter of the rhombus, we need to find the distance between all four vertices and add them up.
Using the distance formula:
d₁ = √[(4 - 1)² + (7 - 3)²] = √25 = 5
d₂ = √[(9 - 4)² + (7 - 7)²] = √25 = 5
d₃ = √[(6 - 9)² + (3 - 7)²] = √16 + 16 = √32 ≈ 5.66
d₄ = √[(1 - 6)² + (3 - 7)²] = √25 + 16 = √41 ≈ 6.40
Perimeter = d₁ + d₂ + d₃ + d₄ = 5 + 5 + 5.66 + 6.40 ≈ 22.06
So the perimeter of the rhombus is approximately 22.06 units.
Step-by-step explanation:
Problems 13 & 14. Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar. If the triangles are similar, write a valid similarity statement.
The triangles ABE and CED are similar in figure 1 by SAS similarity criteria whereas in figure 2 the triangles PST and RPQ are not similar.
What is similar triangle?The triangles are similar if all angles in one triangle are congruent to corresponding angles in other triangle and sides are proportional. There are different criterias for similarity of triangles namely SSS, SAS, ASA/AAS and RHS. According to the criteria/rule
SSS(SIDE-SIDE-SIDE):triangles are similar, if all three sides of one triangle are proportional to the three sides of another triangle.
SAS(SIDE-ANGLE-SIDE):The b are similar if two sides are proportional and an angle included is congruent to two sides and included angle of another triangle.
ASA(ANGLE-SIDE-ANGLE):The triangles are similar if two angles are equal and an side between the angles is proportional to the two angles and side between the angles of another triangle.
Q13) Consider ΔABE and ΔCED ,
∠AEB = ∠CED = 90°
and,
AE=21 units ;BE= 26+16=42 units
CE=16 units ; ED=32 units
and
∴ Sides are proportional
Hence ΔABE is similar to ΔCDE by SAS criteria.
Q14)Consider triangles ΔPQR and ΔPST,
Given that ∠QPT=42°, and PR bisects ∠QPT
∴∠QPR=∠RPT=21°
Given that ∠PTS=102°,
In ΔPST, by angle sum property of triangle:
∠SPT+∠PTS+∠TSP=180°
21 + 102 + ∠TSP=180°
∠TSP=180° - 102 -21
∠TSP=57°
Given that ∠PRQ=58°
In ΔPRQ, by angle sum property of triangle:
∠RPQ+∠QRP+∠PQR=180°
21 + 58 + ∠PQR=180°
∠PQR=180°- 58 - 21
∠PQR=101°
In ΔPRQ the three angles are 21°,101° and 58° whereas in ΔPST the three angles are 21°,102° and 57°. As the angles are not congruent, the triangles are not similar.
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The remainders obtained when px³ + qx² + 4x − 2 is divided by x-1 and x + 2 are
equal. Show that 3p - q = -4. If also the remainder is -18 when the polynomial is
divided by x-2, find the value of p and of q.
Our first equation yields p = 0. We obtain q = 3p = 0 by substituting this in the second equation. Hence, p = q = 0. As a result, the values of p and q are both zero.
what is polynomial ?A polynomial is a mathematical equation composed of variables and coefficients that is solved using mathematical operations like combination, deletion, multiplication, and quel integer exponents.
given
The result of dividing the same polynomial by x + 2 is
(p[tex]x^{2}[/tex] + (2p-q)x + (5q-2))(x+2) + (q[tex]x^{3}[/tex] + q[tex]x^{2}[/tex]+ 4[tex]x^{2}[/tex]) (12p-9q-2)
p+2q-2 = 12p-9q-2
When we simplify this equation, we obtain:
11p + 2q = 0
=> 3p - q = -4 (by adding 22p to both sides and multiplying both sides by 2)
Now, we also understand that the polynomial, when divided by x – 2, leaves a remainder of -18. Synthetic division or polynomial long division yields the following results:
= (p (x-2)³ + (7p-2q)(x-2) (x-2)² + (18q-8p)(x-2)) - 18
When we compare coefficients, we find:
p = 7p - 2q = 18q - 8p = 0
Our first equation yields p = 0. We obtain q = 3p = 0 by substituting this in the second equation. Hence, p = q = 0. As a result, the values of p and q are both zero.
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find the value of g(7). g(x)=7/8x- 1/2
Answer:
Sure, I can help you with that! To find the value of g(7), we simply need to substitute x=7 into the expression for g(x): g(7) = (7/8)*7 - 1/2 g(7) = 49/8 - 1/2 g(7) = 95/8 Therefore, g(7) = 95/8.
0 / 350
Answer:
9. The weights, in pounds, of five pumpkins from a pumpkin patch are 17, 18, 17, 15, and 13.
What is the MAD of the weights?
Step-by-step explanation:
9. The weights, in pounds, of five pumpkins from a pumpkin patch are 17, 18, 17, 15, and 13.
What is the MAD of the weights?
m22 = 97°
m
3
2
4
10
9
11 12
m26 = 83°
5
7
n
13 14
15 16
8
9
→→S
Find measure of angle 14. (Just enter the number, no symbols)
A
Answer:
The measure of angle 14 is 83°.
Step-by-step explanation:
Angles 6 and 14 are congruent so if angle 6 is 83° so is angle 14.
Travis has the following books on his shelf: 6 myster, 5 science, 4 history, and 3 adventure. Travis will randomly choose 1 book to read. What is the probability (in fraction form) that he will choose a mystery book?
Answer: The probability that Travis will choose a mystery book is 1/3.
Step-by-step explanation: To find the probability that Travis will choose a mystery book, we need to determine the ratio of the number of mystery books to the total number of books on Travis's shelf.
Travis has 6 mystery books, and the total number of books on his shelf is 6 + 5 + 4 + 3 = 18.
Therefore, the probability (in fraction form) that Travis will choose a mystery book is 6/18.
To simplify this fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 6.
6 ÷ 6 = 1
18 ÷ 6 = 3
So, the simplified fraction is 1/3.
You estimate that it requires fifty minutes to serve 85 customers through a cafeteria line. If your normal lunch crowd averages 200 customers, about how much time will it take for the lunch crowd to go through the cafeteria line (assuming a constant flow of customers)? To the nearest minutes
Answer:
If 85 customers can be served in 50 minutes, then we can find the number of minutes per customer by dividing 50 by 85: 50 minutes / 85 customers ≈ 0.588 minutes per customer To estimate the time required for 200 customers, we can multiply the time per customer by the number of customers: 0.588 minutes per customer x 200 customers ≈ 117.6 minutes Rounding to the nearest minute, we can estimate that it will take about 118 minutes for the lunch crowd of 200 customers to go through the cafeteria line.
PLEASE HELP ILL GIVE BRAINLIEST
Answer: 1 and 5
Step-by-step explanation:
a box next to the register at tacos and stuff, where cooper works, is filled with different-flavored sauce packets. when a customer asks for some spicy sauce packets, cooper reaches into the box and pulls out a large handful of packets, looking for the spicy ones. here are the flavors he pulls out: mild, mild, spicy, medium, spicy, mild, spicy, super-hot, mild, spicy, super-hot, mild, mild based on the data, what is the probability that the next packet cooper pulls out of the box will be spicy?
Based on the given data, there are a total of 13 packets and 5 of them are spicy. Therefore, the probability that the next packet Cooper pulls out of the box will be spicy is 5/13 or approximately 0.385 (rounded to three decimal places).
To calculate the probability of the next packet being spicy, we need to know how many packets of each flavor are in the box. Assuming that Cooper doesn't put back the packets he has pulled out, we can count the number of spicy packets and divide it by the total number of packets he pulled out.
In this case, out of the 13 packets he pulled out, 5 were spicy. Therefore, the probability of the next packet being spicy is 5/13, or approximately 0.38, or 38%. However, if the box is refilled with packets of different flavors, this probability may not hold.
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Answer: 4/13
Step-by-step explanation: i did this IXL and this was the correct answer
Find the midpoint of the line segment with end coordinates of:
(−2,−4) and (−1,−5)
Give coordinates as decimals where appropriate.
What is the answer
Answer:
(- 1.5, - 4.5 )
Step-by-step explanation:
given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
( [tex]\frac{x_{1}+x_{2} }{2}[/tex] , [tex]\frac{y_{1}+y_{2} }{2}[/tex] )
here (x₁, y₁ ) = (- 2, - 4 ) and (x₂, y₂ ) = (- 1, - 5 ) , then
midpoint = ( [tex]\frac{-2-1}{2}[/tex] , [tex]\frac{-4-5}{2}[/tex] ) = ( [tex]\frac{-3}{2}[/tex] , [tex]\frac{-9}{2}[/tex] ) = (- 1.5, - 4.5 )
4. Given the following: X(7, 0), Y(7, 5) and Z(0, 5), calculate the distance or
length of XY, YZ, and XZ. What is the perimeter of the triangle?
a. 6.8 units
b. 11.3 units
c. 15.8 units
d. 20.6 units
Answer:
To calculate the distance or length of XY, YZ, and XZ, we can use the distance formula: Distance = √[(x2 - x1)^2 + (y2 - y1)^2] For XY: Distance = √[(7 - 7)^2 + (5 - 0)^2] Distance = √[0 + 25] Distance = √25 Distance = 5 units For YZ: Distance = √[(0 - 7)^2 + (5 - 5)^2] Distance = √[49 + 0] Distance = √49 Distance = 7 units For XZ: Distance = √[(0 - 7)^2 + (5 - 0)^2] Distance = √[49 + 25] Distance = √74 Therefore, the length
a cross-country course is in the shape of a parallelogram with a base of length 7 mi and a side of length 6 mi. what is the total length of the cross-country course?
The total length of the parallelogram-shaped cross-country course is equal to 26 miles.
We can calculate the total length of the cross-country course using the formula for the perimeter of a parallelogram, which is twice the sum of the lengths of its adjacent sides. In this case, the adjacent sides are the base of length 7 mi and the side of length 6 mi.
So, we can find the total length by first finding the sum of these two sides:
7 mi + 6 mi = 13 mi
Then, we can multiply this sum by 2 to get the total length:
2 x 13 mi = 26 mi
Therefore, the total length of the cross-country course is 26 miles.
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!!PLEASE HELPPP!! CHECK IF IM RIGHTTT
Answer:
You are correct
Step-by-step explanation:
Question 3
A circular garden has
Round to the nearest
a circumference of 39.25 feet. Find the approximate diameter of the garden. Use 3.14 for T.
hundredth if necessary.
ft
Answer:
Sure! To find the diameter of the garden, we can use the formula: circumference = π x diameter Given that the circumference of the garden is 39.25 feet and π is approximately 3.14, we can plug in the values and solve for diameter: 39.25 = 3.14 x diameter diameter = 39.25 ÷ 3.14 diameter ≈ 12.5 feet (rounded to the nearest hundredth) Therefore, the approximate diameter of the garden is 12.5 feet.
suppose your friends have the following ice cream flavor preferences: 70% of your friends like chocolate (c). the remaining do not like chocolate. 40% of your friends like sprinkles (s) topping. the remaining do not like sprinkles. 25% of your friends who like chocolate (c) also like sprinkles (s). of the friends who like sprinkles, what proportion of this group likes chocolate? (note: some answers are rounded to two decimal places.)
We can start by creating a table to organize the information:
Likes Chocolate (c) Does Not Like Chocolate (~c) Total
Likes Sprinkles (s) 0.25 0.40
Does Not Like Sprinkles (~s) 0.60
Total 0.70 0.30 1.00
We are given that 40% of friends like sprinkles, so we can fill in that cell of the table. We are also given that 25% of friends who like chocolate also like sprinkles, so we can fill in the cell for likes chocolate and likes sprinkles as 0.25.
To find the proportion of friends who like sprinkles and chocolate, we need to divide the number of friends who like both by the total number of friends who like sprinkles:
proportion = likes chocolate and sprinkles / likes sprinkles
proportion = 0.25 / 0.40
proportion = 0.625
So, approximately 62.5% of friends who like sprinkles also like chocolate.
i need help with this question?
Answer:
D. [tex]\sqrt{3}[/tex] ; 2
Hope this helps!
Step-by-step explanation:
Last night the temperature on a thermometer was −4°F. The temperature this morning was colder than last night. Which could represent the temperature on the thermometer this morning?
Select all the correct answers.
Answer:
-5, -12
Step-by-step explanation:
We just have to find somthing colder than -4f so it has to be less than -4 so it would be -5 and -12.
The correct answers to your question would be -5 and - 15.