Answer: why do we even need math
Step-by-step explanation:
Which of the following is the correct equation for the trend line in the scatter plot?
The equation of the trend line will be : Y = (1/4)x - 1.
What is trend line in scatter plots?A trend line is a straight line that best represents the points on a scatterplot. The trend line may go through some points but need not go through them all.Given is a scatter plot a shown in the image.
The general equation of a straight line is -
y = mx + c
{m} - slope
{c} - intercept along the y - axis
We can find the slope as follows. The line passes through the points -
(4, 0) and (0, - 1). We can write -
m = (- 1 - 0)/(0 - 4)
m = - 1/-4
m = 1/4
and
[c] = - 1
So the equation of the trend line will be -
Y = (1/4)x - 1
Therefore, the equation of the trend line will be : Y = (1/4)x - 1.
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How many ways can someone purchase at least one CD from a group of 5
rock, 3 metal, and 7 punk CDs?
Answer:
Step-by-step explanation:
Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and the United States.
a A' (1, 1), B' (3, 9), C' (9, 3)
b A' (-1, -1), B' (-1, -3), C' (-3, -3)
c A' (3, 3), B' (9, 3), C' (3, 9)
d A' (3, 3), B' (3, 9), C' (9, 3)
Answer:
c is incorrect
Step-by-step explanation:
the mass liquid having a density of 1.40 g and a
volume of 3090 ml
The mass of the liquid is 4326 grams.
How to find the mass of a liquid?The liquid has a density of 1.40 g/ml and the volume of the liquid is 3090 ml. Therefore, the mass of the liquid can be calculated as follows:
The density of a liquid is a measure of how heavy it is for the amount measured. The liquid density is defined as its mass per unit volume.
Therefore,]
density = mass / volume
cross multiply
mass = density × volume
density = 1.40 g/ml
volume = 3090
Therefore,
mass of the liquid = 1.40 × 3090
mass of the liquid = 4326 grams.
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Jimmy bought one seedless watermelon
for $2. How many watermelons can
DeShawn buy if he has $6?
Answer:
3 watermelons
Step-by-step explanation:
So this is a basic unit rate problem, so you're going to divide:
6 ÷ 2 = 3
So DeShawn can buy 3 watermelons with $6
hope this helps:)
I will give branliest! My problem is NUHUHH
Step-by-step explanation:
Ok so basically you have to do
Determine which solution is correct for solving StartFraction 5 over 7 EndFraction y = 6using reciprocals.
Given:
The equation is:
[tex]\dfrac{5}{7}y=6[/tex]
To find:
The solution of the given equation by using the reciprocals.
Solution:
We have,
[tex]\dfrac{5}{7}y=6[/tex]
We need to multiply both sides by the reciprocal of [tex]\dfrac{5}{7}[/tex] to isolate the variable x.
The reciprocal of [tex]\dfrac{5}{7}[/tex] is [tex]\dfrac{7}{5}[/tex]. So, multiplying both sides by [tex]\dfrac{7}{5}[/tex], we get
[tex]\dfrac{5}{7}y\times \dfrac{7}{5}=6\times \dfrac{7}{5}[/tex]
[tex]y=\dfrac{42}{5}[/tex]
[tex]y=8.4[/tex]
Therefore, the value of y is 8.4.
Answer:
42/5
Step-by-step explanation:
BRAINLIST! Please help
In the right triangle ABC with altitude BD on hypotenuse AC, the length of AC is 40.
what is triangle ?A triangle is a polygon since it has three sides and three vertices. It is one of the basic geometric forms. The name given to a triangle with the vertices A, B, and C is Triangle ABC. A unique plane and triangle in Euclidean geometry are discovered when the three points are not collinear. Three sides and three corners define a triangle as a polygon. The triangle's corners are defined as the locations where the three sides converge. Triangle angles add up to 180 degrees when combined together.
given
Use similar triangles,
BAC and DAB are similar
therefore
CA/AB = BA/AD
CA/20 = 20/10
cross multiply
AC = CA = 20*20/10 = 40
Or use metric relations
CA*AD = BA^2
CA = BA^2/AD = 20^2/10 = 40
In the right triangle ABC with altitude BD on hypotenuse AC, the length of AC is 40.
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I know it says college level, but it isn't lol.
Six different students went to a used book sale. They recorded the prices of the books that they bought and created the dot plots below. Each X represents 1 book. Which of the following dot plots report a purchase of 8 books? Select all that apply.
Answer:
Options 3, 4, and 5
Step-by-step explanation:
just count the x's.
If it equals 8, then its correct
julio has 13 red marbles 4 blue mables and 8 yellow marbles julio draws a marble out of the bag 100 times how many time out of 100 can julio expect a blue marble
Answer:
16 times
Step-by-step explanation:
13 + 4 +8 = 25 total marbles
(4 is total number of blue marbles, 25 is complete total of marbles)
4/25 times = ?/100 times
Because 25 times 4 is equal to 100, you then multiply 4 by 4 to get 16
16/100 times
Jonah bought 36-ounce Big Mouth soda. After he drinks 27 ounces what percent of his soda is left?
Can y’all pls help me solve this!!
Answer:
From left to right picture,
Scale factor = 2/3
x = 24
y = 12
z = 21
Step-by-step explanation:
Look at the two figures and identify the sides where both lengths are known.
That is the top right-hand side.
Scale factor is hence 18/27 = 2/3
Next, find x, y and z:
Bottom left-hand side: 16/x = 2/3
x = 3/2 x 16
x = 24
Bottom right-hand side: y/18 = 2/3
y = 18 x 2/3
y = 12
Top left-hand side: 14/z = 2/3
z = 3/2 x 14
z = 21
Joe is using the function E= 1.89x + 2.89y to minimize his expenses when selling
markers and erasers. He has the following
constraints.
2x + y > 10
x + 2y > 8
X>0
y >
What is the minimum value of E?
$28.90
$9.45
$15.12
$13.34
Answer:
[tex](d)\ \$13.34[/tex]
Step-by-step explanation:
Given
[tex]E = 1.89x + 2.89y[/tex] -- Objective function
Constraints:
[tex]2x + y > 10[/tex]
[tex]x + 2y > 8[/tex]
[tex]x,y>0[/tex]
Required
Minimum value of E
To do this, we apply graphical method
See attachment for plots of [tex]2x + y > 10[/tex] and [tex]x + 2y > 8[/tex]
From the attached plot, the point that satisfy [tex]x,y>0[/tex] is:
[tex](x,y) = (4,2)[/tex]
So, we have:
[tex]E = 1.89x + 2.89y[/tex]
This gives:
[tex]E =1.89 * 4 + 2.89 * 2[/tex]
[tex]E =7.56 + 5.78[/tex]
[tex]E =13.34[/tex]
Constant of Variation
Find the y-intercepts of the graph y = 10/x² ?
a. There are no y-intercepts
b. y-intercept is (0,1)
c. y-intercept is (0,2)
d. y-intercept is (0,3)
Please select the best answer from the choices provided
Answer:
A. There are no y-intercepts
Step-by-step explanation:
I calculated it logically
y= 2x + 7 (List 4 Ordered Pairs for the equation) 1 points each
Answer:
(1,9), (2,11), (3,13) (4,15)
Step-by-step explanation:
When u plug in those numbers for your x values, you get those numbers for the y values.
Can someone pls help answer this asap!! I’d really appreciate it!
Answer:
124 degrees
Step-by-step explanation:
Since they are congruent the corresponding angles will be equal. There is only one obtuse in each triangle, Angles Y and N. N is measured to be 124 degrees so Y is also 124 degrees.
A study selected independent random samples of 50 dogs and 60 cats and found that 38 of the dogs and 15 of the cats could be trained to fetch a ball.
Do these data provide convincing evidence that the proportion of all dogs that can be trained to fetch a ball is greater than the proportion of all cats that can be trained to fetch a ball?
Use Alpha = 0.05.
Select all statements that are correct.
We have two independent random samples.
We have two groups in a randomized comparative experiment.
The 10% condition is met.
The 10% condition does not apply.
The expected number of successes and failures for both samples are 38, 12, 15, 45.
The expected number of successes and failures for both samples are 24, 26, 29, 31.
Answer:
Sorry for answering this late, only just found this.
Answers are
a. We have two independent random samples.
c. The 10% condition is met.
f. The expected number of successes and failures for both samples are 24, 26, 29, 31.
Step-by-step explanation:
EDGE 2021
Once I finish the assignment I'll be making a quizlet with the answers.
the ratio of students to adults at the open house is 9:7 suppose there are 832 students and adults at the open house. how many students are there
Answer:
To determine the number of students at the open house, you can use the fact that the ratio of students to adults is 9:7 and set up the following proportion:
students/adults = 9/7
You can then cross-multiply to find the value of "students":
7 * students = 9 * adults
7 * students = 9 * (832/(9+7))
7 * students = 832
students = 832 / 7
students = approximately 118.85714285714 students
To determine the number of students at the open house, you can use the fact that the ratio of students to adults is 9:7 and set up the following proportion:
Copy code
students/adults = 9/7
You can then cross-multiply to find the value of "students":
Copy code
7 * students = 9 * adults
7 * students = 9 * (832/(9+7))
7 * students = 832
students = 832 / 7
students = approximately 118.85714285714 students
Since the number of students must be an integer, the number of students at the open house is approximately 118 students.
Step-by-step explanation:
how many solutions are on this graph
Answer:
3
Step-by-step explanation:
Allen needs to prepare a compound for the patient to pick up tomorrow. He needs to mix 2/5 of drug A, with 5/3 of drug B and 9/3 of drug C. What is the total amount of the drugs mixed together?
Answer:
76/15 or 5 1/15
Step-by-step explanation:
2/5=6/15
5/3=25/15
9/3=45/15
6/15+25/15+45/15=76/15 or 5 1/15
A stew recipe uses 3 teaspoons of salt for every 4 cups of water.
Complete the table to show the relationship between the amounts of salt and water in the stew recipe. Enter a number in each box.
Can someone please help me quickly!! And also let me know if I got the first 2 correct
The amount of salt in 3/4 tablespoons is four times that of 3 tablespoons.
What is the amount of salt?A stew recipe uses 3 teaspoons of salt for every 4 cups of water.
There is a ratio issue here.
As X is to three, 3 is to 4.
3 : 4 :: X : 3
To eliminate the fractions, multiply each integer in the ratio by 12.
9 : 12 :: 9X : 12
This is a portion of what is
9 / 12 = 9X / 12
to obtain, cross-multiply.
9 / 12 = 3 teaspoons of salt,
Check: 3 cup of flour yields 3 cups, which is a 4x increase.
The amount of salt in 9/12 tablespoons is four times that of 3 tablespoons.
The amount of salt in 3/4 tablespoons is four times that of 3 tablespoons.
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A project requires you to figure out the area of a triangular lot. You take measurements and find that the lot has a base of 32 ft., while the altitude of the triangle, or height is 24 ft. What's the area of this lot?
The O'Neil family is taking a road trip. Their final destination is more than 243 miles from their house, and so far they have traveled 157 miles. Their
car can travel 21.5 miles on a gallon of gas. Which number line shows the solution set for the number of gallons of gas the O'Neil family needs to
reach their destination?
Answer:
The solution you are looking for is D.)
Step-by-step explanation:
To determine this, we need to find the amount of miles left they need to travel (243 - 157 = 86). Then we can divide that by the amount of miles per gallon (86 / 21.5 = 4). Because a possible solution to the answer is 4, we know that the dot needs to be solid (filled in), and because the solution can be greater than four, the arrow would be directed to the right / positive side of the line.
There is 42,000 litres of water in the lake this year. Find the water in the lake, a year ago if the
water of the lake is decreased by 30% every year.
Answer:
60,000 liters
Step-by-step explanation:
30% of 60000 = 18000
60000 - 18000 = 42000
་་བ་ཆེ། འོན་ཏེ་ ས་གནས་ཀྱི འན
རས་ན། ན་ནས། ན་བ་ བས་ ཆུ་
Answer:
???
Step-by-step explanation:
If 2^2x=2^3, what is the value of x?
Answer:
B) 3/2
Step-by-step explanation:
Find the volume of a cube that has a taotal surface area of 96 squares feet.
A.) 84.0ft³
B.) 84.06ft
C.) 84.06ft³
D.) 84.06ft^2
a movie theater has 24 screens. ration of action to other films is 1:2. How many action films are currently showing
Answer: 12
Step-by-step explanation: Because of the ratio we know that half of the screens will be showing action films. Half of 24 is 12, so 12 screens will be playing action.
Find the slope of the line passing through each of the following pairs of points. (–7, 1) (7, 8)
Answer:
1/2
Step-by-step explanation:
Slope(m)
= (y2 - y1)/(x2 - x1)
= (8 - 1)/(7+7)
= 7/14
= 1/2