Mathematics College

Please answer the attachment!

Answers

Answer 1

I hope this helped
_______________

Answer 2

The perimeter of any shape is the length of all the sides added up:

1. For the rectangle

[tex]6 + (3x - 1) + (3x - 1) + 6 = 6x - 2 + 12 =6x + 10[/tex]

2. For hexagon

[tex]10.2 + (x+4)+(x+4)+10.2+(x+4)+(x+4)=4x + 16 + 20.4=4x + 36.4[/tex]

Hope that helps!

Related Questions

The sum of two numbers is 143 and their difference is 7. What are the numbers?

Answers

Answer:

The numbers are 75,68

Step-by-step explanation:

Let the number be a ,b

The sum of two numbers is 143

⇒ x + y = 143 -------------(I)

Their difference is 7

⇒ x - y = 7 --------------(II)

Add the equation (I) & (II) and thus y will be eliminated and we can find the value of x

(I) x + y = 143

(II) x - y = 7 {Now add}

2x = 150

x = 150 ÷ 2

x = 75

Substitue x = 75 in equaion (I)

75 + y =143

y = 143 - 75

y = 68

Refer to the graph representing the number of hybrid cars sold in January in the United States for the given years.
What is the difference between the January sales in 2008 and 2007?
The difference is _____ cars.

Answers

Answer:

First, let's find how many hybrid cars are sold during those two years.

2007 = 17,300 hybrid cars were sold

2008 = 22,600 hybrid cars were sold

Find the difference by subtracting the cars in 2007 from 2008.

22,600(2008) - 17,300(2007)

= 5,300

The difference is 5,300 cars.

please help me with this graph problem. NO LINKS!!!

Answers

Step-by-step explanation:

Eric runs for 4 min and walks for 8 min.

The distance covered is

4*200 + 8*80 = 800 + 640 = 1440

The goal of 1600 m is not met, needs additional 160 m

The equation of distance is

d = 200x + 80y

For d = 1600, the equation is

200x + 80y = 1600

Simplified form of it

2.5x + y = 20

Some combinations of x and y to make the equation right

x = 2, y = 15x = 4, y = 10x = 6, y = 5

See the attached graph for more combinations, where the first coordinate represents running time and the second coordinate - walking time

Answer:

Part (a)

Given:

Average running speed = 200 m/minAverage walking speed = 80 m/min

If Eric runs for 4 minutes ⇒ 200 x 4 = 800 m

If Eric walks for 8 minutes ⇒ 80 x 8 = 640 m

Total distance covered = 800 + 640 = 1440 m

Therefore, he is 160 m away from his 1600 m goal.

Part (b)

Let x = number of minutes Eric runs

Let y = number of minutes Eric walks

Let d = total distance Eric covers

Equation: d = 200x + 80y

Part (c)

Set d = 1600, then rewrite to make y the subject:

200x + 80y = 1600

⇒ 5x + 2y = 40

⇒ 2y = 40 - 5x

⇒ y = 20 - 2.5x

Now find ordered pairs (points on the line):

x-intercept (y = 0): 20 - 2.5x = 0 ⇒ x = 8 ⇒ (8, 0)y-intercept (x = 0): 20 - 2.5(0) = 20 ⇒ (0, 20)when x = 4: 20 - 2.5(4) = 10 ⇒ (4, 10)

Part (d)

Plot (8, 0) (0, 20) and (4, 10) and connect with a straight line.

(see attached graph)

From inspection of the graph, other combinations of running and walking times for which Eric would cover 1600 meters are:

2 minutes running, 15 minutes walking6 minutes running, 5 minutes walking

I need help with this crazy Algebra 1a problem!
You have 14 coins in your pocket that are either quarters or nickels. The total value of the coins is $2.50.
A. Write a system of two equations that represents this situation. Let q represent the number of quarters and n represent the number of nickels.
B. Solve each equation for q.
D. What is the solution to the system?
E. Verify that the answer to part D is correct using the answer to part A.
F. How many of each coin are there?

Answers

Answer:

See below.

Step-by-step explanation:

A. First equation is

q + n = 14

then we have

0.25q + 0.05n = 2.5

Multiply last equation by -20

-5q - n = -50 Now add this to the first equation

-4q + 0 = -36

B. q = -36/-4 = 9.

D Substitute for q in the first equation

9 + n = 14

n = 14 - 9 = 5.

So the solution to the system is q = 9, n = 5.

E Verify this solution by substituting in the second equation:

0.25(9) + 0.05(5)

= 2.25 + 0.25 = 2.50.

- verified.

F. 9 quarters and 5 nickels.

In 2010, a city’s population was 49,339 and it was declining at a rate of 1.06% each year.

Which is the best prediction for when the city’s population will first be below 35,000?

2036

2039

2042

2045

Answers

Answer: the answer is 2042 or C

Step-by-step explanation:

Answer:

2042

Step-by-step explanation:

took the test

A triangle has side lengths 25, 15x and 20x. The longest side is 25. What value for x proves that this triangle is a right triangle?

Answers

Answer:x = 1Step-by-step explanation:

To prove that this triangle is a right triangle, we need to check the side lengths using pythogoras theorem.

Given:

Longest side = 25 unitsTriangle side lengths: 25, 15x, and 20x

Putting the side lengths into pythogoras theorem:

⇒ [tex]25^{2} = 15^{2} + 20^{2}[/tex]⇒ [tex]625 = (10x + 5x)^{2} + (20x + 0x)^{2}[/tex]

Using the formula "(a + b)² = a² + 2ab + b²

⇒ [tex]625 =[(10x)^{2} + 2(10x)(5x) + (5x)^{2} ] + [(20x)^{2} + 2(20x)(0) + (0)^{2} ][/tex]⇒ [tex]625 = [(10x)(10x) + 2(10x)(5x) + (5x)(5x)] + [(20x)(20x)][/tex]⇒ [tex]625 =[100x^{2} + 100x^{2} + 25x^{2} ] + [400x^{2} ][/tex]⇒ [tex]625 = 100x^{2} + 100x^{2} + 25x^{2} + 400x^{2}[/tex]⇒ [tex]625 = 625x^{2}[/tex]

Divide both sides by 625:

⇒ [tex]\frac{625}{625} = \frac{625x^{2}}{625}[/tex]⇒ [tex]1 = x^{2}[/tex]⇒ [tex]\sqrt{1} = \sqrt{x^{2} }[/tex]⇒ [tex]\sqrt{1 \times 1} = \sqrt{x \times x }[/tex]⇒ [tex]1 = x[/tex]

The value of x that proves this triangle a right triangle is 1.

x = 1

If it is a right angle triangle

→ (short side)² + (short side)² = (long side)²

given long side is 25

====================================

(15x)² + (20x)² = 25²225x² + 400x² = 625625x² = 625x² = 1x = √1x = ±1

as distance is positive

x = 1

find the volume of the prism

Answers

[tex] \huge\fbox\orange{ANSWER} [/tex]

[tex] \mathsf \purple{v = l \times w \times h}[/tex]

[tex] \mathsf \pink{v = 8 \times 2 \times 5}[/tex]

[tex] \mathsf \purple{v = 80 \: cubic \: units} [/tex]

Answer:

80 cubic units

Step-by-step explanation:

Given

Height = 5 unitsLength = 8 unitsWidth = 2 units

Volume = Length x Width x Height

V = 8 x 2 x 5V = 40 x 2V = 80 cubic units

Please help on math.

Answers

45
The median is the number in the middle of the box

To know witch one it is look for the dot in the middle

A square pyramid has a height of 6 units and a volume of 70 units. If a square prisn
has the same base area and volume as the square pyramid, what is its height?
O2 2 units
4 units
6 units
08 8 units

Answers

Answer:

6 units

Step-by-step explanation:

Volume of square pyramid is

1/3 * base area * height

For the first pyramid

70 = 1/3 * base * 6

base = 35

For the second pyramid

70 = 1/3 * 35 * h

h = 6

please help me with this question

Answers

Answer:

119

Step-by-step explanation:

64 + 23 + 32

119 I think

Solve for y. 2y - 5 = 5y - 11

Answers

Answer:

y = 2

Step-by-step explanation:

Given equation:

[tex]2y - 5 = 5y - 11[/tex]

Subtract 5y both sides:

[tex]\implies 2y - 5 = 5y - 11[/tex]

[tex]\implies 2y - 5 - 5y = 5y - 5y - 11[/tex]

[tex]\implies -3y - 5 = -11[/tex]

Add 5 both sides:

[tex]\implies -3y - 5 = -11[/tex]

[tex]\implies -3y - 5 + 5 = -11 + 5[/tex]

[tex]\implies -3y = -6[/tex]

Multiply -1 both sides:

[tex]\implies -3y = -6[/tex]

[tex]\implies \dfrac{-3y}{-1} = \dfrac{-6}{-1}[/tex]

[tex]\implies 3y = 6[/tex]

Divide 3 both sides:

[tex]\implies 3y = 6[/tex]

[tex]\implies \dfrac{3y}{3} = \dfrac{6}{3}[/tex]

[tex]\implies \boxed{y = 2}[/tex]

ASAP . Solve and graph each inequality

Answers

x less than or equal to-24

Answer:

x less than or equal to -24

graph attached

Step-by-step explanation:

attached in image

$35
130
b Bettieis Boutlque is having a 20% off sale
original price sale price
$15
$12
$25
120
$35
$28

Answers

Assuming we need to find out what 20% off of the prices listed is, we can set up equations for each of them, where x is the original price.

New price = [tex]\frac{8}{10} x[/tex] or simplified to [tex]\frac{4}{5} x[/tex]

So, putting the original prices through the formula, we get these values:

$15 --> $12
$12 --> $9.60
$25 --> $20
$120 --> $96
$35 --> $28
$28 --> $22.40

Sophie purchased a pair of Airpods that cost
$215. She used a coupon that offers 12% off.
How much did Sophie spend on the Airpods after
the discount?

Answers

Answer:

$189.20

Step-by-step explanation:

Since 12% off is the same thing as 88% of the original value, then you can simply multiply 215 by 0.88. This results in 189.2.

Answer:

$189.2

please make this answer brainliest If I helped you!

What are the zeros of this function?
5
O A. x = 0 and x = 2
O B. x = 0 and x = -4
O c. x= 0 and x = 4
O D. x = 2 and x = -4
PLEASE HELPPP
THANK YOUUU

Answers

Answer:

At origin x-axis and y-axis are Zeros and when the the will at x-axis then y-axis wil zero so,

C is the right answer

The teacher’s bookshelf is 7 feet tall. She builds one more shelf on it that is ¾ of a foot tall. How tall is her bookshelf now?

Answers

All correct answers bellow (in order of most logical units to be using)

7 3/4 feet
7foot 9inches
236.22cm
2m 36.22cm

pls help me with this

Answers

Answer:

the rule is multiply input by 25 then add 2, for example 2 x 25 = 50, 50 + 2 = 52

Step-by-step explanation:

this is because you minus 2 from the output to see the pattern from input. For example, 52 - 2 = 50 and to get from 2 to 50 you have to multiply by 25. This can be seen in the other numbers as well. Therefore the answer as a graph will be y = 25x + 2

Answer:

52 divided by 2 equal 26

102 divided by 4 equal 25.5

127 divided by 5 equal 25.4

177 divided by 7 equal 25.28

202 divided by 8 equal 25.25

Step-by-step explanation:

Complete the ratio that can be used to solve this problem. 15 points

Answers

No I won’t because I just need the points

please help!!!

A store is advertising a sale with 15% off all prices in the store. Sales
tax is 8%.

Which expressions represent the total cost of buying an item with
an original price of p, after the dischwunt and sales tax are included?

A. 1.08p - 0.15p
B. 1.15p + 0.08p
C. 1.08(0.85p)
D .85p + (0.08)(0.85p)
E. p - 0.15p + 0.08p

Answers

Answer:

The right answer is C

Step-by-step explanation:

1.08(0.85p)

Solve the equation below by factoring:

Answers

[tex]\huge\fcolorbox{blue}{aqua}{Answer:}[/tex]

═════════════════════

Answer: =A.[tex]x = - 3[/tex] [tex]x = - 4[/tex]

Solution:

[tex]x ^ { 2 } +7x=-12[/tex]

[tex]x^{2}+7x+12=0 [/tex]

[tex]a+b=7 ab=12 [/tex]

[tex]1,12 2,6 3,4 [/tex]

[tex]1+12=13 2+6=8 3+4=7 [/tex]

[tex]a=3 b=4 [/tex]

[tex]\left(x+3\right)\left(x+4\right) [/tex]

[tex]x = -3[/tex] , [tex]x = -4[/tex]

so the answer is = A.

════════════════════

Explanation:

#Carry on learning

Ask: Which two numbers add up to 7
7 and multiply to 12?
3 and 4

Rewrite the expression using the above.
(x+3)(x+4) = 0
x+3=0 or x+4=0
So x = -3 or x= -4

A veterinarian collects a random sample of 40 cats that she has treated over the years and indicated the number of years each cat lived. Ten of the forty cats lived to be over 11 years old.
1. Use the Empirical Rule to construct a 99.7% confidence interval of the proportion (round to three decimal places) of all cats that will live to be more than 11 years old.
2. What sample size should the veterinarian use to achieve a margin of error of no more than 8% for the 99.7% confidence interval using the Empirical Rule? Use p=0.5 since we do not know the exact population proportion.

Answers

Answer:

1. 0.047, 0.453

2. 343

Step-by-step explanation:

The confidence interval regarding the veterinarian will be (0.045, 0.455).

How to depict the confidence interval?

Sample success = 10

Sample size = 40

Pt estimate = 10/40 = 0.25

Standard error = 0.0685

The corresponding interval is (0.045, 0.455).

The sample size that the veterinarian should use to achieve a margin of error will be:

Margin of error = 0.08

Critical Z = 3.0

Estimated proportion = 0.5

Sample size = p × (1-p) × (z/e)²

= 0.5 × (1-0.5) × (3/0.08)²

= 352

Learn more about confidence interval on:

https://brainly.com/question/15712887

Mai drank x oz of juice and Kiran
drank more than that.

Answers

Answer:

x≤k

Step-by-step explanation:

k= how many oz. Kiran drank. -Crispin

4. In the figure below, rays KV and JP intersect at point M
K
Р
M
Which expression has a value that is equal to MPMV?
A 180° (MLKJM M JKM)
B 180° - (m_KJM
-
m/KMJ)
C 180°
(m. JMK)
D 180°
(m/JKM)

Answers

The intersection of the rays KV and JP would create vertical angles

The expressions that have the equal values as PMV are KMJ, 180 - JMV and 180 - PMK

How to determine the expression with equal value?

The rays are given as:

Rays KV and JP

The point of intersection is given as:

Point M

When the rays KV and JP intersect at point M, the following angles are created

KMJ, JMV, PMV and PMK

Such that:

KMJ and PMV are vertical angles JMV and PMK are vertical angles

The above means that angles KMJ and PMV are equal and

PMV = 180 - JMV

PMV = 180 - PMK

Hence, the expressions that have the equal values as PMV are KMJ, 180 - JMV and 180 - PMK

Answers

Answer:

The answer is $64.

Formula for simple Interest is P x R x T/100. Which is $8000 x 8 x 1/100 = $64

Help. Parallelogram ABCD is shown with vertices A(−2, 3), B(3, 3), C(2, −3) and D(−3, −3)

Answers

The coordinates of the image of the parallelogram ABCD after the transformations are A''(-2,-3), B'(3, -3), C'(2, 3) and D'(-3, 3)

How to determine the final vertices?

The coordinates of the parallelogram ABCD are given as:

A(−2, 3), B(3, 3), C(2, −3) and D(−3, −3)

When reflected across the y-axis, the rule of transformation is:

(x,y) -> (-x,y)

So, we have:

A'(2, 3), B'(-3, 3), C'(-2, -3) and D'(3, −3)

When rotated by 180 degrees, the rule of transformation is:

(x,y) -> (-x,-y)

So, we have:

A''(-2,-3), B'(3, -3), C'(2, 3) and D'(-3, 3)

Hence, the coordinates after the transformations are A''(-2,-3), B'(3, -3), C'(2, 3) and D'(-3, 3)

Answers

Answer ¹ ↷$ 12

Solution ↷

The amount of money Trevon had last Friday⇢$29

The total amount of money he has after cleaning the attic⇢$41

So,

The amount of money he received after cleaning the attic ⇢ Total money he has after cleaning the attic - The money he had last Friday

⇢ $41-$29⇢$12

Thus ,he received $ 12 for cleaning up the attic.

Answer²↷$9.02Solution ↷

The cost of the game ⇢$30.98

The amount of money she gave to the cashier ⇢$40

The amount she'll receive back⇢ the amount of money she gave to the cashier - the cost of the game

⇢$ 40 - $ 30.98⇢$ 9.02

Hence , she'll receive $ 9.02 back from the cashier.

Answer:

Question 1

Given:

Last Friday Trevon had $29He received money for cleaning the atticHe now has $41

To calculate the money Trevon received for cleaning the attic over the weekend, we need to find the difference between the money he started with and the money he now has. To find the difference, subtract the smaller number from the bigger number:

⇒ Money Trevon received = Money he has now - money on Friday

= $41 - $29

= $12

Therefore, Trevon received $12 for cleaning the attic over the weekend.

Question 2

Given:

Cost of game = $30.98Money gave the cashier = $40

To calculate the change Jenny received from the cashier, we need to find the difference between the two amounts. To find the difference, subtract the cost of the game from the money Jenny gave to the cashier:

⇒ Change = money given - cost of game

= $40 - $30.98

= $9.02

Therefore, Jenny received $9.02 in change from the cashier after paying for a game that costs $30.98 with $40.

four triangles are formed by joining the midpoints of three sides of an equilateral triangle

Answers

Answer:

all are congruent

Step-by-step explanation:

Four triangles are formed by joining the mid points of the three sides of a triangle then all are congruent as sides of all triangles will be same as they are formed by joining the mid points.

Find the volume of the figure?

Answers

Answer:

Make two piece of this figure

Step-by-step explanation:

then use formula of v = l × b × h

what is the mode median mean and range of 4,5,0,2,3,1

Answers

Answer:

Mode = none, Median = 2.5, Mean= 2.5

Step-by-step explanation:

Hope this helps! :)

Step-by-step explanation:

the mode is the data item that occurres the most often.

but in 4, 5, 0, 2, 3, 1 every number appears only once. so, the mode is 0, 1, 2, 3, 4, 5 (as special case this average number can have more than one value - like in our case here).

the median is the value in the data set that lies directly in the middle between the other values (half of them are higher, the other half is lower).

if our data set has an even number of data points, or there is no unique middle value for other reasons, then the median is the mean value of the 2 middle values.

in our case 2 and 3 are the 2 middle values, so the median is (2+3)/2 = 2.5

the mean value is directly the average value across the whole data set : the sum of all values divided by the number of values.

(0+1+2+3+4+5)/6 = 15/6 = 2.5

the range is the difference between the highest and the lowest value in the data set : 5 - 0 = 0

Priya's favorite singer has made 6 albums containing 75 songs in total. Priya wants to make a playlist of 10 of
those songs, and she won't repeat 1 of the 75 songs.
The permutation formula n Pr can be used to find the number of unique ways Priya can pick and arrange the
songs for the playlist
What are the appropriate values of n and r?

Answers

The appropriate values of n and r are illustrations of permutation.

The values of n and r are 75 and 10, respectively

How to determine the appropriate values of n and r?

From the question, we have the following parameters:

Albums = 6Total songs = 75Songs to arrange in a album = 10

The above means that:

n = 75

r = 10

This can be interpreted as:

Arrange 10 songs from a list of 75 songs

Hence, the appropriate values of n and r are 75 and 10, respectively