Math book question, I need this very soon

Answers

Answer 1

Answer:

1) -31.5 + 10 = -21.5

2) -10 + -11.5 = -21.5

Related Questions

A store purchased a DVD for $12.00. The store charged a 50% markup on the purchase price. The customer was also charged a 7% tax when the DVD was sold. What was the customer's total cost for the DVD?

Answers

Answer:

19.26$

Step-by-step explanation:

Sold DVD for

more of the purchase price of

100

(

)

So customer will pay

tax on

Hence he will pay

(

1.07

)

19.26

HELPPPPPPPPPPPPP ME!!!

Answers

Answer:

180 squred feet

Step-by-step explanation:

We simply multiply all three different areas of surfaces by two

Simplify the radical expressions.

Answers

I hope this helps :)
(I simplified the radical expressions on the picture below)

Directions: Match the slope and y-intercept values to the correct boxes below.

PLEASE HELP!!!!!!

Answers

Answer:

slope is -3

y-intercept is 3

Step-by-step explanation:

Answer:

y-intercept: 3

Slope: -3

Step-by-step explanation:

y-intercept

To find the y-intercept, see what point on the y-axis (vertical bold line on the graph) the line passes through.

Slope

To find slope, find 2 points (from left to right) on the line and and put the height difference over the width difference in a fraction (simplify if possible). At points (0,3) and (1,0) there is a height drop of 3 (so -3) and a width of 1 and [tex]\frac{-3}{1}[/tex] gives you a slope of -3.

What is 2/5 over 3/7?

I need answer pls

Answers

The answer to the equation is 14/15

Answer:

14/15

Step-by-step explanation:

2/5 /3/7 so you do 2/5 *7/3 = 14/15

whoever answers correctly = brainliest

Answers

1. x = 31

2x + x - 3 = 90

3x - 3 = 90

3x - 3 + 3 = 90 + 3

3x + 93

3x / 3 = 93 / 3

x = 31

NPO =

90 - (x - 3) = 2x

90 - (31 - 3) = 2 * 31

90 - (28) = 62

62 = 62

KPN =

90 - 62 = KPN

28 = KPN

Math!!! Friend needs help!!!!!!!

Answers

Answer:

Step-by-step explanation:

p - 6 = 11

p = 17

Answer:

i wish i could help

Step-by-step explanation:

2) Thomas wants to find the difference
1/2 (6x - 2) - (2x + 1)

He does the following:

1/2 (6x - 2) - (2x + 1)
3x - 1 - x + 1/2 =
3x + x - 1 + 1/2 =
4x - 1/2

Is this correct? If not, show the correct procedure and explain where Thomas made his mistake.

Answers

He is not correct, his mistake was multiplying 1/2 to 2x and 1, when you should have multiplied the negative to them.

Answer:

Thomas is not correct, x-2 is the correct answer

Step-by-step explanation:

Thomas made his mistake by multiplying the 1/2 by both (6x-2) and -(2x+1). Thomas should have multiplied the 1/2 by just the (6x-2).

Correct procedure:

1/2 (6x-2)-(2x+1)

(3x-1)-(2x+1)

3x-1-2x-1

x-2

Fill in the blanks to explain how Harry can check whether his solution is correct

Answers

Answer is in bold

Harry can first substitute 30 for t. He can then multiply [tex]\frac{1}{3}[/tex] by 30 to get a product of 10. Since 15 is equal to 30 × 1/2, Harry's solution is not correct.

Hope this helps :)

Have a great day!

Trying to see who would be the first to answer an easy question-
Right answers onlyyy

Answers

I think if you do 20 multiplied by 5 it would be $100

Total change = 20 times $5 = $100
Total change = quantity times unit of change

Tim and Sasha are making a model sailboat. They want the sail to be in the shape of a right triangle. If the legs of the sail measure 8 and 15 inches, what would be the length of the hypotenuse?

Answers

Around 16 squared is the answer

8^2 + 15^2 = 289
square root of 289 = 17
hypotenuse = 17 inches

A retail shop is replacing their flooring with laminate wood. The floor plan is shown below. Determine the total square feet of laminate wood needed to complete the the job

Who ever gets this right I will give brainliest

Answers

Answer:

its 123 look at the immage

Step-by-step explanation:

Please help me it’s currently 10:26 pm and I don’t understand this math at all
Please add an explanation on number 15 please :,) tysm if u help

Answers

the median of the numbers are 112. the median is the middle number sorted from least to greatest. and for the 2nd problem the mean will increase because it's basically the average of all the numbers. u add them up and then divide them by the amount of numbers there are.

evaluate 36 / x + 9 when x equals 3

Answers

Answer:

Step-by-step explanation:

Given equation:

36 ÷ x + 9

Given variables:

x = 3.

Solve:

36 ÷ x + 9= 36 ÷ 3 + 9= 36 ÷ 12= 3.

36/x+9 = 3

Multiply all terms by x and cancel:

36+9x=3x

9x+36=3x
(Simplify both sides of the equation)

9x+36−3x = 3x−3x

(Subtract 3x from both sides)

6x+36 = 0
6x+36−36 = 0−36

(Subtract 36 from both sides)

6x = −36

6x/6 = −36/6

(Divide both sides by 6)

x = −6

Check answers. (Plug them in to make sure they work.)

x = −6

(Works in original equation)

Answer: x = −6

help!! struggling in math!!!

Answers

Answer: 22 x 4 = f f=88

Step-by-step explanation:

Multiply 22 and 4 to get 88

F means 88 flowers

Answer:

Equation: 22 * 4.Answer: 88.

Step-by-step explanation:

She picked f flowers.

She got 4 vases, which had 22 flowers in each vase.

If so,

Here is what it is:

4 * 22 = f22 * 4 = 2 * 4 = 8= 20 * 2 = 80= 80 + 8= 88f = 88.

Equation:

22 * 4

Answer:

f = 88.

Help me pls I’ll give brainliest

Answers

Answer:

y=-2/3 -5

Step-by-step explanation:

the -2 is over the 3

Y=2/3-5 should be it

Part F
Find the circumference of the wheel using the formula you found in part E.
--
Activity
A vintage wheel needs to be banded with an iron strip. If the wheel’s radius is 11 inches, how long must the iron strip be to go all the way around the wheel? Complete the steps below to answer the question.

Answers

Answer:

Step-by-step explanation:

first lets find the circumference of the wheel:

[tex]C=\pi *d[/tex]

we have to find the diameter out of the radius:

[tex]d=r*2[/tex]

because the radius is half of the diameter, intrhis case i have to findf the diameter so i do multiply it with 2:

[tex]r=11\\d=??\\d=11*2\\d=22[/tex]

we found the diameter now we are going to find the circumference :

[tex]C=\pi *d\\C=\ 3.14*22\\C= 69.08[/tex]

Another way (easier)to find the circumference is:

[tex]C=2\pi *r\\C=2(3.14)*11\\C=69.08[/tex]

At the end it will hav ethe same answer.

Answer:

69.08 inches

Step-by-step explanation:

substitute the values of r (11 inches) and pi (3.14) in the formula c = 2πr to find c:

c = 2 × 3.14 × 11 inches

c = 69.08 inches.

the circumference of the wheel is about 69.08 inches.

Can you please help me

Answers

the little square means 90°, so 90°-35° is 55°

Answer:

x= 55

Step-by-step explanation:

Before we begin, the question tells us that angle JKL is a right angle. A right angle means the angle is 90 degrees. It tells us that one of the angle is 35 degrees and another is x. Since they make up a right angle, 35 plus x should equal to 90. To find x, subtract 35 from 90 and you get 55.

I WILL GIVE BRAINLIEST IF CORRECT

A running track in the shape of an oval is shown. The ends of the track form semicircles.

A running track is shown. The left and right edges of the track are identical curves. The top and bottom edges of the track are straight lines. The track has width 46 m and length of one straight edge 150 m.

What is the perimeter of the inside of the track?

(π = 3.14)

392.00 m

372.22 m

444.44 m

588.88 m

Answers

Answer:

438.36m

Step-by-step explanation:

Answer:

3000

Step-by-step explanation:

I'm learning this right now too!

500×6in=3000

7b - 15 = 5b - 3

5c + 16.5 = 13.5 + 10c

20 + 3y = 10 - 2y

17 + 4h + 2 = 1 - 5h

Answers

1. 7b-15=5b-3

move 5b and 15

7b - 5b = -3 + 15

2b=12

b=6

2. 5c + 16.5 = 13.5 + 10c

5c=3

c=3/5

3. 20 + 3y = 10 - 2y

-5y=10

y=-2

4. 17 + 4h + 2 = 1 - 5h

19 + 4h = 1 - 5h

-9h=18

h=-2

1. b=6
2. c=3/5
3. y=-2
4.h=2

Jack is a renting a boat to go fishing with his friends. One rental company charges a fee of $20 plus $13.50 an hour. A second rental company charges a fee of $6 plus $17 an hour.

a. Let x represent the number of hours the boat is rented and y represent the total cost of the rental. Write a system of equations to represent the problem situation.

b. Determine when the first rental company will be a better deal for Jack than the second rental company.

Answers

Answer:

The first rental deal will be better after 4 hours

(a) 34 is 85% of what number?
(b) What is 15% of 80?

Answers

Answer:

A. 40. B.12

Step-by-step explanation:

40/34=.85

80*.15=12

Answer:

Part A: 40
Part B: 12

Step-by-step explanation:

Given the following question:

Part A:
34 is 85% of what number?
[tex]\frac{85\times40}{100} =85\times40=3400\div100=34[/tex]
85% of 40 is 34.

Part B:
15% of 80
[tex]\frac{15\times80}{100} =15\times80=1200\div100=12[/tex]
15% of 80 is 12.

Hope this helps.

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