MATHEMATICS MIDDLE SCHOOL

PLEASE HELP!! QUICKKK!Mark proofread 15 pages in 2 hours for $40

What Is her proofreading rate in pages per hour?

how much does she receive on average for a page?

Answers

Answer 1
Answer: a. If he reads 15 in 2 hours, then divide 15 by 2 to see how much he reads in one. 15/2 = 7.5

b. If she receives $40 for 15 pages, divide 40 by 15.
40 / 15 = abt $2.67

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Which set of numbers could represent the lengths of sides of a right triangle? A) 7, 9, 11 B) 10, 15, 20 C) 12, 18, 22 D) 8, 15, 17

Answers

Hello from MrBillDoesMath!


Answer:  D

In a right (angle) triangle with sides a,b, c, the Pythagorean that gives us that

a^2 + b^2 = c^2. Let go through the 4 cases presented in the problem>


A)    Does 7^2 + 9^2 = 11 ^2. That is, does  49 + 81 = 121 ? Nope so these sides do not form a right triangle.


B) Does 10^2 + 15^2 = 20^2. That is, does 100 + 225 = 400 ? Nope so these sides do not form a right triangle


C) Does 12^2 + 18^2 = 22^2. That is, does 144 + 324 = 484 ? Nope, so these sides do not form a right triangle.


D) Does 8^2 + 15^2 = 17^2 ? That is, does 64 + 225  = 289. YES, so these sides can form a right triangle.


Regards, MrB.

How do you write 43,080,700 in expanded form?

Answers

40,000,000+3,000,000+80,000+700
40,000,000+3,000,000+80,000+700

A souvenir postcard is 5 1/4 inches long and 31/2 inches wide what is the area of the postcard

Answers

                                                                                                                                                                                                                                                                       81 1/8

Is the answer

A window washer uses the proportional relationship y = kx to determine how long (y) it will take him to wash any number of windows (x). It takes the window washer 8 hours to wash 250 windows. What is the value of kA) k = 242
B) k = 258
C) k = 0.032
D) k = 31.25

Answers

C.

By plugging in the numbers into the equation, 8 = 250(k), we can determine that 8 ÷ 250 = 0.032.

Please help me with these problems, I am completely stumped : /

Answers

x² - d = (x + 9) (x + c)
c and d are integers.

Integers are whole numbers found in the number line. These can be positive integers or negative integers.

x² - d ⇒ this means that there is no middle term. The sum of the middle term is 0.

(x + 9)(x - 9) = x(x - 9) + 9(x - 9) = x² - 9x + 9x - 81 = x² - 81

c = -9
d = 81

x² + Mx + 18 = (x + g)(x + h)

if M = -11
x² - 11m + 18 ⇒ (x-9)(x-2) ⇒ x(x-2) -9(x-2) 
x² - 2x - 9x + 18 ⇒ x² - 11x + 18

if M = 7
x² + 7m + 18 ⇒ (x + 9)(x-2) ⇒ x(x-2) + 9(x-2) 
x² - 2x + 9x - 18 ⇒ x² + 7x - 18

Only Pat is correct.
M = -11
g = 9
h = 2

rachel uses grid paper to plan a mural to paint at her school. the design will be made of two connected rectangles. the larger rectangle will have an area between 35 square feet and 45 square feet. the smaller rectanglewill have an area between 10 square feet and 20 square feet. Draw and label a diagram to show what Rachel could plan. Explain how to find the total area.

Answers

The picture attached has two rectangles drawn side by side. The larger one has an area of 40 square feet (8 x 5), and the smaller one has an area of 10 ft.² (2 x 5).

To find the total area, you add these areas together. In math when you put two things together like in the picture, this is showing addition.

The total area represented is 50 ft.².

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