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sergey [27]
2 years ago
8

Which of the following expressions is equivalent to (–7)5? A. –7 • –7 • –7 • –7 • –7 B. –7 • 5 C. (–7) • 7 • (–7) • 7 • –7 D. 5

• 5 • 5 • 5 • 5 • 5 • 5
Mathematics
2 answers:
abruzzese [7]2 years ago
4 0

Answer:A. B. D.

Step-by-step explanation:

Vika [28.1K]2 years ago
4 0

Answer:

\huge\boxed{\sf Option \ A\ and \ C}

Step-by-step explanation:

\sf (-7)^5

The power (5) tells how many times we have to multiply the number (-7) with itself.

<u>So, it becomes:</u>

\sf (-7)*(-7)*(-7)*(-7)*(-7)

Hope this helped!

~AnonymousHelper1807

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An amusement park charges a $15 entrance free plus $3.25 for each ride. Part A: Write an equation that represents the situation.
IceJOKER [234]

Answer:

Look below

Step-by-step explanation:

Part A: Equation would be in the y=mx+b format. m, or the slope, would be the cost that varies depending on the number of things that happen so m=3.25. b would be the fix cost so it is 15 so the equation ends up being y=$3.25x + $15.

Part B: Initial value is 15 since it is the fix cost, and 3.25 is the rate of change since it added as the number of rides increase.

Part 3: To solve this you substitute 7 into x so y=$3.25(7) + $15 = $37.75

I hope this explains it well.

7 0
3 years ago
The roof of a barn rises vertically 2.5 meters through the horizontal distance of 10 meters. What is the pitch (slope) of the ro
Lesechka [4]

Answer:

The pitch (slope) of the roof is 0.25  or 25\%

Step-by-step explanation:

we know that

The formula to calculate the slope  is equal to

m=\frac{y2-y1}{x2-x1}

where

In this problem we have

{y2-y1}=2.5\ m  -----> is the vertical distance (rises)

{x2-x1}=10\ m   -----> is the horizontal distance (run)

substitute the values

m=\frac{2.5}{10}=0.25

convert to percentage form

0.25*100=25\%

6 0
3 years ago
Find the value of the test statistic z using z=^p−p√pq/n.
Anna007 [38]

Answer:

Option C - 4.71

Step-by-step explanation:

We are given the Test statistic for proportion as;

z = (^p − p)/√pq/n

From the question;

^p = 0.15

p = 0.1

q = 1 - 0.1 = 0.9

n = 800

z = (0.15 - 0.1)/√(0.1 × 0.9/800)

z = 0.05/√(0.09/800)

z = 4.71

7 0
3 years ago
(multiple choice) plz help me!!
harkovskaia [24]

8 \sqrt{5} is \: the \: length

Step-by-step explanation:

( {16})^{2}  = ( {x})^{2}  - ( {8})^{2}  \\ 256 =  {x}^{2}  - 64 \\ 256 + 64 =  {x}^{2}  \\    \sqrt{320}  =  \sqrt{ {x}^{2} }  \\ 8 \sqrt{5}  = x

7 0
3 years ago
576 is what percent of 800?
aleksley [76]
72 percent.
Divide 576 into 800 to get 72%
8 0
3 years ago
Read 2 more answers
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