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baherus [9]
3 years ago
13

Question 4 of 9 (7 + 1) + 8 = 7+ (1 + 8) A. True B. False

Mathematics
2 answers:
stiv31 [10]3 years ago
8 0

Answer:

trueeeeeeeeeeeeeeeeeeeeee

IgorC [24]3 years ago
6 0

Answer:

A true

Step-by-step explanation:

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andrey2020 [161]

Answer:

21.25

Step-by-step explanation:

diagonal is 21.25

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2 years ago
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3 years ago
If the if a cylinder is 7 in tall and has a volume of 63 Pi inches what is the area of the cross section it goes right down the
vitfil [10]

Answer: 9\pi \ in.^2

Step-by-step explanation:

Given

The height of the cylinder is h=7\ in.

The volume of the cylinder is V=63\pi \ in.^3

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\Rightarrow V=\pi r^2h\\

Insert the values

\Rightarrow 63\pi =A\times 7\\\\\Rightarrow A=\dfrac{63\pi}{7}\\\\\Rightarrow A=9\pi\ in.^2

Thus, the area of the cross-section is 9\pi \ in.^2

7 0
2 years ago
Mark is 7 years older than his brother, who is y years old. Which expression correctly represents Mark's age?
Alex787 [66]

7 + Y = X (x= His unknown age)



3 0
3 years ago
Which of the sets of three dimensions could make a right triangle ​
hodyreva [135]

Answer:

B) 6, 8, 10

Step-by-step explanation:

All right triangles will follow the following theorem (Pythagorean theorem):

a^2+b^2=c^2, where a and b are two legs of the triangle and c is the hypotenuse. Out of all answer choices, only B) 6, 8, 10 follow this theorem.

4 0
2 years ago
Read 2 more answers
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