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3 years ago

When people say 8:15 times 195 equals 15x, what does 15x mean or stand for

Mathematics

1 answer:

wel3 years ago

3 0

It means that 15 times another number equals to your equation.

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Surface area please help

Murrr4er [49]

Answer:

238

Step-by-step explanation:

First, you have to figure out the area for each of the boxes, and then you add all of the areas together

6 0

2 years ago

Which of these numbers are perfect squares or perfect cubes? Select the THREE answers that apply. 8 16 32/ 64 128 6 Omestian 12

Murljashka [212]

Answer:

8, 16, 64

Step-by-step explanation:

8 = 2^3 . . . a perfect cube

16 = 4^2 . . . a perfect square

32 = 2^5 . . . neither a cube nor a square

64 = 2^6 = 4^3 = 8^2 . . . both a perfect cube and a perfect square

128 = 2^7 . . . neither a cube nor a square

8 0

3 years ago

An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 4 ft long with a diameter of 2.2 ft. S

gavmur [86]

Answer:

$8\:\mathrm{minutes}$

Step-by-step explanation:

The volume of a cylinder is given as:

$r^2\cdot\pi\cdot h$

Since the diameter is $2.2$ , the radius is $\frac{2.2}{2}=1.1$ .

Therefore, the volume of this cylinder is:

$1.1^2\cdot 3.14\cdot 4=15.1976\:\mathrm{ft^3}$ , using $\pi=3.14$ as requested in the problem.

Since the tank is emptied at a constant rate of $1.5\:\mathrm{ft^3\:per\:minute}$ , it will take

$\frac{15.1976}{1.5}=7.5988=\fbox{$8\:\mathrm{minutes}$}$ to empty the tank.

8 0

3 years ago

Guys, help me out, please.

goldfiish [28.3K]

Answer:

Step-by-step explanation:

Given

$\frac{28}{3+4}$ ← evaluate the denominator

= $\frac{28}{7}$ ← perform the division

= 4

7 0

3 years ago

Can someone please help me on these two questions.

Valentin [98]

What are the questions

5 0

3 years ago