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3 years ago

What is the volume of a rubber ball that has a radius of 1.7 cm

Mathematics

2 answers:

tino4ka555 [31]3 years ago

5 0

I believe the volume of one rubber ball is 20.58780

Genrish500 [490]3 years ago

5 0

Answer:

20.59 cubic centimeters

Step-by-step explanation:

For a rubber ball

radius (r) = 1.7 cm

Volume of a Sphere

= 4/3 * π * r^3

= 4/3 * 22/7 * 1.7 * 1.7 * 1.7 cm

= 20.59 cm^3

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Find negative x when x is negative seven

Free_Kalibri [48]

Thus, we multiply the numbers together as we normally would, and then put a negative sign in front of our answer. So, 4 x -3 = -12. Please note that this also works when the negativenumber comes first and the positive number is second. For example, you may see it written -3 x 4, but don't get confused

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2 years ago

Simplify the square root of 7+2 So 7+2 is inside the quare root

serious [3.7K]

Answer:

Step-by-step explanation:

$\sqrt{7+2}=\sqrt{9}=\sqrt{3^2}=\boxed{3}$

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3 years ago

Which expression is equivalent to log_5(x/4)^2?

viktelen [127]

For this case we must find an expression equivalent to:

$log_ {5} (\frac {x} {4}) ^ 2$

So:

We expanded $log_ {5} ((\frac {x} {4}) ^ 2)$ by moving 2 out of the logarithm:

$2log_ {5} (\frac {x} {4})$

By definition of logarithm properties we have to:

The logarithm of a product is equal to the sum of the logarithms of each factor:

$log (xy) = log (x) + log (y)$

The logarithm of a division is equal to the difference of logarithms of the numerator and denominator.

$log (\frac {x} {y}) = log (x) -log (y)$

Then, rewriting the expression:

$2 (log_ {5} (x) -log_ {5} (4))$

We apply distributive property:

$2log_ {5} (x) -2log_ {5} (4)$

Answer:

An equivalent expression is:

$2log_ {5} (x) -2log_ {5} (4)$

3 0

3 years ago

A bag of marbles contains 28 red marbles, 30 green marbles, and 24 yellow marbles. What is the ratio of red marbles to yellow ma

Basile [38]

Answer:

The answer to your question is 7:6

Step-by-step explanation:

Data

Number of red marbles = 28

Number of green marbles = 30

Number of yellow marbles = 24

Radio = ?

Process

1.- Write the ratio

Red marbles : Yellow marbles

2.- Substitution

28 : 24

3.- Simplification

-Divide both terms by 2

14 : 12

-Divide by two both terms

7 : 6

-It is not possible to simplify more.

4 0

2 years ago

Read 2 more answers

Kyle spend 1/5 of his money on clothing. He had 120 remaining. What was the cost of the clothes Kyle bought

dolphi86 [110]

Answer:

30 is the cost of clothes Kyle bought.

Step-by-step explanation:

Given: Kyle spend 1/5 of his money on clothing.

Remaining money is 120.

Lets assume the total money Kyle had be "x".

∴ Money spent on clothes = $\frac{1}{5}\times x= \frac{x}{5}$

Now, putting up value in the equation to find the total amount of money.

We know, money remaining is 120

$x-\frac{x}{5} = 120$

Taking LCD subtract the fraction.

⇒ $\frac{(x\times 5)- x\times 1}{5} = 120$

⇒ $\frac{5x-x}{5} = 120$

⇒ $\frac{4x}{5} = 120$

Multiplying 5 both side

⇒ $4x= 120\times 5$

dividing 4 on both side.

∴ $x= \frac{120\times 5}{4}$

∴ x= 150

Kyle has total 150 money to spend.

Kyle spent $\frac{1}{5}$ of his total money on clothing.

⇒ cost of clothes kyle bought= $\frac{1}{5} \times 150= 30$

Hence, Kyle spent 30, which was the cost of clothes kyle bought.

6 0

3 years ago