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3 years ago

HELP!!!!!! PLS DO IT IN ORDER!!!!

Mathematics

1 answer:

ryzh [129]3 years ago

7 0

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Find the volume of a sphere with a radius of 9 inches. Use 3.14 for π. Round your answer to the nearest tenth..

azamat

Answer: 3053.6 in^3

To find the volume of a sphere, you first must identify the formula: (4/3)pi(r)^3

You’re given the radius 9 inches
And you’re also given the pi approximation 3.14.

With that in mind, we can plug those variables in the formula to get:
(4/3)(3.14)(9in)^3 = 3053.63 in^3

And rounded to the tenths place:
3053.6 in^3

7 0

2 years ago

Sixteen more than a number is 48 which equation models this sentence

nevsk [136]

The word 'more' means addition.
So C. n + 16 = 48

3 0

2 years ago

Solve the following system of equations. 2x+y=3 I= 2y - 1 x= y=

marin [14]

Note: I am assuming your second equation is:

x = 2y - 1

Answer:

The solution to the system of equations is:

x = 1

y = 1

Step-by-step explanation:

Given the system of equations

2x+y=3

x = 2y - 1

solving the system of equations using the elimination method

$\begin{bmatrix}2x+y=3\\ x=2y-1\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}2x+y=3\\ x-2y=-1\end{bmatrix}$

Multiply x-2y=-1 by2: 2x-4y=-2

$\begin{bmatrix}2x+y=3\\ 2x-4y=-2\end{bmatrix}$

subtracting the equations

$2x-4y=-2$

$-$

$\underline{2x+y=3}$

$-5y=-5$

now solve -5y = -5 for y

$-5y=-5$

Divide both sides by -5

$\frac{-5y}{-5}=\frac{-5}{-5}$

Simplify

$y=1$

For 2x+y=3 plug in y=1

$2x+1=3$

subtract 1 from both sides

$2x+1-1=3-1$

Simplify

$2x=2$

Divide both sides by 2

$\frac{2x}{2}=\frac{2}{2}$

Simplify

$x=1$

Therefore, the solution to the system of equations is:

x = 1

y = 1

8 0

2 years ago

Which square root is NOT a whole number?

VladimirAG [237]

$1)\\a.\ \sqrt{144}=12\in\mathbb{Z}\\b.\ \sqrt{156}\notin\mathbb{Z}\\c.\ \sqrt{169}=13\in\mathbb{Z}\\d.\ \sqrt{1962}\notin\mathbb{Z}\\\\2)\\x^3=216\to x=\sqrt[3]{216}\to x=6\to a.\\\\3)\\\sqrt[3]{216}=6\to b.\\\\4)\\x^2=10\to x=\pm\sqrt{10}\\\\5)\\x^3=27\to x=\sqrt[3]{27}\to x=3\to a.$

3 0

2 years ago

Which of the following best summarizes how to solve for the variable x in the equation below, and which rule was used to do so?

liq [111]

Answer:x is not better than the letter z because it has less points in the letter line.

Step-by-step explanation:

8 0

2 years ago