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3 years ago

Solve for X 4X-(9-3X)=8X-1

1 answer:

7 0

4x - (9 - 3x) = 8x - 1

4x - (9) - -(3x) = 8x - 1

4x - 9 + 3x = 8x - 1

7x - 9 = 8x - 1 (-8x from each side)

-x - 9 = -1 (+9 to each)

-x = 8 (divide -1 from each side)

x = -8

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A water sprinkler covers a circular area with a diameter of 20 feet. If it is set to cover only an arc measuring 120 degrees, wh

Wewaii [24]

Answer:

The sprinkler will cover 104.66 square feet

Explanation:

A water sprinkler covers a circular area with a diameter D= 20 feet

and radius r = 10 feet

Arc measuring degrees = 120 degree

Area of the Arc = $\frac{120}{360} \times \pi \times r^2$

= $\frac{1}{3} \times \pi \times 10^2$

= $\frac{1}{3} \times 3.14 \times 10 \times 10$

= 104.66

The sprinkler will cover an arc area covering 104.66 square feet

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3 years ago

When solving the equation 4(3x^2 +2)-9=8x^2+7. Emily wrote 4(3x + 2)=8x^2 + 16 as her first step. Which property justifies Emily

vfiekz [6]

Hello :
4(3x² +2)-9=8x²+7 = 4(3x^2 +2)-9 +9 =8x²+7 +9
= 4(3x² + 2)=8x² + 16
(State a reason why1) Addition Property of Equality)

6 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! What is (f/g)(x) ?

Rudiy27

Answer: $\bold{D.\ \dfrac{x+4}{x}\ where\ x \neq 0, \dfrac{2}{3}}$

Step-by-step explanation:

f(x) = 3x² + 10x - 8

g(x) = 3x² - 2x

$\dfrac{f(x)}{g(x)}=\dfrac{3x^2+10x-8}{3x^2-2x}=\dfrac{(3x-2)(x+4)}{x(3x-2)}=\dfrac{x+4}{x}$

Restriction on x: the denominator cannot be equal to zero. So,

x(3x - 2) ≠ 0

→ x ≠ 0 and 3x - 2 ≠ 0

3x ≠ 2

x $\neq \dfrac{2}{3}$

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3 years ago

The volume of a cylinder is 4x3 cubic units and its height is x units.

Anastasy [175]

Answer:

The answer to your question is r = 2x

Step-by-step explanation:

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r = radius

h = height = x

Volume = 4x³

Then

r² = $\frac{volume}{\pi h}$

r² = $\frac{4x^{3} }{\pi x}$

r² = 4x²

r = 2x

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3 years ago

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Readme [11.4K]

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