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2 years ago

Solve for x.

1 answer:

3 0

Hey there.. Lets solve this problem step by step

Given problem --> 5x² - 45 = 0

Step 1 - adding both sides by 45
5x² - 45 + 45 = 0 + 45
5x² = 45

Step 2 - dividing both sides by 5
$\frac{5}{5} x^2 = \frac{45}{5}$
x² = 9

Step 3 - taking square root on both sides to find the value of x
√x² = √9
x = 3 and -3

So correct option is D.

Hope this helps you.. :)

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Answer:

Option A.

Step-by-step explanation:

Area of a square is

$A=x^2$ .... (1)

where, x is side length.

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It is given that bob currently owns 250,000 square feet of land.

Fist find the length of each side.

$A=250000$

$x^2=250000$

Taking square root on both sides.

$x=500$

Differentiate with respect to t.

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Substitute x=500 and $\frac{dx}{dt}=2$ in the above equation.

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Therefore, the correct option is A.

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2 years ago

Factor 3x^3+6x^2+x+2 by grouping

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The answer for this question when grouping:

(x+2)(3x^2+1)

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2 years ago

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Answer:

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Step-by-step explanation:

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Answer:

20.65 points.

Step-by-step explanation:

We have been given that a star athlete at a local college scored 640 points during the 31 basketball games. We are asked to find the average number of points she scored per game.

To find the average number of points scored per game by player we will divide total number scored by the total number of games.

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