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2 years ago

What is the solution to this equation? 9x - 4(x - 2) = x + 20

Mathematics

1 answer:

ioda2 years ago

7 0

9x - 4(x - 2) =x + 20

We move all terms to the left:

9x -4(x - 2) - (x + 20) = 0

Multiply

9x - 4x -(x + 20) + 8 = 0

We get rid of the parentheses.

9x - 4x - x - 20 + 8 = 0

We add all the numbers and all the variables.

4x - 12 = 0

We move all terms containing x to the left hand side, all other terms to the right hand side

4x=12
x = 12/4
x = 3

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The velocity V of an object dropped from a tall building is given by V = V64d, where dis

ozzi

Answer:

d = 0.0625 m

Step-by-step explanation:

The velocity of an object dropped from a tall building is given by :

$v=\sqrt{64d}$

Where

d is the distance in feet

We need to find the distance when the velocity is 32 ft/s

Rearranging for d,

$v^2=64d\\\\d=\dfrac{64}{v^2}$

Put v = 32 ft/s

$d=\dfrac{64}{32^2}\\\\d=0.0625\ m$

So, the required distance is 0.0625 m.

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3 years ago

Two numbers have the same digit in the millions period, the same digits in the thousands period, and the same digits in the ones

kompoz [17]

No. the tenths may not be the same

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3 years ago

In a video game, Val scored 30%, percent fewer points than Peeta. Peeta scored 1060 points.

katen-ka-za [31]

Answer:

742

Step-by-step explanation:

Divide 1060 by 10 to get 106. This is 10% of his score.

100-30 is 70, so Val scored 70% of Peeta’s points.

Multiply 106 by 7 find 70%

Val scored 742 points

7 0

3 years ago

Which of the following is not a property of a rhombus? Question 20 options: A) Diagonals are congruent. B) Opposite angles are c

insens350 [35]

Answer: A

Step-by-step explanation:

This is because diagonals of a rhombus are perpendicular not congruent, ]

Pependicular means at an angle of 90°

If this helped please mark brainliest

5 0

3 years ago

PLEASE Help! <br><br> How much larger is 3 to the 5th power than 5 to the 3rd power?

grandymaker [24]

Well 3 to the 5th power is 243 and 5 to the 3rd power is 125 and 243-125 is 118

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4 years ago