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3 years ago

3х – 4 + 20 = 55 What is the answer to this

2 answers:

5 0

So you first do -4+20=16 then you subtract 16,from 55 and get it out of your equation what you have left is 3x=39 then you simplify that by dividing both sides by 3 and your answer is 13

Ghella [55]3 years ago

4 0

Answer:

x = 13

Step-by-step explanation:

3х – 4 + 20 = 55

3x (-4 + 20) = 55

3x + 16 = 55

Subtract 16 from both sides

3x = 39

Divide by 3 on both sides

x = 13

Hope this helps :)

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Y=3x+6; (4,7) find the parallel line

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The graph in below

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3 years ago

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4 years ago

Find an equation of the tangent line to the curve at the given point. y = 3x3 - x2 + 2, (1, 4)

ICE Princess25 [194]

y = 7x - 3

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$\frac{d}{dx}$ (a $x^{n}$ ) = na $x^{n-1}$

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3 years ago

Consider the line segment below that is five feet long. Is Q the midpoint of PR? Justify your answer.

givi [52]

Answer:

Q is not the midpoint of PR

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

If Q is the midpoint of PR

then

PQ=QR

substitute the given values and solve for x

$15x-2=5x+3\\15x-5x=3+2\\10x=5\\x=0.5$

Remember that

$PR=5\ ft$ ----> given problem

$PR=PQ+QR\\PR=(15x-2)+(5x+3)$

substitute the value of x

$PR=(15(0.5)-2)+(5(0.5)+3)$

$PR=(5.5)+(5.5)$

$PR=11\ ft$

Compare with the given value of PR

$5\ ft\neq 11\ ft$

therefore

Q is not the midpoint of PR

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3 years ago

Solve for x: 3 - 2x = -7 A. 2 B. -5 C. 5 D. -2

kipiarov [429]

Answer is a. 2
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x = 2

6 0

3 years ago