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Rufina [12.5K]
3 years ago
9

5x+3 (x-2)=90please tell me the answer

Mathematics
1 answer:
Yuliya22 [10]3 years ago
3 0
5x+3(x-2)=90
5x+3x-6=90
8x-6=90
+6 +6
8x=96
\8 \8
X=12
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Need help with these two questions no work needed just he answer thank you
ss7ja [257]

Answer:

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3 years ago
(20 points and brainlest to whoever answers correctly!!!)
Stells [14]

Answer:

y = -2/3x - 11

Step-by-step explanation:

Steps to find the perpendicular bisector:

1) Find the midpoint of line PQ

Midpoint formula: (\frac{x_{1} + x_{2} }{2} \\, \frac{y_{1} + y_{2}}{2})

Midpoint of line PQ = (6, -2)

2) Find the slope of line PQ

Slope formula: \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

Slope of line PQ = 3/2

3) Find the negative reciprocal of the slope of PQ

To find the negative reciprocal just swap the numerator and denominator and add a negative sign. If it is already negative it will become positive.

In this case it will be -2/3

4) Write the equation of line PQ in slop-intercept form.

Slope-intercept form: y = mx + b

This is what it will look like for line PQ: y = \frac{3}{2}x + b

5) Plug the points of the midpoint into the line and solve for the intercept (b)

This is what it will look like: -2 = \frac{3}{2}(6) + b

-2 = 18/2 + b

-2 = 9 + b

-11 = b

6) Write the equation of the perpendicular bisector

m = the negative reciprocal of the slope of PQ = -2/3

This is what the equation will look like: y = -2/3x - 11

Hope this helped! Please give Brainliest!

5 0
3 years ago
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nikitadnepr [17]

Answer:

They are moving 2 m/s

Step-by-step explanation:

the answer is in the format m/s or meters per second. so in this case, just divide the seconds by the meters

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Step-by-step explanation:

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5y=22 -2

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2.Divide by 5 on each side. That gets 4.

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5 0
3 years ago
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max is making a rectangular garden that is 5 feet less than twice its width. If the perimeter of the garden is 80 feet, what wil
djverab [1.8K]
L=2w-5

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7 0
3 years ago
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