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3 years ago

What is the value of x, when the expression 3x+6 equals the expression -15+6x?

Mathematics

1 answer:

Agata [3.3K]3 years ago

3 0

Answer:

x = 7

Step-by-step explanation:

I hope this helps.

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Please help first correct will get brianliest. Find the value of x that makes DEF XYZ

erica [24]

Answer:

x = 7

Step-by-step explanation:

The larger triangle is twice as big as the smaller triangle. Therefore, the length of the side EF is twice as large as the side YZ.

I multiplied 4.5 (the length of YZ) and 2 to get 9. The value of side EF is 3x-12 and should be equivalent to 9.

3x - 12 = 9

I solved this equation by adding 12 to both sides and dividing 3 on both sides.

The value of x is 7.

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3 years ago

I need help fast will give brainliest!!!

kompoz [17]

Answer:B. Able Cable

Step-by-step explanation:

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3 years ago

1. The structure of the supports for the hill consists of steel beams that

Darina [25.2K]

a) Parallel for both line segments have the same slope = -5/4

b) 55º

Step-by-step explanation:

a) To verify the parallelism of these line segments, It's necessary to find the slope of each one. Parallel lines share the same slope value:

$m_{BC}=\frac{0-150}{120-0}=-\frac{-5}{4}\\m_{AD}=\frac{0-125}{100-0}=-\frac{5}{4}$

b) If ∠DAB = 125°, what is the measure of ∠CBA? Justify your reasoning.

Those beams do not form a parallelogram because:

Using the formula of distance between those points

$d=\sqrt{(y_{2}-y_1)^{2}-(x_{2}-x_{1})^2$

$\overline {AB}=25\: \: \: \overline{CD}=20\: \: \overline{AD}=160 \: \: \overline{BC}=192$

So this is a trapezoid. And two adjacent angles within a trapezoid are supplementary, so If ∠DAB = 125º then 180 - ∠CBA=55º

3 0

3 years ago

-3+4u=-31 solve for u

solniwko [45]

Answer:

u = -7

Step-by-step explanation:

-3+4u=-31

Add 3 to each side

-3+3 +4u = -31+3

4u = -28

Divide each side by 4

4u/4 = -28/4

u = -7

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3 years ago

A scuba diver at a depth of -12ft(12 ft below sea level),dives down to a coral reef that is 3.5 times the divers original depth.

svet-max [94.6K]

-42ft below sea level

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4 years ago