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liraira [26]
3 years ago
12

-8x + 5 ( 1 + x ) = 2x - 20 , solve step by step, and explain each step !!! please !

Mathematics
1 answer:
Anna11 [10]3 years ago
8 0
The answer to the question

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Please help thank you and show all work.
Daniel [21]
Question 1:

Look at the first attached image.

We want to solve for the height of the smaller building. Let's start by making a right triangle with angle of 15 degrees and adjacent side of 51 m.

Let's solve for the other leg. Multiply the tangent with 51 m to get the length of the other leg.

51*tan(15)
\approx 14

Now, subtract that from 207 to get the height of the smaller building.

207-14=193

That's your answer.

Question 2:

The angle of elevation is congruent to the angle of depression because they are alternate interior angles.

Thus, you can choose the 1st and 4th choices as your answer.

Question 3:

Look at the second attached image.

Angle E is congruent to angle D for the same reasons mentioned in the last question.
We can create an equation.

3x+1=2(x+8)

Distributive property

3x+1=2x+16

Subtract both sides by 1 and 2x

x=15

Since E and D are congruent, just plug this value into one of the equations for E or D. You get 46.

The third choice is your answer. Hope this helps! :)

6 0
3 years ago
PLEASE HELP!! 50 POINTS!!!!!
OLEGan [10]

Answer:

3\2 is the marked

y cos x,=2

3\2=0.5

x=0.5*2=3.0

=3.0*2=6.0

6 0
2 years ago
If a/b=p/q, then (a+b)/b=
a_sh-v [17]

Answer:

Step-by-step explanation:

\frac{a+b}{b}=\frac{a}{b}+\frac{b}{b}\\\\=\frac{a}{b}+1\\\\=\frac{p}{q}+1

4 0
3 years ago
Humans breathe about 15 breaths in a minute. The average
NeX [460]

Answer:

Humans breathe about 300 liters of air in 25 minutes

7 0
2 years ago
Which numbers are equivalent to 3/10
Sedbober [7]

Answer:

Multiply numerator and denominator with same number to gwt the answers . There are infinitely many numbers

3/10 × 2/2 = 6/20

3/10 × 5/5 = 15/50

3/10 × 10/10 = 30/100

And so on

8 0
3 years ago
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