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mart [117]
3 years ago
13

I can't figure out this answer, can someone help?

Mathematics
1 answer:
raketka [301]3 years ago
8 0
To solve this problem, we need to know that the adjacent interior angles (2 and 5,  or 3 and 4) between two parallel lines are supplementary.
This means that ∠2+∠5 = 180 °

which means 
x+50 + 4x+30 = 180
collect similar terms and solve
5x + 80 = 180
5x = 180-80 = 100
x=20 °

∠2 = x+50 = 20+50 = 70 °

But ∠ 1 = ∠ 2  (vertical angles)
therefore
∠ 1 = 70 °

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3 times the sum of y and 9 <br><br> in algebraic expression please help me out!!
Ray Of Light [21]

3(y+9)

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3 0
3 years ago
If abx - 5 = 0, what is x in terms of a and b?
Harlamova29_29 [7]
Here we want to have x on one side of equation so,
we put number 5 on right side of equation:
abx=5
then we divide both sides by ab to obtain x on left side:
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x=<u />\frac{5}{ab}
6 0
3 years ago
Read 2 more answers
Find the complete factored form of the polynomial -24a6b4-40a3
Naddik [55]

For this case we have the following polynomial:

-24a ^ 6b ^ 4-40a ^ 3

We must find the greatest common factor of the terms of the polynomial.

The GCF of the coefficients is given by:

24 = 3 * 8\\40 = 5 * 8

Then we look for the GFC of the variables:

We have then:

a ^ 6 = a ^ 3a ^ 3\\a ^ 3 = a ^ 3

Finally rewriting we have: -24a ^ 6b ^ 4-40a ^ 3 = -8a ^ 3 (3a ^ 3b ^ 4 + 5)

Answer:

the complete factored form of the polynomial is:

-8a ^ 3 (3a ^ 3b ^ 4 + 5)

8 0
3 years ago
The bear lake is 24 miles long. Suppose John starts cycling art one end at 20 m.p.h. and Ramona starts at the other end at 15 m.
Fed [463]

Answer:

24/35 hours  or 0.69 hours

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x-----> distance traveled by John

(24-x) ----> distance traveled by Ramona

The time is equal to divide the distance by the speed

so

x/20=(24-x)/15

15x=20(24-x)

15x=480-20x

15x+20x=480

35x=480

x=480/35 miles

the time is equal to

t=x/20

t=480/(20*35)=24/35=0.69 hours

8 0
3 years ago
Whats the answer to 8.4 + 0.18x = 0.32x
Sveta_85 [38]

Step-by-step explanation:

0.32x - 0.18x = 8.4 \\ 0.14x = 8.4 \\ x =  \frac{8.4}{0.14}  \\ x = 60

3 0
2 years ago
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