Y= 7x − 8
y = 5x − 2

part a: explain how you will solve the pair of equations by substitution or elimination. show all the steps and write the solution.

part b: if the two equations are graphed, at what point will the lines representing the two equations intersect? explain your answer.

Part A

Using substitution method, which means that substitute the value of y from first equation into the second equation, i.e.

7x – 8 = 5x – 2

This implies that;

2x = 6

x = 3

Now putting x = 3 in any equation, because both the equation will give the same value of y,

y = 5(3) – 2

y = 13

or

y = 7(3) – 8

y = 13

Part B

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet