so, we know that a triangle is 180 degrees. since we know that one angle is 80 degrees, we can subtract that from the equation. now, we are trying to find what X is so that we can find the angle. here is how i did it:

i rewrote it and removed the parentheses.

4x + 1 + 4x + 19 = 100

then, i collected like terms and calculated it.

8x + 20 = 100

then, i moved the constant to the right.

8x = 100 - 20

then, i simply calculated it.

8x = 10

solution: x = 10

so, we just insert X into the angle for A. that gets us 4(10) + 1 = angle A

40 + 1 = angle A, hence angle A = 41 degrees.

7 0

3 years ago

A fabric store sells close-out fabrics for $2.14 a yard. A customer buys 8 yards of fabric. How much does the customer pay for t

blsea [12.9K]

Answer:

$17.12

Step-by-step explanation:

2.14 · 8 = 17.12

8 0

3 years ago

. If 1: x is equivalent to 64 : 25, find x

alexandr1967 [171]

Answer:

x=25/64

Step-by-step explanation:

by simple substitution

7 0

3 years ago

What is the image of the photo and the preimage?

Anna [14]

Answer:

a shape with 4 sides

Step-by-step explanation:

duh

7 0

3 years ago