Answer:
d. 24
Step-by-step explanation:
m∠10 ≅ m∠12 cause they're alternate exterior angles and im taking geometry rn:)
m∠10 = 3x - 2
m∠12 = 70
3x - 2 = 70
3x = 72
x = 24
STU + STR = 180
8x + STR = 180 [ STU = 8x ]
STR = 180 - 8x
STR = SRT [ RS ≈ ST ]
Now, In ΔSRT,
we have, RST = 7x - 54, STR = SRT = 180-8x
Their sum is 180, as it constitutes a triangle.
7x-54 + 2(180-8x) = 180
7x - 54 + 360 - 16x = 180
306 - 9x = 180
9x = 306 - 180
9x = 306 - 180
x = 126/9
x = 14
So, option A is your answer.
Hope this helps!
Answer:
6.42$
Step-by-step explanation:
6.00 divided by 100 equals 0.6 multiplied by 7 equals 0.42 so the sales tax is 0.42 cents and the total is 6.42$
Replace x with 3 and solve for y to equal 12:
y = 4(3) = 12
the answer is y = 4x