Answer:
x=26
Step-by-step explanation:
exterior angles theorem meaning they're equal to each other.
5x+7=8x-71
add 71 to 7
5x+78=8x
subtract 5x from 8x
78=3x
divide 78 and 3
x=26
to check your work plug 26 into each equation:
5(26)+7= 137°
8(26)-71= 137°
because they're the same you know that x must equal 26
hope this helps!❤
3.142×40^2×150=753,982.237
if1sec =0.2litres
what about 753.982=
753.982×1/0.2
=22.80
That is a fraction, if you want to put it into decimal form, it would be equivalent to 0.7