Answer:
C
Step-by-step explanation:
Complementary means that the angles have a sum of 90° so we can write:
m∠A + m∠B = 90° → 3x + 2 + 8x = 90
11x + 2 = 90
11x = 88
x = 8 which means that m∠B = 8x = 8 * 8 = 64°.
Supplementary means that the angles have a sum of 180° so m∠C = 180° - m∠B = 180° - 64° = 116°.
Answer:
78=80
42=40
40 x 80= 3200
Step-by-step explanation:
anything above 5 rounds up and anything below 5 rounds down
78 is above 75 so its 80
42 is below 45 so its 40
Answer:
that is an unusual question...
there is no table present... I will assume a 10x10 addition table
6. up one row subtracts 10 right one column adds one... so
the result is "subtract 9"
7. same logic as "6" result "subtract 53"
8.
Step-by-step explanation:
Answer:
It should be A. -12^2
Step-by-step explanation:
Looking at the box B, you have to multiple 3x and -4x. 3 * -4 is -12 and the two x's become squared. Making your answer -12x^2
Answer:
90
Step-by-step explanation:
all angels equal 180 so add the two you have then subtract 180 with the answer you got