Answer:
m∡A = 14
m∡B = 76
Step-by-step explanation:
Two Angles are Complementary when they add up to 90 degrees.
So 3x -7 + 11x - 1 = 90, which we can solve.
14x - 8 = 90
14x = 98
x = 98/14 = 7
with the knowledge of x=7, we can find the angles:
m∡A = 3·7 - 7 = 14
m∡B = 11·7 - 1 = 76
Supplementary angles are angles that add up to 180 degrees, so the next assignment is very comparable, try it!
It will take an additional 8 weeks to reach a height of 48 centimeters.
y = 4.5x
Since, the maximum height is 48 cm and the plant has already grown 12 cm, we deduct the 12 from 48 to get the additional weeks it needs to grow.
48 - 12 = 4.5x
36 = 4.5x
36/4.5 = 4.5x / 4.5
x = 8 weeks.
Answer:
30 mph
Step-by-step explanation:
train stopped after 520 miles
780 miles to go
stopped at 20 hours
stopped for 4 hours
34 hours used up...
26 hours left
780 miles to go
780 miles/26 hrs = 30 m/hr
Answer: A, E
Explanation: with a simple math problem like this a calculator is going to be more efficient. This, however, can be done by hand so each way can get to the right answer
107,609÷72= <span>1494.56944444
9,317÷95= </span><span>98.0736842105
hope this helps :-)
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