Answer:
A. x=3
Step-by-step explanation:
4(5x+3)=14x+30
multiply 4 to 5x and multiply 4 yo 3
20x+12=14x+30
move terms
20x-14x=30-12
subtract 20x to 14x and subtract 30 to 12
6x=18
divide both sides by 8
x=3
Answer:
C) 109.5
Step-by-step explanation:
Use cosine of 64°
cos 64° = 48/x
Put x on one side
x = 48/ cos 64°
x = 109.4962576
To find 708/100 just divide! 708 divided by 100 is 7 with a remainder. Turn the remainder which is 8 as a fraction by placing the 8 over 100. Then simplify. 8/100=4/50=2/25
Your answer is 7 and 2/25
Angle B is 50 degrees, subtract 40 degrees from 90 because complementary means a total of 90
