Answer:
Step-by-step explanation: I hope you understand this better
Because of the transversal and the parallel lines, we know that A+B=180°.
So:
5x + 20 + 9x - 92 = 180
14x - 72 = 180
14x = 180 + 72
14x = 252
x = 252/14
x = 18
A = 5x + 20
A = 5*18 + 20
A = 90 + 20 = 110
(Let’s check:
B = 9*18 - 92
B = 162 - 92
B = 70
70 + 110 = 180)
Since, the angle between the machine and angle of press is
as shown in the attached image.
Therefore, the actual weight lifted by the power lifter is given by
where 'w' stands for the weight being lifted and
is the angle of press.
Now,
actual weight lifted by the power lifter = 
=
pounds.
Answer: 1.30 every km
Step-by-step explanation:
to find the speed per km, you do 41 divided by 31.
41/31= 1.30 per km (rounded)
Answer:
x = ± 2
Step-by-step explanation:
Given
f(x) = x² + 1 and (x, 5 ) is a solution then f(x) = 5
Equating the two gives
x² + 1 = 5 ( subtract 1 from both sides )
x² = 4 ( take the square root of both sides )
x = ±
= ± 2
Thus (- 2, 5) and (2, 5) are solutions