Answer:
5
Step-by-step explanation:
x = 5
Original equation x = yz / a solve for a
xa = yz
a = yz / x
Answer:
B. 20 years
Step-by-step explanation:
By using the process of trial and error, if Gina is 20 years old, that would mean her sister is 29 years old. This is because 20+9 is equal to 29. 29+20 sums up to 49.
The number of degrees does it move in 2 1/5 hours is -66°.
<h3>How to calculate the number of degrees?</h3>
From the information given, it was illustrated that the hour hand of a clock moves −30° every hour.
Therefore, to calculate the degree for a number of hours, we simply have to multiply.
In this case, to get the degree for 2 1/5 hours will be:
= Degree every hour × Number of hours
= -30° × 2 1/5
= -30° × 2.2
= -66°
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