Answer:
The value of x is 73.5.
Step-by-step explanation:
Given:
7/10=x/105.
Now, to find the value of 

So, to get the value of
we use cross multiplication:

By cross multiplying we get:

By dividing both sides by 10 we get:


Therefore, the value of x is 73.5.
Answer
44.1
Step-by-step explanation:
(-4.2)^2/2/5
17.64/2/5
44.1
Answer:
radius = 6.5
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 42.25 ← is in this form
with r² = 42.25 ( take the square root of both sides )
r =
= 6.5
9514 1404 393
Answer:
D. 210
Step-by-step explanation:
If b is the number of boys in the choir, the ratio of boys to girls is ...
b/150 = 7/5
b = 150(7/5) = 30(7) = 210
There are 210 boys in the choir.
Answer:
5323
Step-by-step explanation:
453