Answer:
<em>5 units </em>
Step-by-step explanation:
BD is geometric mean ⇒ BD² = AD × DC
4x² = 10² and x > 0
x² = 25
x = <em>5 units</em>
Answer:
$68.75
Step-by-step explanation:
If 4 of the tires cost 275 as a total, you'd simply divide 275 by 4, leaving you with the cost of 1 tire, which is $68.75.
We are asked to find 7 is what percent to 30.
We will use proportions to solve our given problem.
Let us assume that 7 is n% of 30. So we can set a proportion as:

Let us solve for n.




Therefore, 7 is
of 30.
The first option because y is x times 4 in this table