Mary has 5 2/5 yards of string. Written as an improper fraction, 5 2/5 = 27/5 yards of string.
The friend was given 2/3 of the string. The friend received 2/3 * 27/5 = 18/5 yards which is the same as 3 3/5 yards and also 3.6 yards.
After Mary gave the friend the string, Mary had 27/5 - 18/5 = 9/5 yards left.
9/5 yards is the same as 1 4/5 yard and also 1.8 yards.
Answer:
31
Step-by-step explanation:
subsitute
35-4
<h2> answer:</h2>
62.8 cm
<h2 /><h2>explanation:</h2>
circumference = 2πr
=2 × 3.14 × 10
= 62.8 cm
First of all, we have to observe that the expression makes sense only if
otherwise, you'd have zero denominators, which are not allowed. So, assuming , let's sum the two fractions at the left hand side:
Again, since we're assuming , we can multiply both sides by to get
This equation has solutions and , but we can only accept the first, since 1 is a forbidden value.
So, the only solutions to this equation is