How can you add 3over 10 and 2over5

7/10

Step-by-step explanation:

Using the lowest common factor as 10.

Expressing it, 3/10 + 2/5

(10 into 10 times 3) plus ( 5 into 10 times 2)

= 3 plus 4, all over 10

= Seven over 10

m∠a is 90°

m∠b is 40°

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.