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Step-by-step explanation:

Question 7.

Margaret's age=m

Henry's age=m+8

m+m+8=44

2m=44-8

2m=36

m=18

Question8

Henry's age=18+8=26

Question 9

(92+88+95+x)/4>90

275+x>90×4

x>360-275

x>85

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.