Question

URGENT!!

Write an algebraic equation for the following and solve it. Show all your steps
1. The sum of one-third of a number and 4 is 7. What is the number?
2. The sum of the square of a number and 7 is 32. What is the number?
3. Thirty divided by seven times a number is 1. What is the number?

Answer 1

let the number be x for all the qns

1. x/3+4=7

x/3=3

x=9

2. x^2+7=32

x^2=25

x=5 or -5

3. 30÷7x=1

30=7x

x=30/7 or 4.29(3.s.f.)