Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2

The correct answer is 8. But in the option there is no option with answer 8

Step-by-step explanation:

The given expression is,

x - 9 = -6 + 5

RHS = -6 + 5  = -1

LHS = x -9

LHS = RHS

Therefore x - 9 = -1

x = -1 + 9 = 8

Therefore the correct answer is 8.

There is no option with correct answer. So we cant

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls