61 / 4 = will be 15 so he haves 15 friends
1. D
2. C
3. B
4. D
5. 48 cm^3
6. 191.55 cm^3
7. Not sure
8. C
Answer:the number is 8
Step-by-step explanation:
Step 1
Let x be the number 13 was subtracted from so that the difference becomes x-13
i. dividing the resulting difference by 5, then (x-13)/5
ii. Multiplying the quotient by 7 makes the expression become (x-13)/5 x 7
with the product coming to -7 we have our final equation as
(x-13)/5 x 7 = -7
Step 2 -----solving the equation
(x-13)/5 x 7 = -7
Ist divide both sides by 7,
(x-13)/5 =-1
cross multiplying gives
x-13=-5
x= -5+ 13
x=8
the number is 8
Answer:
4
Step-by-step explanation:
4*5=20
2*3=6
1/2*20=10
10-6=4
