10 hats because she bought 6-3=3 then 7 hats in total +3=10
Answer:
6
Step-by-step explanation:
Answer: 21
Step-by-step explanation: All he did was took the amount of red and gave it a ratio of 7:1 meaning that he will increase the amount of red and make it 21 because the number 8 increased by 3 so 7 must increase by 3 as well.
Step-by-step explanation:
5miles=8km
? =12
5miles×12km=?×8km
60km miles=?×8km
?=60miles÷8
?=7.8miles
Answer:
<em>x</em> = -1
Step-by-step explanation:
Let's solve your equation step-by-step.
7x + 12 = 2(1 − x) − x
Step 1: Simplify both sides of the equation.
7x + 12 = 2(1 − x) − x
7x + 12 = (2) (1) + (2) (− x) + − x (Distribute)
7x + 12 = 2 + − 2x + − x
7x + 12 = (− 2x + − x) + (2) (Combine Like Terms)
7x + 12 = − 3x + 2
7x + 12 = − 3x + 2
Step 2: Add 3x to both sides.
7x + 12 + 3x = − 3x + 2 + 3x
10x + 12 = 2
Step 3: Subtract 12 from both sides.
10x + 12 − 12 = 2 − 12
10x = − 10
Step 4: Divide both sides by 10.
10x/10 = - 10/10
x = - 1
Hope this helps! Sorry if it is confusing!
