So 12=total
7=blue
black=total-blue=12-7=5
black=5
1. 2/3 of 12 were taken out or 24/3 were taken out or 8 marbles were taken out
there is not enough info becasue it doesn't specify which ones were taken out
2. there is not enough info
3. not chosen=total-chosen=12-8=4 so 4 were chosen
Answer:
6 × 9 = 54
42 ÷ 7 = 6
56 ÷ 7 = 8
Step-by-step explanation:
Given:
6 × 9 = 54
8 × 4 = 34
42 ÷ 7 = 6
64 ÷ 9 = 7
56 ÷ 7 = 8
Now it need to verify,
6 × 9 = 54 this is correct
42 ÷ 7 = 6 This is also correct
56 ÷ 7 = 8 This is correct
Answer:
The solutions are (-√6,0) and (√6,0)
(-√5,-1) and (√5,-1)
Step-by-step explanation:
The equations are:
and
We make y the subject in the second equation to get;
We substitute into the first equation to get:
and 
The solutions are (-√6,0) and (√6,0)
(-√5,-1) and (√5,-1)
Answer:
x ≤ 17
Step-by-step explanation:
This is the same as solving an equation, except instead of and equal sign it's an arrow.
We have to evaluate everything in the parenthesis first.
3x - 2 (x + 1) ≤ 15
3x - 2x - 2 ≤ 15
Next, we combine like terms - x's
3x - 2x - 2 ≤ 15
x - 2 ≤ 15
Combine like terms - constants (add 2 to both sides)
x - 2 ≤ 15
<u>x ≤ 17</u>
