Answer:
1st one)
y = 4
2nd one)
y = -12.5
Step-by-step explanation:
5y - 20 = 0
add 20 on both sides:
⇒ 5y - 20 + 20 = 0 + 20
⇒ 5y = 20
divide 5 on both sides
⇒ 
⇒ y = 4
2y + 25 = 0
subtract 25 on both sides
⇒ 2y + 25 - 25 = 0 - 25
⇒ 2y = -25
divide 2 on both sides:
⇒ 
⇒ y = -12.5
Answer:
Step-by-step explanation:
To calculate volume the formula is length x width x height
So, to get the answer you would use that formula on each rectangular prism
Prism A - 4 x 5 x 6= 120cm
Prism B - 3 x 4 x 8= 96cm
Prism C - 5 x 3 x 7= 105cm
A- false
B- false
C- true
D- true
E- true
5a - (-2a) + 9
When you subtract a negative number, you can replace the 'double negative' with a positive, or addition. So, instead of subtracting -2a, you can add 2a.
5a + 2a + 9 Combine like-terms
7a + 9
The unit price of the sodas is $1.25. It would cost $312.5 for 250
Answer:
C.
Step-by-step explanation:
5 is not less than 2
5 is not greater than 9 or 42
