Answer:
#1: 4) D
#2: 1) 34.89 = 3 × C
#3: 4) 6y + 18
Step-by-step explanation:
#1
Using the distributive property:
3 × 5z = 15z
3 × -3 = -9
The correct expression is 15z - 9. Hence, D is the right option.
#2
You need to find the cost of each box.
3 × C = 34.89
34.89 ÷ 3 = 11.63
3 × 11.63 = 34.89
Hence, 1) is the right option.
#3
Using the distributive property:
6 × y = 6y
6 × 3 = 18
The expression is 6y + 18. Hence, 4) is the right option.
hope this helps!! p.s. i really need brainliest :)
Answer:
1. #4, D
2. #1, 34.89 = 3 x c
3. #4, 6y + 18
Step-by-step explanation:
1. Which pair of expression are equivalent (=)?
A.
10c + 20 = 5(5c + 4) <== distribute
10c + 20 = 25c + 20
This pair is not equivalent
B.
3(4e - 2) = 7e - 5 <== distribute
12e - 6 = 7e - 5
This pair is not equivalent
C.
4(4h + 6) = 16 + 24 <== distribute
16h + 24 = 16 + 24
This pair is not equivalent (look carefully, it's missing an h)
D.
15z - 9 = 3(5z - 3) <== distribute
15 - 9 = 15z - 3
This pair is equivalent
Therefore, the correct answer is D
2. Mr. James bought 3 boxes of pencils for $34.89. Each box of pencils costs the same. Which equaiton can be used to find the cost, c, of each box?
We know that 3 boxes of pecils cost $34.89, and c represents the cost of one box. If c represents the cost of one box and there are 3 boxes, it would be 3c or 3 x c.
Looking at the answer choices, #1 is the only option that represents that.
Therefore, the correct answer is 1) 34.89 = 3 x c
3. Aidan wrote an expression 6(y + 3). Which expression is equivalent to the one Aidan wrote?
6(y + 3) <== distribute
6y + 18
Therefore, the answer is 4) 6y + 18
Hope this helps!
