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Stella [2.4K]
2 years ago
11

Which of the following has all the justifications Kelsey used to solve this equation?

Mathematics
1 answer:
NeX [460]2 years ago
3 0
Option A, she added the one on both sides which makes it addition property of equality
You might be interested in
What is the answer to 4x + 27
Alla [95]

Answer:

Step-by-step explanation:

4x+27

----  ----

4       4

x=6.75 or x=7

7 0
3 years ago
4. Kay and Allen sell cell phones. Last month Kay sold 17 more cell phones than Allen. Together they both sold 117 cell phones.
forsale [732]

Answer:

Allen sold 50 cell phones while Kay sold 67 cell phones.

Step-by-step explanation:

Let the number of cell phones sold by Allen be x. This will imply that the number of cell phones sold by Kay is x + 17.

Furthermore, we are informed that together they sold a total of 117 cell phones. Therefore, we use the following equation to determine the number of cell phones sold by each;

x + x + 17 = 117

2x + 17 = 117

2x = 100

x = 50

Therefore, Allen sold 50 cell phones while Kay sold 67 cell phones.

7 0
3 years ago
Read 2 more answers
What is the set of numbers for -9
Step2247 [10]

rational numbers and integers

8 0
3 years ago
Approximately 0.8 of middle school students have cell phones. Which of the following fractions describes how many middle school
lana [24]

Answer: E. 4/5

Step-by-step explanation: You have to put the decimal (0.8) over its place value. So in this case 0.8 turns into 8/10. Then you must simplify 8/10, by dividing the numerator (8) and the denominator (10) by the greatest common factor (2). Which gives you the answer 4/5.

8 0
3 years ago
(-y+5•3)+7.2y-9)=6.2y+n
kramer
(-y+5x3)+(7.2y-9)=6.2y+n
(-y+15)+(7.2y-9)=6.2y+n
since you're adding the two parentheses, you don't need to have them there
-y+15+7.2y-9=6.2y+n
7.2y-y +15-9 =6.2y+n
6.2y + 6 =6.2y+n
6.2y - 6.2y -n = -6
-n=-6
n=6

3 0
3 years ago
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