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maw [93]
3 years ago
15

9.

Mathematics
2 answers:
wariber [46]3 years ago
7 0
9.
6y+4=8+2y+2y
Combine like terms
6y+4=8+4y
Get like terms on the same side, subtract 4 from both sides to get
6y=4+4y
Subtract 4y from both sides to get
2y=4 IS the answer (even though it can be simplified further, that answer isn't one of the choices so 2y=4 is the equation simplified.)

10.
Step 2 was the mistake when you distribute a number you don't add (which is what they did to get 5x) you multiply to get 6x. So the correct step 2 would be
6x-8=12+2x
Becuase of the distributive property.

Hope this helped!



mars1129 [50]3 years ago
4 0
Question 9:

<span>6y + 4 = 8 + 2y + 2y

6y + 4 = 8 + 4y

6y - 4y = 8 - 4

2y = 4

y = </span>\frac{4}{2}

y = 2

Hence, the answer is C.

Question 10:

<span>2(3x – 4) = 8 + 2x + 4

6x - 8 = 12 + 2x

6x - 2x = 12 + 8

4x = 20

x = </span>\frac{20}{4}

x = 5

Hence, the answer is B.
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2 years ago
Ruth contributes 15% of the total cost of her individual health care. This is a $ 60.00 deduction from each of her biweekly payc
german

Answer:

A.) $10,400

Contribution every payday = $60

Pay periods in a year = 26

Step-by-step explanation:

Assume her salary, that is total cost = y

Percentage deduction 15% of total cost

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Therefore, 15% of y = $60

(15/100)y = 60

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8 0
3 years ago
The mean monthly rent of students at Oxnard University is $780 with a standard deviation of $208.
Nonamiya [84]

Answer:

a) 2.188

b) John's rent is not an outlier

c) His rent has to be higher than $1,235 to be an outlier

Step-by-step explanation:

The mean monthly rent of students at Oxnard University is $780 with a standard deviation of $208.

(a) John’s rent is $1,235. What is his standardized z-score?

We solve using z score formula

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(b) Is John’s rent an outlier?

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John’s rent would have to be higher than $1235

8 0
3 years ago
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