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seropon [69]
3 years ago
8

Solve the equation – 2 = k + 7

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0

-2 = k+7\\-2-7 = k\\-9 = k\\

Whenever you move from the left to right or right to left of any linear equations, you have to switch from plus to minus or multiply to division.

maria [59]3 years ago
6 0

Answer:

k= -9

Step-by-step explanation:

-2= k+7

-k= 7+2

-k = 9

k = -9

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Central High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following.
Elodia [21]

Answer:

390 seniors

Step-by-step explanation:

13/20=.65

600x .65=390

4 0
3 years ago
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A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex
Roman55 [17]

Answer:

 Standard error (S.E) =  0.048  ≅ 0.05

Step-by-step explanation:

<u>Explanation</u>:-

Given  sample size 'n'=76

Given the dean who randomly selects 76 students and finds that 58 out of 76 are receiving financial aid.

Sample proportion

                         p = \frac{x}{n} = \frac{58}{76} = 0.7631

The standard error is determined by

                     S.E = \sqrt{\frac{p(1-p)}{n} }

                     S.E = \sqrt{\frac{0.763(0.2369}{76} }

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3 0
3 years ago
1. (01.03 LC)
adoni [48]

Taking into account the definition of percentage, the correct option is: 21 percent of her net pay is left for savings.

First of all, the percentage represents a given quantity that establishes relationships between two quantities, using the number 100 as a reference.

That is, the percentage indicates what part of a total represents a quantity.

To obtain the percentage, the division must be made between the portion of the total and the total amount that belongs to the set, whose result is multiplied by 100.

In this case, if Lillie's current monthly net pay and her monthly expenses are $ 387.10, and I assume that the rest of the money is saved by Lillie, then the amount of money saved is $ 490 - $ 387.10 = $ 102.9.

Then:

  • portion of the total= amount of money saved= $102.9
  • total amount= Lillie's current monthly net pay= $490

So, the percentage is calculated as:

percentage= (102.9÷490) ×100

percentage= 0.21×100

percentage= 21%

The correct option is: 21 percent of her net pay is left for savings.

Learn more about percentage with this examples:

  • <u>brainly.com/question/19295956?referrer=searchResults</u>
  • <u>brainly.com/question/1301322?referrer=searchResults</u>
6 0
3 years ago
Can someone please help me??
butalik [34]

I do believe the answer is D

6 0
3 years ago
If 1*2= 5, 3*5= 13, and 2*7= 16, what is 6*8?
Anvisha [2.4K]
6*8 = 22

They Multiplied The Second Number By Two Then Added The First Number To It.
5 0
4 years ago
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