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Sauron [17]
3 years ago
7

HELPPPPPP!!!!!!!!!!!!!

Mathematics
1 answer:
Volgvan3 years ago
4 0

Answer:

Statement F is true

Step-by-step explanation:

Let x represent number of yoga classes

Let y represent total cost

Let m represent the additional fee per yoga class

Let b represent the membership fee

y=mx+b

Notice that after every 2 classes, the price goes up by 7.5 so m=7.5/2

m=3.75

Thus the first statement is true

Note you can also find the membership fee if you plug this in with some points

y=mx+b

67.5=3.75(6)+b

b=45 so membership fee is $45

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In how many ways can the first 4 guests arrive at a party if 15 guests have been invited.
notsponge [240]

Answer:

The first 4 guests can arrive in 32,760 ways.

Step-by-step explanation:

The order in which the guests arrive is important. For example, A,B,C,D is a different outcome to B,A,C,D. So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!}

In this question:

4 guests from a set of 15. So

P_{(15,4)} = \frac{15!}{(15-4)!} = 32760

The first 4 guests can arrive in 32,760 ways.

6 0
4 years ago
Read 2 more answers
+<br> 9<br> y<br><br> Find <br> x<br> when <br> y<br> =<br> 6<br> and <br> R<br> =<br> 7
rodikova [14]

Answer:

15 2/3

Step-by-step explanation:

R = 3x + 9y

7 = 3x + 9(6)

7 = 3x + 54

-47 = 3x

x = -15.6

5 0
3 years ago
Solve by completing the square
HACTEHA [7]

Answer: x  =  − 1  ± i√ 23

5 0
2 years ago
Olivia has $60 in a savings account. The interest rate is 5% compounded annually. To the nearest cent how much interest will she
Gnom [1K]

Answer: She will earn 6 dollars in two years!

Step-by-step explanation: 10% of 60 is 6 because 10 sixes make up 60.

Hope this helps, if not, comment below please!!!

7 0
3 years ago
I need help please my marking period end tomorrow
yarga [219]
Number 5 should be no solution becuase the n's cancel out.

For 6:
Part A is -2 because slope represents the change in weigh/change in time (-2/1 or -2)
Part B is y=-2x+231 (-2 is the slope and 231 is the y-intercept)
For part C, based on the slope, we can find that her weight will go below 200 at week 16 when it is 199

Hope this helps!
6 0
4 years ago
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