One gym charges $40 per month and $3 per exercise class. Another gym charges $20 per month and $8 per exercise class. After how many classes will the monthly cost be the same and what will the cost be?Its a Systems Question.

Answers

Answer 1

Answer: y=3x+40
y=8x+20
when they are the same
3x+40=8x+20
x=4
so at 4 sessions they will be the same but the one that charges 8 per class will become more costly

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Square root of 7x plus the square root of 28x

When using the binomial formula, which of the following is a correct step in the expansion of (x+y)4

Answers

x+y=4 is a correct step

Jason and Ron together have 97 baseball cards. Jason has four more than twice as many cards as ron. How many baseball cards does each person have?

Answers

Let r be the number of cards Ron has.

r + 2r + 4 = 97
3r + 4 = 97
3r + 4 - 4 = 97 - 4
3r = 93
3/3r = 93/3
r = 31

Ron has a total of 31 cards and Jason has a total of 66 cards.

Kala purchased a prepaid phone card for S15. Long distance calls cost 24 cents a minute using this card. Kala used her card only once to make a longdistance call. If the remaining credit on her card is $5.64, how many minutes did her call last?

Answers

$15 - x = 5.64$

$15 - 5.64 = x$

$9.36 = x$

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How many solutions does the equation −5a + 5a + 9 = 8 have?None
One
Two
Infinitely many

Answers

Answer:

Option A is correct

None

Step-by-step explanation:

Like terms are those terms which have same variable to the same power.

Given the equation:

$-5a+5a+9=8$

Combine Like terms;

$0+9 = 8$

⇒ $9 = 8$ False.

This statement is false for any values of x

therefore, the given equation does not have any solution.

Hello,

Answer A: None
0a+9=8
==>9=8 equation impossible 0 solution

Choose the correct simplification of the expression (−2x + 8y)(9x − 3y).−18x2 + 78xy − 24y2
18x2 + 78xy − 24y2
−18x2 − 78xy + 24y2
−18x2 + 72xy − 24y2

Answers

For these kinds of expressions use FOIL (first, outside, inside, last).

-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2

Now combine them all:

-18x^2 + 78xy - 24y^2

Answer:

The answer is A I just took the test

Step-by-step explanation:

Solve with completing the square method:
6x²-7x+2=0 and ax²+bx+c=0

Answers

$6x ^2-7x+2=0\n \n a=6 , \ b = -7 , \ c=2 \n \n\Delta = b^(2)-4ac = (-7)^(2)-4*6*2=49-48=1 \n \nx_(1)=(-b-√(\Delta ))/(2a) =(7-√(1))/(2*6)=(7-1)/(12) =(6)/(12)= (1)/( 2)\n \nx_(2)=(-b+√(\Delta ))/(2a) =(7+√(1))/(2*6)=(7+1)/(12) =(8)/(12)= (2)/( 3)$

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