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UNO [17]
10 months ago
13

Thu gọn biểu thức : (x-5)(x+5)-(x+1)^2

Mathematics
1 answer:
Kipish [7]10 months ago
5 0

(x-5)(x+5)-(x+1)^2\\=x^2 -25-(x^2+2x +1)\\=x^2 -25-x^2-2x -1\\=-2x-26

ANSWER: -2x -26

Ok done. Thank to me :3

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Veronica is choosing between two health clubs after how many months will the total cost for each health club be the same
Assoli18 [71]

Question:

Veronica is choosing between two health clubs. after how many months will the total cost for each health club be the​ same? yoga studio a: membership: $24.00 monthly fee: 21.50. yoga studio b: membership: $41.00 monthly fee: $17.25

Answer:

It takes 4 years for the total cost of each club to become equal

Step-by-step explanation:

Given:

For yoga studio A:

membership: $24.00

monthly fee: 21.50.

For yoga studio B:

membership: $41.00

monthly fee: $17.25

To Find:

Number of months after which the total cost for each health club be the​ same = ?

Solution:

Let   x be the number of months of membership, and   y  be equal the total cost.

For Yoga club A

y = 21.50 x + 24

For Yoga club B    

y = 17.25 x + 41.00

we know that the prices,   y , would be equal, we can set the two equations equal to each other.

21.50 x + 24 =17.25 x+ 41.00

Grouping the like terms,

21.50x - 17.25 x= 41.00 -  24

4.25x=17

x=\frac{17}{4.25}

x = 4

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3 years ago
The number doing the dividing in a division problem
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Answer:

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Step-by-step explanation:

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Please answer this correctly
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Answer:

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Step-by-step explanation:

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Steps for solving rational equations
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Answer:

1. Find the common denominator.

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Step-by-step explanation:

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2 years ago
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A map has a scale of 2 inches : 12 miles. Two cities on the map are 6.5 inches apart. Find the actual distance between the two c
almond37 [142]

Answer:

39

Step-by-step explanation:

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3.25 x 12

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6 0
2 years ago
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