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Sladkaya [172]
2 years ago
7

What is the sum of (x - 8) - (2x + 2)

Mathematics
2 answers:
Dahasolnce [82]2 years ago
7 0

Answer:

the answer is 4

vitfil [10]2 years ago
7 0

Answer:

-z-10

Step-by-step explanation:

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Which statement best describes the equation x^5+x^3-14=0
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<span>The equation is not quadratic in for because it cannot be written as a second degree polynomial</span>
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3 years ago
Can some please answer! There is a picture! Thank you!!!!
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We know that the measure of arc AC = 92 degrees, and x and y are both inscribed angles of this arc, which means that they will have 1/2 of its measure.

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x = 46, y = 46 is your answer, or the first option
3 0
3 years ago
Members of a college chemistry department agree to contribute equal amounts of money to make up a scholarship fund of $280. Then
Zarrin [17]

Answer:

7 members

Step-by-step explanation:

Lets say that the department has n members. If each member contributes with an equal amount x and make a total of $280, we know that:

n*x = 280

Where each one colaborated with:

n*x/n = 280/n

Or what is the same that: (as the n on the left eliminate themselves)

x = 280/n (*)

Now the department hires 3 more members, so we now have n+3 members. And we know that the pass from contributing x to contribute $30 less, it is, x-30 (I omit the $ symbol for simplicity). So, know we have:

x-30 = 280/(n+3)

We can replace x here by the formulation of x we did in the (*) equation:

( 280/n) - 30 = 280/(n+3)

using common denominator:

( 280/n) - 30 n/n = 280/(n+3)

( 280 - 30 n)/n = 280/(n+3)

Cross multiplying the denominators:

( 280 - 30 n)*(n+3) = 280*(n)

280n - 30n^2 + 840 - 90n = 280n

Subtracting 280 n in both sides:

30n^2 + 840 - 90n = 0

Dividing both sides by 30:

-n^2 - 3n + 28 = 0

Factorizing this term (you can notice the factor immediately or solving with baskara resolution, I omit the baskara for simplicity):

-(n + 7)(n - 4) =0

So, n is equal to 4 and -7. As we are dealing with people we can not have -7 people, so we keep only n=4.

So, previous the new hiring there were 4 members, now there are 7.

The used to collaborate with 280/4 = $70, now the collaborate with 280/7=$40, and we see the collaboration decreased in $30.

7 0
3 years ago
Amanda is selling cupcakes to raise money for charity. On the first day, she sells 12 cupcakes for a total of $64.68. On the sec
stiv31 [10]
The exact answer would be 167.09 so if you round the closest answer is D. $170
3 0
3 years ago
Read 2 more answers
What is the correct factorization of
Angelina_Jolie [31]

Answer:

<em><u>(x</u></em><em><u>-</u></em><em><u>1)(x</u></em><em><u>+</u></em><em><u>6)</u></em>

Step-by-step explanation:

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3 years ago
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