3 years ago

X + 2x - 9 + xy - 2 - 3x + 2xy - 4

Mathematics

1 answer:

frozen [14]3 years ago

3 0

Answer:

3xy-15 thats the simplified form

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When you owe money, you have a negative balance. You owe $200 to your bank. You pay $30 back. What is your new bank balance?

Mandarinka [93]

So in this problem we need to do some addition.

take the starting balance (-200) and add it to the amount you paid back (30)

-200 + 30 = -170

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3 years ago

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70 hundred is equal to how many thousands

Ann [662]

70 x 100 = 7,000

Therefore, 70 hundred is equal to 7 thousands.

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3 years ago

Which of the following is the correct factorization of the polynomial below? 8x3 + 64y3 A. (4x + 4y) (2x+8y) B. (2x + 4y)(4x2 -

stepladder [879]

Answer:

B. (2x+4y)(4x2-8xy+16y2)

Step-by-step explanation:

hope this helps!

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3 years ago

What is 7x^5-33x^4-4x^2+3x+52=0

lorasvet [3.4K]

7x^5-33x^4-4x^2+3x+52=

ANSWER: 7x^5 -33x^4 -4x^2+3x+52 (because there are no like terms)

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3 years ago

There are books in a library, there are 4 different kinds of books. Science books make up 3/4 of art books. Comic books are 1/4

Sergeeva-Olga [200]

Answer:

The total number of books is 1020.

Step-by-step explanation:

Denote the books by their first letter.

From the provided information:

$S=\frac{3}{4}A$
$C=\frac{1}{4}T$
$H=\frac{1}{5}T$
$H = A-80$

Compute the expression of T as follows:

$H = A-80\\\\\frac{1}{5}T=A-80\\\\T=5A-400...(i)$

Compute the value of C in terms of A:

$C=\frac{1}{4}T\\\\C=\frac{1}{4}\times {5A-400}\\\\C=\frac{5}{4}A-100...(ii)$

Compute the value of A as follows:

Use expressions (i) and (ii):

$T=S+C+H+A\\\\5A-400=\frac{3}{4}A+\frac{5}{4}A-100+A-80+A\\\\5A-400=4A-180\\\\A=220$

Compute the value of T as follows:

$T=5A-80\\\\T=(5\times 220)-80\\\\T=1100-80\\\\T=1020$

Thus, the total number of books is 1020.

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3 years ago