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MA_775_DIABLO [31]
4 years ago
9

ASAP!! can someone help answer these and include work, whoever answers most gets brainliest!! i underlined the questions

Mathematics
1 answer:
jeka57 [31]4 years ago
5 0

your work for the first one is perfect!!

the second one gives you the side lengths of x+2 and x-5. the formula for the area of a rectangle is l×w so you have to multiply (x+2)(x-5) and im sure you can figure that out but the answer to that is x^2-3x-10

you set up number 3 right, you just need to continue with the distribute property which would give you 4x^2-20x+25

number 4 is the same as the other ones and the answer is 36x^2-1

number 5 is just distributing the -z^3 into everything in the parenthesis giving you -5z^3-z^4+4z^5

I cant see all your work for number 6, but I can see that your term for c is 5, when it is actually -5. it looks like you didnt subtract it to make the quadratic equal to zero and to do that you would have to subtract 5.

tbh I cant read number 7

hope that helped :)

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He had a profit of $2.  Made a $1 each time he sold it.

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4 years ago
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Add 17/99 + 27/99 + 15/99
Helen [10]

Answer:

59/99

Step-by-step explanation:

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Sally has a piece of cloth used 1/3 of a foot of the cloth to make a pillow cover in another 4/7 of a foot of the cloth to make
iren [92.7K]

Answer:

\frac{23}{21} feets

Step-by-step explanation:

Given.

Sally started with two feets of cloth.

Total cloth = 2 feets

She used \frac{1}{3} of a foot of the cloth to make a pillow cover.

And another \frac{4}{7} of a foot of the cloth to make a table cloth.

She used total cloth to make a pillow cover and table cloth = \frac{1}{3} +\frac{4}{7}

=\frac{7+12}{21} \\=\frac{19}{21}

Total used cloth by Sally = \frac{19}{21}

The equation for remaining cloth

remaining cloth = total cloth - used cloth

remaining cloth = 2 - \frac{19}{21}

remaining cloth = \frac{2\times 21-19}{21}

remaining cloth = \frac{42-19}{21}

remaining cloth = \frac{23}{21}

Sally has remaining cloth = \frac{23}{21} feets

8 0
3 years ago
If angle U = 8x + 9 degrees, and angle W = 8x - 5 degrees, then the measure of angle U is ___ degrees.
PolarNik [594]

Answer:

m<U = 97^{o}

Step-by-step explanation:

From the given question, it can be observed that angles U and W are supplementary. These are angles that add up to 180^{o}.

So that;

<U + <W = 180^{o}

(8x + 9) + (8x - 5) = 180^{o}

16x + 4 = 180^{o}

16x = 180^{o} - 4

16 x = 176

x = \frac{176}{16}

  = 11^{o}

The measure of angle U = (8x + 9)

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                                        = 88 + 9

                                        = 97^{o}

Thus, the measure of angle U is 97^{o}.

8 0
3 years ago
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