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Zepler [3.9K]
3 years ago
5

If x= -3, then x2 -7x 10 equals

Mathematics
1 answer:
NikAS [45]3 years ago
5 0
(-3)^2 - 7(-3) × 10 = 219
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A grade has 81 girls and 72 boys. The grade is spilt into groups that have the same ratio of boys to girls as the whole grade. H
MariettaO [177]
There are 81 girls to every 72 boys in total, which can be represented by 81/72, which put into decimal form, is 1.125. If you then take the number of boys in the group, 16, and multiply it by this number (because the problem states that the ratio is constant) you can find the number of girls in the group.

16*1.125=18

So there are 18 girls in a group with 16 boys.

4 0
4 years ago
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Factor the expression. 120k^3-80k^2+144k-96
lutik1710 [3]

Answer:

40k^2(3k - 2) +  48(3k - 2)

(40k^2 + 48)(3k - 2)

8(5k^2 + 6)(3k -2)

Step-by-step explanation:

5 0
4 years ago
Wayne bought blueberries. He uses 3/8 of the blueberries to make blueberry​ bread, 1/6 of the blueberries to make​ pancakes, and
Montano1993 [528]
Berries and cream
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4 0
3 years ago
The area of a rectangle is 32a^3b^4 square units. The length is 4a^2b. Find the width. show your work
kaheart [24]

Answer:

The answer to your question is width = 8ab³

Step-by-step explanation:

Data

Area = 32a³b⁴ u²

length = 4a²b   u

Formula

Area of a rectangle = width x length

Solve for width

                           width = \frac{Area}{length}

Substitution

                          width = \frac{32a^{3}b^{4}}{4a^{2}b}

Simplify using rules of exponents, just remember that in a division we subtract the exponents and divide the coefficients normally.

                          width = 8 a²b³

7 0
3 years ago
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6X to the -8th times negative 3X to the -3
Westkost [7]
Im pretty sure it's -18x^11
4 0
4 years ago
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