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aliina [53]
3 years ago
8

-7a^3 + (-2a^3) I need to simplify

Mathematics
2 answers:
8090 [49]3 years ago
8 0
<span>-7a^3 + (-2a^3)
= </span><span>-7a^3 - 2a^3
= -9a^3

hope it helps</span>
KengaRu [80]3 years ago
4 0
If ^ means exponents, it should be -9a^6
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A regular pentagon has side lengths of 14.1 centimeters and an apothem with length 12 centimeters.
lina2011 [118]

Answer:

The approximate area of the regular pentagon is 423 sq.cm.

Step-by-step explanation:

Formula of area of regular pentagon =\frac{Pa}{2}

P=Perimeter of pentagon

a=Apothem

Side of pentagon = 14.1 cm

Perimeter of pentagon =5 \times Side = 5 \times 14.1=70.5

Apothem=12 cm

Area of regular pentagon = \frac{70.5 \times 12}{2}=423 cm^2

Hence the approximate area of the regular pentagon is 423 sq.cm.

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3 years ago
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Arte-miy333 [17]

Answer:

Step-by-step explanation:

160lb.

The mean of the weights of a group of 100 men and women is 160lb. If the number of men in the group is 60 and the mean weight of the men is 180lb, what is the mean weight of the women? For a set of data, the lower quartile is 19, the median is 31, and the upper quartile is 48.

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2 years ago
Select the correct image. ​
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3 years ago
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miv72 [106K]

Answer:

x-int (2, 0)

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General Formulas and Concepts:

  • The y-intercept is the y value when x = 0.  Another way to reword that is when the graph crosses the y-axis.
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Step-by-step explanation:

<u>Step 1: Locate x-intercept</u>

x-int (2, 0)

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y-int (0, 3)

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3 years ago
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