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mamaluj [8]
3 years ago
8

Simplify the expression by combining like terms if possible. If not possible select already simplified. 4a^2+2a+4a^2-5

Mathematics
1 answer:
vichka [17]3 years ago
8 0
So the expression is: 4 a^{2} + 2a + 4 a^{2} - 5

You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two 4 a^{2}. 4 a^{2} + 4 a^{2} = 8 a^{2} The other terms can't be combined.

Your final answer should be 8 a^{2} +2a-5.
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Find the area of each figure. Use 3.14
grigory [225]
<h3>Answer:  23.13 square meters</h3>

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Explanation:

The top and bottom semicircles can be joined to form a full circle. The same can be said about the left and right semicircles. Each circle has diameter 3 and radius 1.5

The area of one circle is

A = pi*r^2

A = 3.14*(1.5)^2

A = 7.065

So two circles doubles to 2*7.065 = 14.13 square meters in area.

Then the last step is to add on the area of the 3 by 3 square (area 3*3 = 9) to get 14.13+9 = 23.13

This area is approximate because pi = 3.14 is approximate. Use more decimal digits in pi to get a more accurate area. However, your teacher wants you to use this specific value so it's best to stick with 23.13

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3 years ago
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Alex17521 [72]

Answer: i know this is way late, but it’s 48

Step-by-step explanation:

Since point A is the separation of BE, both sides of the separation are equivalent, the are congruent. Since AB=24, you add 24+24 to get 48.

(I also just answered this question on homework and got it right, this is just how I did it.)

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Oksanka [162]
So, let's first focus on the first year:

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So it will be 23000*1.02

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4 years ago
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saw5 [17]

Answer:

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8+w/4, when w=16

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