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tatuchka [14]
3 years ago
12

2/5(a+2b)^2 (if a=3 and b=-4)

Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0

The answer is 10. Hope this helps.

Multiply the numbers

2/5 •(3-8)^2

Subtract (3-8)

2/5• (-5)^2

A negative base raised to an even power equals a positive

2/5• (5)^2

Reduce the expression with 5.

2•5

10

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Find the diameter of each circle.
Vedmedyk [2.9K]

Answer:

<em>Diameter Length: ( About ) 5.4 km; Option B</em>

Step-by-step explanation:

~ Let us apply the Area of the Circle formula πr^2, where r ⇒ radius of the circle ~

1. We are given that the area of the circle is 22.9 km^2, so let us substitute that value into the area of the circle formula, solving for r ( radius ) ⇒ 22.9 = π * r^2 ⇒ r^2 = 22.9/π ⇒ r^2 = 7.28929639361.... ⇒

<em>radius = ( About ) 2.7</em>

2. The diameter would thus be 2 times that of the radius by definition, and thus is: 2.7 * 2 ⇒ ( About ) 5.4 km

<em>Diameter Length: ( About ) 5.4 km</em>

5 0
3 years ago
A carpenter has a board that is 8 feet long. He cuts off two pieces. One piece is 3 1/2 feet long and the other is 2 1/3 feet lo
Aneli [31]
Add 3 1/2 and 2 1/3, 

Firstly, find the common denominator. It is is 6

3 3/6 + 2 2/6

this gets you 5 5/6.

Take this away from 8:

8 - 5 5/6 = 2 1/6

So 2 1/6 of the board is left over.
6 0
3 years ago
The table gives the probability distribution of the annual rate of return on the stock of MNP Company, Inc. What is the expected
krok68 [10]
For the answer to the question above,
The expected value in percentage format is 0.2 x 15+0.4 x 20 + 0.3 x 30 + 0.1*35 = <u><em>23.5%</em></u>
The answer is <u><em>23.5%
</em></u>

I hope my answer helped you. Have a nice day ahead!
<u><em /></u>
8 0
2 years ago
Read 2 more answers
At the electronics store, television screens are sized by the lengths of their diagonals. The television that Ms. Duckworth want
Inessa05 [86]

Answer:

55.8

Step-by-step explanation:

44 ^ 2 = 1936

b ^ 2 = 55 .8 ^ 2

51 ^ 2 = 2601

6 0
2 years ago
Four friends split equally a lunch bill of $36.69 plus 20% tip how much did each person pay
nikdorinn [45]
20% of 36.69 is 7.338 

36.69 + 7.338 = 44.02800 divided by 4 = $11.007 (rounded)

Each friend paid $11.01
7 0
3 years ago
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