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adelina 88 [10]
3 years ago
12

Simplify the answer

Mathematics
1 answer:
Andru [333]3 years ago
8 0

Answer:

- 20 + 8i

Step-by-step explanation:

Noting that i²  = - 1

Given

[(6i + 9) + (4i - 5)] × 2i ← evaluate the terms inside the square bracket

= ( 6i + 9 + 4i - 5 ) × 2i

= (10i + 4) × 2i ← multiply each term in the parenthesis by 2i

= 20i² + 8i

= 20(- 1) + 8i

= - 20 + 8i

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The area of a triangle is 861 square centimeters. The length of the base is 82 centimeters. What is the height of the triangle?
aliya0001 [1]
Area of triangle=1/2×base×height
861cm^2=1/2×81×height
861=41× height
height=861/41
Height=21cm
so height of triangle is 21cm
4 0
3 years ago
Please help in this math question
iVinArrow [24]

Answer:

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Step-by-step explanation:

3 0
3 years ago
An octagon has side length 10.9 in. The perimeter of the octagon is 87.2 in cm and the area is 392.4 in2. A second octagon has c
Lana71 [14]
If the figures/solids are similar, the ratio of the areas is equal to the square of the ratio of the corresponding sides. Let x be the area of the second figure. The equation that would best allow us to answer this item is,
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The value of x from the equation is 1576.8 in².

Thus, the nearest answer is the second choice. 
8 0
3 years ago
Read 2 more answers
5000 12% compounded quarterly compound interest table find earned after 5 years
kolezko [41]
<h3>Amount earned after 5 years is $ 9030.5561</h3>

<em><u>Solution:</u></em>

<em><u>The formula for compound interest, including principal sum, is:</u></em>

A = p(1+\frac{r}{n})^{nt}

A = the future value of the investment including interest

P = the principal investment amount

r = the annual interest rate in decimal

n = the number of times that interest is compounded per unit t

t = the time the money is invested

From given,

p = 5000

t = 5 years

r = 12 \% = \frac{12}{100} = 0.12

<em><u>n = 4 ( since interest is compounded quarterly )</u></em>

<em><u>Substituting the values we get,</u></em>

A = 5000(1+\frac{0.12}{4})^{4 \times 5}\\\\A = 5000(1+0.03)^{20}\\\\A = 5000 \times 1.03^{20}\\\\A = 5000 \times 1.806111\\\\A = 9030.5561

Thus amount earned after 5 years is $ 9030.5561

7 0
2 years ago
A house worth $180,000 has a coinsurance clause of 75 percent. The owners insure the property for $101,250. They then have a los
Bess [88]

Answer:

$37,500

Step-by-step explanation:

We have been given that a house worth $180,000 has a coinsurance clause of 75 percent. The owners insure the property for $101,250. They then have a loss that results in a $50,000 claim.

We will use loss settlement formula to solve our given problem.

\text{Loss settlement}=\frac{\text{Loss}\times\text{Limit of insurance}}{\text{Actual cash value}\times \text{Coinsurance}\%}

Upon substituting our given values, we will get:

\text{Loss settlement}=\frac{\$50,000\times\$101,250}{\$180,000\times 75\%}

\text{Loss settlement}=\frac{\$50,000\times\$101,250}{\$180,000\times 0.75}

\text{Loss settlement}=\frac{\$5,062,500,000}{\$135,000}

\text{Loss settlement}=\$37,500

Therefore, they will receive $37,500 from insurance.

5 0
3 years ago
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