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3 years ago

16. Which of the following are complementary angles?

Mathematics

1 answer:

EleoNora [17]3 years ago

6 0

A: 71+19=90 Complementary: angles add to 90

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Suppose that you want to have $1,000,000. so, you invest an initial $15,000 today which pays an annual compounding rate of 9%. a

xenn [34]

To awnser this , you first need to discover how much is 9% of 15000 that you invested.
To discover that you can just divide by 100 and multiply by 9
15000 ÷ 100 = 150
150 × 9 = 1350
So each year he earns $1350 but he has $1000 annual payments , so he only profit $350 a year.
Now to discover how long it will take to achieve $1.000.000 back you can just take the the $15.000 he needs to have 1.000.000 and divide by how much he profit each year
15000÷350= 42.85
which means it will take approximately 42 years and 10 months to achieve $1.000.000

3 0

4 years ago

On the first day of June, there were about 16.78 h of daylight in a city. Five months later, there were about 6.70 h of daylig

Semmy [17]

Answer:

60.07%

Step-by-step explanation:

Decrease: 16.78 - 6.70 = 10.08

% decrease:

10.08/16.78 × 100 = 60.07151371%

4 0

3 years ago

Read 2 more answers

Please show all steps and explain what you did thoroughly, thank you for your time and help.

Makovka662 [10]

Answer:

Step-by-step explanation:

1) x² + 6x + 11 = 0

a = coefficient of x² = 1

b = coefficient of x = 6

c = Constant = 11

Roots = (-b ± √b² - 4ac)/2a

$D = \sqrt{b^{2}-4ac}\\\\=\sqrt{6^{2}-4*1*11}\\\\=\sqrt{36-44}\\\\=\sqrt{-8}\\\\=\sqrt{8i^{2}}\\\\ = 2i\sqrt{2}$

Roots = $\dfrac{-6 \± 2i\sqrt{2}}{2}\\$

$= \dfrac{2(-3 \± i\sqrt{2})}{2}\\\\=-3 \± i\sqrt{2}$

2) 2x² - 16x = 50

Divide the whole equation by 2

x² - 8x = 25

Divide the coefficient of x (i. e 8 ) by 2 = 8/2 = 4, Now add 4 to both sides of the equation

x² - 8x + 4 = 25 + 4

x² - 2*4*x + 2² = 29

(x - 2)² = 29

Take square root both side

$x - 2 = \± \sqrt{29}\\\\x = 2 \± \sqrt{29}$

8 0

3 years ago

[20pts] A service facility charges a $20 fixed fee plus $25 per hour of service up to 6 hours, and no additional fee is charged

irga5000 [103]

Answer:

Step-by-step explanation:

The function of a continuous random variable, whose integral over an interval provides the likelihood that the value of the variable is just inside the same interval while The cumulative distribution function (FX) provides the possibility that the random variable X is not up to or equal to a particular amount x. the formula for calculating it is: Summing the values for every one of the outcomes less than or equal to x will give the solution.

The step by step explanation to this question are in the athached images below

6 0

3 years ago

Solve the system of equations below. 3/+4,/9-12 = 17 2v1 +3,11+52 = 18 -V5-VT-12 = -6

diamong [38]

Answer: -6 You answered your own question-

8 0

4 years ago