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Rudik [331]
3 years ago
9

Solve for angle 9x+20

Mathematics
1 answer:
aleksley [76]3 years ago
7 0

Look at the picture.

(9x+21)+(6x-6)=180^o\\\\(9x+6x)+(21-6)=180\\\\15x+15=180\ \ \ \ |-15\\\\15x=165\ \ \ \ |:15\\\\x=11\\\\9x+21=9(11)+21=99+21=120^o

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A pyramid has a square base. The base edge is one-half of the height of the pyramid. If the base edge is 6 units, what is the vo
3241004551 [841]

Answer:

144 units. Hope this helps!

4 0
3 years ago
Alice earns $185 for working 14.8 hours each week. How much money will Alice earn if she increased her hours to 18 1/2 hours per
mars1129 [50]

:)

Step-by-step explanation:

185 is to 14.8 as x is to 18.5

 

185/14.8 = x/18.5

 

x = 185(18.5)/14.8

 

x = $231.25

4 0
3 years ago
What is the domain of the step function f(x) = [2x] – 1?
omeli [17]

You have troubles with domains only if you have:

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6 0
3 years ago
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How long would it take to double your principal in an account that pays 6.5% annual interest compounded continuously? round your
prisoha [69]
It would take 10.7 years.

The formula for continuously compounded interest is:
A=Pe^{rt}
where P is the principal, r is the interest rate as a decimal number, and t is the number of years.

Using our information we have:
A=Pe^{0.065t}

We want to know when it will double the principal; therefore we substitute 2P for A and solve for t:
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Divide both sides by P:
\frac{2P}{P}=\frac{Pe^{0.065t}}{P}
\\
\\2=e^{0.065t}

Take the natural log, ln, of each side to "undo" e:
\ln{2}=\ln{e^{0.065t}}
\\
\\0.6931471806=0.065t

Divide both sides by 0.065:
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\\
\\10.7\approx t
8 0
3 years ago
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What is 2.25 x 10 to the 4 power in standard form?
Elanso [62]

Answer:

Here's how to solve.

Step-by-step explanation:

10 to the 4th power= 10,000

So it would be 2.25*10,000

22,500 would be your answer.

8 0
3 years ago
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