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Paladinen [302]
3 years ago
13

Simple interest. 2700=2200(1+r)^5

Mathematics
2 answers:
kykrilka [37]3 years ago
5 0
Solve your equation step-by-step.

2700=2200(1+r)^5

Flip the equation.

2200(r+1)^5 = 2700

Divide both sides by 2200.

2200(r+1)^5 / 2200 = 2700 / 2200

(r+1)^5=27/22

Solve Exponent.

(r+1)^5=27/22

((r+1)5) ^1/5 = (27/22)^1/5 (Raise both sides to power)

r+1=1.041809

r+1−1=1.041809−1(Subtract 1 from both sides)

r = 0.041809

Check answers. (Plug them in to make sure they work.)

r = 0.041809 (Works in original equation)

Afina-wow [57]3 years ago
5 0
2700=2200(r+1)^5\\\frac{27}{22}=(r+1)^5\\\sqrt[5]{\frac{27}{22}}=\sqrt[5]{(r+1)^5}\\\frac{27}{22}^\frac{1}{5}=r+1\\r=\frac{27}{22}^{0.2}-1\\r=1.0418-1\\r=0.0418

r = 0.0418
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x = 25.8^{o} and y = 51.4^{o}

Step-by-step explanation:

Known that he sum of angles on a straight line is 180^{o}. From the diagram;

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x + 3y = 180^{o} ................ 1

Also,

2x + x + 2y = 180^{o}

3x + 2y = 180^{o} .............. 2

Using the elimination method, multiply equation 1 by 3 and equation 2 by 1

3x + 9y = 540 ............ 3

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7y = 360

y = \frac{360}{7}

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6 0
3 years ago
What is the equation and the answer?
Nastasia [14]

Answer:

30

Step-by-step explanation:

So we begin by assigning variables to each side with:

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EF = y

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Now we start listing a system of equations from what is given:

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Once we solve that with substitution, we get the result of:

x=34

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Since z is the length of DF, the length of DF is 30.

I hope this helped! :D

7 0
3 years ago
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