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3 years ago

13

If the balance at the end of eight years on an investment of $630 that has been invested at a rate of 9% is $1,083.60, how much

was the interest?

1 answer:

Contact [7]3 years ago

3 0

The interest is $453.60.

The total amount includes principal + interest. The principal was 630 and the total amount was 1083.60.
1083.60 - 630 = 453.60.

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Can someone help me find x.

Harman [31]

Answer:

Step-by-step explanation:

6x+9=63

6x=63-9

6x=54

x=54/6

x=9

I encourage you to figure out the justification yourself.

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3 years ago

Three lines of crops in a garden form a triangular shape. Strawberries are planted in a 10 ft line and green beans are planted i

Marat540 [252]

Answer:

$p = 19.18$

Step-by-step explanation:

This question is illustrated using the attachment and will be solved using cosine formula

$a^2 = b^2 + c^2 - 2bcCosA$

<em>Let the strawberry side be s, the Green beans be b and the pumpkins be p.</em>

<em />

The cosine formula in this case is:

$g^2 = s^2 + p^2 - 2spCosG$

Where

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$g = 18$

The equation becomes

$18^2 = 10^2 + p^2 - 2 * 10 * p * Cos\ 68$

$324 = 100 + p^2 - 20 * p * 0.375$

$324 = 100 + p^2 - 7.5p$

Collect Like Terms

$p^2 - 7.5p + 100 - 324 = 0$

$p^2 - 7.5p - 224 = 0$

Using quadratic formula:

$p = \frac{-b\±\sqrt{b^2-4ac}}{2a}$

Where

$a = 1$

$b = -7.5$

$c = -224$

$p = \frac{-(-7.5)\±\sqrt{(-7.5)^2-4*1*-224}}{2*1}$

$p = \frac{7.5\±\sqrt{56.25+896}}{2}$

$p = \frac{7.5\±\sqrt{952.25}}{2}$

$p = \frac{7.5\± 30.86}{2}$

$p = \frac{7.5 + 30.86}{2}$ or $p = \frac{7.5 - 30.86}{2}$

$p = \frac{38.36}{2}$ or $p = \frac{-23.36}{2}$

$p = 19.18$ or $p = -11.68$

But length can not be negative.

So:

$p = 19.18$

6 0

2 years ago

Name the property the equation illustrates.

Maslowich

I think it is the associative property of Addition

6 0

3 years ago

Read 2 more answers

PLEASE HELP ME!! I’m already stressed out and I don’t need people getting on here just for points

Arte-miy333 [17]

Answer:

78.5

Step-by-step explanation:

Formula to find area of a circle: A= pi*raduis to the second power

3.14* $5^{2}$

First you square the 5

You do this by multiplying 5 times itself

3.14*25

Then you multilpy 3.14 and 25

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7 0

2 years ago

The period of a pendulum is the time the pendulum takes to swing back and forth one full time. The function I = 0.81t^2 relates

kogti [31]

Answer:

b. t = 10.5 seconds.

Step-by-step explanation:

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5 0

2 years ago