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cricket20 [7]
3 years ago
12

Can you please help me with this l will give you Brainliest.​

Mathematics
2 answers:
nydimaria [60]3 years ago
6 0

The value of a number increases when its subtracted by a negative. In the expression 5 - -4, since 4 is a negative integer that’s being subtracted, it’s added to the 5 — which would equal 9.

VARVARA [1.3K]3 years ago
3 0

Answer:

9

Step-by-step explanation:

Hello

When you have two negative symbols, you have to multiplied them, so:

-*-= +

+*+= +

+*-=-

-*+ = -

You can to do more research lookin this: "Algebraic operations with symbols" or "The sign´s law"

I attached a illustrative image about this.

Then,

5 - (-4)   <em>(here is with -*- )</em>

5 + 4

9

Best regards

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We know for our problem that P=420 and t=15. To convert the interest rate to decimal form, we are going to divide the rate by 100%: r= \frac{10}{100} =0.1. Since Ruben makes the deposits every 6 months, k=2. The interest is compounded semiannually, so 2 times per year; therefore, k=2.
Lets replace the values in our formula:

FV=(1+ \frac{r}{n} )*P[ \frac{(1+ \frac{r}{n})^{kt}-1 }{ \frac{r}{n} } ]
FV=(1+ \frac{0.1}{2} )*420[ \frac{(1+ \frac{0.1}{2})^{(2)(15)}-1 }{ \frac{01}{2} } ]
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We can conclude that the correct answer is <span>$29,299.53</span>
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