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2 years ago

What is -1 - (5)((-2) - 1 like I dont know it keeps saying 14 but its not

Mathematics

1 answer:

Alex777 [14]2 years ago

5 0

The value of the expression as given in the task content upon evaluation is; 8.

<h3>What is the value of the expression as given in the task content?</h3>

It follows from the task content that the value of the expression can be determined by means of PEMDAS guidelines as follows;

-1 - (5) (-2) - 1

= -1 -(-10) -1

= -1 +10 - 1

= 8.

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3 years ago

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Sever21 [200]

The answer is y = 12x - 24

Use the form y = mx + b

If the points are (2, 0) and (3, 12) the slope is 12 which gives us m.

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3 years ago

Katelyn invested $1500 into her account which earned interest compounded continuously. After 10 years, she discovered that she h

katrin2010 [14]

Given:

Principal = $1500

Time = 10 year

Amount after interest compounded continuously = $3935.36

To find:

The rate of interest.

Solution:

The formula for amount after continuous compound interest is:

$A=Pe^{rt}$

Where, P is principal, r is the rate of interest in decimal and t is time in years.

Putting $P=1500,A=3935.36,t=10$ in the above formula, we get

$3935.36=1500e^{r(10)}$

$\dfrac{3935.36}{1500}=e^{10r}$

$2.6236=e^{10r}$

Taking ln on both sides, we get

$\ln(2.6236)=\ln e^{10r}$

$0.9645=10r$ $[\because \ln e^x=x]$

Divide both sides by 10.

$\dfrac{0.9645}{10}=r$

$0.09645=r$

The rate of interest in percentage is:

$r=100\times 0.09645$

$r=9.645\%$

Therefore, the required rate of interest is 9.645%.

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3 years ago