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3 years ago

Please help ASAP! Solve for x

Mathematics

1 answer:

kondor19780726 [428]3 years ago

8 0

Answer:

x=6

Step-by-step explanation:

6/24=11/(8x-4)

8x-4=44

x=6

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200 principal, 4% compounded annually for 5 years

OverLord2011 [107]

$\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$200\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases} \\\\\\ A=200\left(1+\frac{0.04}{1}\right)^{1\cdot 5}\implies A=200(1.04)^5\implies A=243.33058048$

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3 years ago

man pays $225 each month into an account to pay his bills. How much does he pay into the account in three years?

romanna [79]

Answer:

$8100

Step-by-step explanation:

There are 36 months in 3 years.

225 x 36 = $8100

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3 years ago

Carson just lit a new candle and then let it burn all the way down to nothing. The

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

L = 10 - 1.25t

t = 1 ⇒ L = 10 - 1.25 = 8.75 inches

t = 2 ⇒ L = 10 - 1.25(2) = 7.5 inches

t = 3 ⇒ L = 10 - 1.25(3) = 6.25 inches

3 0

3 years ago

Solve 3x/2 - 7=x/4 - 2 i know the answer is 4 but how do i solve this

Digiron [165]

First, multiply by 4 on both sides to eliminate the denominator, and you get...
6x-28 =x-8
Subtract x on both sides and add 28...
5x=20
Divide to isolate the variable...
x=4
Hope this helps

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3 years ago

n = 23 H0: σ2 ≥ 66 s2 = 60 Ha: σ2 < 66 The test statistic has a value of _____. a. 24.20 b. 24.00 c. 20.91 d. 20.00

Arada [10]

Answer:

$\chi^2 =\frac{23-1}{66} 60 =20.00$

d.20.00

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

$n=23$ represent the sample size

$\alpha$ represent the confidence level

$s^2 =60$ represent the sample variance obtained

$\sigma^2_0 =66$ represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population variance is less than 66, so the system of hypothesis would be:

Null Hypothesis: $\sigma^2 \geq 66$

Alternative hypothesis: $\sigma^2$

Calculate the statistic

For this test we can use the following statistic:

$\chi^2 =\frac{n-1}{\sigma^2_0} s^2$

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

$\chi^2 =\frac{23-1}{66} 60 =20.00$

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case 23-1=22. And since is a left tailed test the p value would be given by:

$p_v =P(\chi^2$

The best option is:

d. 20.00

8 0

4 years ago