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2 years ago

I need help on this 5x+x-4

Mathematics

2 answers:

Alla [95]2 years ago

8 0

Answer:

6 − 4

Hope this helps!!

stepladder [879]2 years ago

6 0

Answer:

6 x − 4

Step-by-step explanation:

have a great day :D

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Rich deposited money into a bank account that earned 2.5% simple interest each year. After 2 years, he had earned $14.65 in inte

photoshop1234 [79]

we know that

The simple interest formula is equal to

$I=Prt$

where

P is the Principal amount of money to be invested

I is the amount of money in interest

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=2\ years\\ I=\$14.65\\r=0.025$

substitute in the formula above and solve for P

$14.65=P(0.025)(2)$

$P=14.65/[(0.025)(2)]$

$P=\$293$

therefore

the answer is

$\$293$

5 0

2 years ago

Read 2 more answers

Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Bingel [31]

Answer:

We need a sample size of at least 719

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when $M = 0.3, \sigma = 4.103$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$0.3 = 1.96*\frac{4.103}{\sqrt{n}}$

$0.3\sqrt{n} = 1.96*4.103$

$\sqrt{n} = \frac{1.96*4.103}{0.3}$

$(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}$

$n = 718.57$

Rouding up

We need a sample size of at least 719

6 0

2 years ago

Please help i'm desperate!!

Leya [2.2K]

I’m not sure maybe if there was an imagine I’d be able to answer this question.

6 0

2 years ago

The ratio of in-state to out-of-state visitors to the amusement park was 4 to 3. If there were 14,000 visitors to the park, how

exis [7]

Answer:

6000 people

Step-by-step explanation:

Given the ratio of in-state to out-of-state visitors to the amusement park was 4 to 3, the total ratio will be 4+3 = 7

Total visitors in the park = 14,000 visitors

Number of people that were out of state = 3/7 * 14000

Number of people that were out of state = 3 * 2000

Number of people that were out of state = 6000

Hence there were 6000 people out of state.

8 0

2 years ago

I’m stuck on this question plz help

Elza [17]

Answer:

3(n-8)

Step-by-step explanation:

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2 years ago