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3 years ago

One of the solutions to the equation 72 - 57– 24 – is 8. What is the other solution?

Mathematics

1 answer:

gulaghasi [49]3 years ago

8 0

Answer:

72-57-24=-9

Step-by-step explanation:

simple subtraction

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Kelby has several she has B birds C cat and F frogs the expression B+(C+F) represents the total number of pets Kelley has what C

zaharov [31]

Answer:

The total number of Cats and Frogs

Step-by-step explanation:

Number of Birds Owned = B

Number of Cats = C

Number of Frogs =F

The expression that represents the total number of pets owned by Kelby

=B+(C+F)

NOTE: SUM/ADDITION = +

Therefore:

The expression C+F represents the total number of Cats and Frogs owned by Kelby.

5 0

4 years ago

for the data values below construct a 95 confidence interval if the sample mean is known to be 12898 and the standard deviation

Volgvan

Answer:

A 95% confidence interval for the population mean is [3315.13, 22480.87] .

Step-by-step explanation:

We are given that for quality control purposes, we collect a sample of 200 items and find 24 defective items.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample proportion of defective items = 12,898

s = sample standard deviation = 7,719

n = sample size = 5

$\mu$ = population mean

Here for constructing a 95% confidence interval we have used a One-sample t-test statistics as we don't know about population standard deviation.

So, 95% confidence interval for the population mean, $\mu$ is ;

P(-2.776 < $t_4$ < 2.776) = 0.95 {As the critical value of t at 4 degrees of

freedom are -2.776 & 2.776 with P = 2.5%}

P(-2.776 < $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ < 2.776) = 0.95

P( $-2.776 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $2.776 \times {\frac{s}{\sqrt{n} } }$ ) = 0.95

P( $\bar X-2.776 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+2.776 \times {\frac{s}{\sqrt{n} } }$ ) = 0.95

95% confidence interval for $\mu$ = [ $\bar X-2.776 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+2.776 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $12,898-2.776 \times {\frac{7,719}{\sqrt{5} } }$ , $12,898+2.776 \times {\frac{7,719}{\sqrt{5} } }$ ]

= [3315.13, 22480.87]

Therefore, a 95% confidence interval for the population mean is [3315.13, 22480.87] .

5 0

4 years ago

Karen earns a salary of $28,600 per year plus a 4.25% commission on sales. Find her to[al earning

Yuri [45]

Her Total earning is $41,775

First step is to determine her commission

Commission=4.25×$310,000

Commission=$13,175

Now let determine her total earnings

Total earning=$28,600+$13,175

Total earning=$41,775

Inconclusion her Total earning is $41,775

Learn more here:

brainly.com/question/13502286

7 0

3 years ago

To pass a test 36% marks are needed out of maximum a student gets 123 marks and is declared failed by 39 marks what are maximum

IgorLugansk [536]

If the student got 123 marks and failed by 39, your first step would be to add the two together, getting 162. This is the amount of marks needed to pass the test.

You would then divide 162 by .36 (.36 is equivalent to 36%). This would result in a maximum of 450 marks.

The maximum marks on this test are 450 marks.

8 0

3 years ago

The figure below shows the ideal pattern of movement of a herd of cattle, with the arrows showing the movement of the handler as

Reika [66]

Answer:

117.75 feet

Explanation:

This the answer that I got and it's correct. I hope this helps.

6 0

3 years ago

One of the solutions to the equation 72 - 57– 24 – is 8. What is the other solution?​

One of the solutions to the equation 72 - 57– 24 – is 8. What is the other solution?