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2 years ago

Describe how you would find the sum of 24,36, and 13.

Mathematics

2 answers:

Crazy boy [7]2 years ago

5 0

Sum means add so: 24 + 36 + 13 = 73

taurus [48]2 years ago

4 0

ADD (+) = 73
The definition of sum is adding the numbers together

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A school sing games played 160 games and won 65 percent of them how many games did the team win?

jonny [76]

The team won 104 games
160 * 0.65 = 104

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2 years ago

4x^2-7x=15<br> Solve by factoring and please please please explain or show the work

vodomira [7]

Answer:

x=3 and x=-1.25

Step-by-step explanation:

4x^2-7x=15

subtract 15 from each side:

4x^2-7x-15=0

factor (trying different numbers that the sum is 7 and the quotient is 15)

(2x-6 )(2x+2.5 )=0

2x-6=0 add 6 to each side

2x=6

x=3

2x+2.5=0 subtract 2.5 from each side

2x=-2.5

x=-1.25

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3 years ago

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Mariulka [41]

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6 0

2 years ago

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You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard devia

gtnhenbr [62]

Answer:

$n=(\frac{2.58(58.2)}{1})^2 =22546.82 \approx 22547$

So the answer for this case would be n=22547 rounded up to the nearest integer

Step-by-step explanation:

Let's define some notation

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=58.2$ represent the population standard deviation

n represent the sample size

$ME =1$ represent the margin of error desire

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =+1 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance would be $\alpha=0.01$ and the critical value $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(58.2)}{1})^2 =22546.82 \approx 22547$

So the answer for this case would be n=22547 rounded up to the nearest integer

3 0

3 years ago

A store sells two types of radios. One type sells $87 and the other for $119. If 25 were sold and the sales were $2495, how many

Luba_88 [7]

Answer:

the answer is C: 15

Step-by-step explanation:

87 X 15 = 1305

119 X 10 = 1190

1305 + 1190 = 2495

7 0

2 years ago

Read 2 more answers