2 years ago

Find the missing lengths. If needed, give the answer in simplest radical form.

Mathematics

1 answer:

Bess [88]2 years ago

5 0

Answer: 75, 25sqrt(13), figure out the third

Step-by-step explanation:

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Of the 50 USA states 4 have names that start with letter W.

larisa86 [58]

4 out of 50 is what percent
4/50 is what percent

percent mens parts out of 100
x%=x/100

4/50=x/100
multiply both sides by 100
8=x
answer is 8%

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3 years ago

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17(x+5)=0 solve for x

harina [27]

$17(x+5)=0 \\ 17x+85-85=0-85 \\ 17x=-85 \\ \\ \frac{17x}{17} = \frac{-85}{17} \\ \\ x=-5$

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4 years ago

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49–2ax –a^2–x^2 factor

vampirchik [111]

49–2ax –a^2–x^2

Extract the negative sign

= 49 - (a^2 +2ax +x^2)

Factor using a^2 + 2ab + b^2 = (a+b)^2

= 49 - (a+x)^2

Factor using a^2 - b^2 = (a-b)(a+b)

= ( 7- (a + x)) * (7 + (a + x))

= ( 7- a - x) * (7 + a + x)

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3 years ago

You need to compute the a 90% confidence interval for the population mean. How large a sample should you draw to ensure that the

RSB [31]

Answer:

The sample size required is 102.

Step-by-step explanation:

The (1 - α)% confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

The margin of error for this interval is:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

Given:

σ = 9.2

(1 - α)% = 90%

MOE = 1.5

The critical value of z for 90% confidence level is:

$z_{0.10/2}=1.645$

*Use a z-table.

Compute the value of n as follows:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

$n=[\frac{z_{\alpha/2}\times \sigma}{MOE}]^{2}$

$=[\frac{1.645\times 9.2}{1.5}]^{2}\\=101.795\\\approx102$

Thus, the sample size required is 102.

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3 years ago

Rosa is selling hotdogs, h, for $4 at a fair. She spent $200 on supplies for the sale.

Vika [28.1K]

Answer:

the amount she sells

Step-by-step explanation:

4Xhoe many she sold-200=p

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4 years ago