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4 years ago

Find the unit rate in decimal representation $150 for 22 ft.²

Mathematics

1 answer:

Andreas93 [3]4 years ago

3 0

Answer:

$6.82 per foot

Step-by-step explanation:

To find the unit rate, divide.

150 / 22 ≈ 6.82

Best of Luck!

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If you currently have a (7) in your hand and you were to add two more cards to that (7), but the total sum of the cards is still

Molodets [167]

Answer:

king, queen, jack, ace

Step-by-step explanation:

this depends on what game's rules and scoring you're using, but I'd say the face cards

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3 years ago

A random sample of 130 students is chosen from a population of 4,500 students. The mean IQ in the sample is 120, with a standard

barxatty [35]

Answer:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

Step-by-step explanation:

Information given

$\bar X= 120$ represent the sample mean

$\mu$ population mean (variable of interest)

s=5 represent the sample standard deviation

n=130 represent the sample size

For this case we can't set a margin of error just with a % since they not specify 1.13% respect to something for this case we can omit this value

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=130-1=129$

The Confidence level is 0.99 or 99%, the significance would be $\alpha=0.01$ and $\alpha/2 =0.005$ , and the critical value would be $t_{\alpha/2}=2.614$

And replacing we got:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

3 0

3 years ago

Hudson owns a food truck that sells tacos and burritos. He only has enough ingredients to make 90 tacos or burritos.Write an ine

love history [14]

Answer- b+t=90 (or bb + tt = 90 ignore if this was a mistake)

If we know that 90 is an absolute total, that will go behind the equal sign

?=90;

We know that we can make any mixture of burritos or tacos, but they have to equal up to ninety. As you stated bb= burritos and tt= tacos. (If that is a mistake, instead of putting bb or tt, just put the single letter b or t)

This means our equation would have to have a certain number times burritos and a certain number times tacos that equal 90.

Our equation should look a little like this

(number of burritos ) + (number of tacos) = 90

b + t =90 or with your values bb+tt=90

HOPE THIS HELPS & GOOD LUCK

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2 years ago

Find the slope of the line that passes through the points (2,-20) and (1,-20).

amm1812

Answer:

$\displaystyle m=0$