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3 years ago

Describe how to model negative 3x + 7 equals 28 with algebra tiles

Mathematics

1 answer:

lana66690 [7]3 years ago

8 0

You will put three x tiles and seven positive tiles

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13. Is the following the graph of a function? Why or why not?

Semenov [28]

No. To test whether a graph is a function or not you do the vertical line test where if a vertical line touches more than one point it is not a function

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3 years ago

Kris has 4 yards of ribbon. it takes 2/3 yard to wrap one package. How many packages can Kris wrap?

Serggg [28]

Answer:

C. 6 packages

Step-by-step explanation:

4 divided by 2/3

=>4x3/2=6

mark me as the brainliest plz

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3 years ago

How many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98

Irina18 [472]

Answer:

$n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67$

So the answer for this case would be n=67 rounded up

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean for the sample

$\mu$ population mean

$\sigma=1400$ represent the sample standard deviation

n represent the sample size

Solution to the problem

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 =400 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 98% of confidence interval now can be founded using the normal distribution. And the critical value would be $z_{\alpha/2}=2.33$ , replacing into formula (b) we got:

$n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67$

So the answer for this case would be n=67 rounded up

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3 years ago

Hailey is making 36 mini- pumpkin pies. Each pie takes 6 ounces of pumpkin. The cans of pumpkin are 2 pounds each. How many can

serious [3.7K]

1 pound = 16 ounces

6 ounces each pie

36 mini pies to make

36 × 6 = 216 ounces needed to make 36 mini pies

216 ÷ 16 = 13.5 pounds
if each can of pumpkin is 2 pounds,
13.5 ÷ 2 = 6.75 so that would be 7 cans of pumpkin

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2 years ago

On a coordinate plane, the y-axis is labeled imaginary and the x-axis is labeled real. Point A is at (negative 3, 2).

torisob [31]

Answer:A,C,E

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers