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2 years ago

Use any model you choose to solve the story problem.

Mathematics

1 answer:

Vlada [557]2 years ago

4 0

1/6 of the shingles/ 2 stacks= 1/12 of the shingles/stack.

There will be 1/12 of the shingles in each stack~

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Line K has a slope of -5. Line j is perpendicular to line k and passes through the point (5, 9). Create the equation for line j.

alisha [4.7K]

Answer:

y = 1/5 x + 8

Step-by-step explanation:

slope of line j: m = -(1/-5) = 1/5

j pass (5,9): (y-9)/(x-5) = 1/5

y-9 = 1/5(x-5) = 1/5 x - 1

y = 1/5 x + 8

7 0

2 years ago

Please please help me with this

kompoz [17]

72degrees that the agngle its easy

3 0

2 years ago

Factor the expression x2 - 49.<br> A. 7(x² – 7)<br> B. 7.(2-7)<br> C. 2+7(2-7)<br> D. (x + 7)(x-7)

NISA [10]

X^2 - 49 = (x + 7)(x - 7) = x^2 - 7x + 7x = 49 = x^2 - 49

6 0

2 years ago

When I see an equation with parentheses, I need to use the Distributive Property.

Doss [256]

The answer is True, trust me on this one

7 0

1 year ago

Suppose the scores on a test given to all juniors in a school district are normally distributed with a mean of 74 and a standard

ivann1987 [24]

Answer:

$\mu -\sigma = 66 , \mu +\sigma = 82$

$\mu -2\sigma = 58 , \mu +2\sigma = 90$

$\mu -3\sigma = 50 , \mu +3\sigma = 98$

And in the figure attached we see the limits with the percentages associated.

Step-by-step explanation:

For this case we know that the random variable of interest is the scores on a test given to all juniors in a school district follows a normal distribution with the following parameters:

$X \sim N(\mu= 74, \sigma =8)$

For this case we know from the empirical rule that within one deviation from the mean we have approximately 68.2% of the data, within 2 deviations from the mean we have 95% and within 3 deviation 99.7%

We can find the limits and we got:

$\mu -\sigma = 66 , \mu +\sigma = 82$

$\mu -2\sigma = 58 , \mu +2\sigma = 90$

$\mu -3\sigma = 50 , \mu +3\sigma = 98$

And in the figure attached we see the limits with the percentages associated.

7 0

3 years ago