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jekas [21]
2 years ago
8

Explain in your own words how to do the following: "Write an equation in point-slope form of the like through the given points.

(1, 4) and (2, 7)"
Mathematics
2 answers:
vitfil [10]2 years ago
8 0

Answer:

y-4 = 3(x-1)

Step-by-step explanation:

First you will need to find the slope of the two points.

You can do this by using the slope formula:

m=(y_{2}-y_{1} ) /(x_{2}-x_{1})

Which would equal :

\frac{7-4}{2-1} =\frac{3}{1} =3

You would also have to know what point-slope form is:

y-y_{1}=m\left(x-x_{1}\right)

Now insert your points, and the slope.

y-4 = 3(x-1)

nata0808 [166]2 years ago
4 0

Answer:

y-4=3(x-1)

Step-by-step explanation:

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11 A freezer was set at -4.5°F then lost power for 2 hours. In that
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-0.8⁰F

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6 0
3 years ago
If the heights of 300 students are normally distributed with mean 68.0 inches and standard deviation 3.0 inches, how many studen
Lunna [17]
Given:
μ = 68 in, population mean
σ = 3 in, population standard deviation

Calculate z-scores for the following random variable and determine their probabilities from standard tables.

x = 72 in:
z = (x-μ)/σ = (72-68)/3 = 1.333
P(x) = 0.9088

x = 64 in:
z = (64 -38)/3 = -1.333
P(x) = 0.0912

x = 65 in
z = (65 - 68)/3 = -1
P(x) = 0.1587

x = 71:
z = (71-68)/3 = 1
P(x) = 0.8413

Part (a)
For x > 72 in, obtain
300 - 300*0.9088 = 27.36

Answer: 27

Part (b)
For x ≤ 64 in, obtain
300*0.0912 = 27.36

Answer: 27

Part (c)
For 65 ≤ x ≤ 71, obtain
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Answer: 204

Part (d)
For x = 68 in, obtain
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3 0
3 years ago
Match the expressions with the nonpermissible replacements for y
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<em>\frac{-1}{4} _B_</em>

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<em>_B_ \frac{y(y+5)}{4y+1}</em>

<em>_C_ \frac{5y^{2}-6y+1 }{-5(y-1)}</em>

<em>_D_ \frac{y^{2}-y-6 }{-2(y+7)}</em>


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Answer:

336 ft²

Step-by-step explanation:

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then we subtrac  , areas of door, closet and windows

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Then area to paint    378  -  42   =  336 ft²

4 0
3 years ago
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