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2 years ago

Find the value of y so that the points (-2,5) and (8y) lie on a line with the slope -1/5

Mathematics

1 answer:

stiv31 [10]2 years ago

7 0

Answer:

y = 3

Step-by-step explanation:

Use the slope formula:

y2 - y1

m = ------------- , which here becomes

x2 - x1

y - 5 -1

m = ------------- = -----

8 - (-2) 5

Solve this for x. Cross multiplication yields:

5y - 25 = -1(10) = -10

Then 5y = 15, and y = 3

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What is the answer to x+y=3

Nadusha1986 [10]

Answer:

(x+y)² =(x+y)(x+y) Then you FOIL (First, outer, inner, last)

(x+y)² =(x+y)(x+y) = xx + xy + xy + yy [and when you combine like terms] = x² + 2xy + y²

(x+y)3 = (x² + 2xy + y²)(x+y) Then you FOIL (First, outer, inner, last)

(x+y)3 = (x² + 2xy + y²)(x+y) = x2x +2xxy + xy2 + x2y + 2xyy + y2y [and when you combine like terms] = x3 + 3x2y+ 3xy2 + y3

Step-by-step explanation:

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2 years ago

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You have just used the network planning model and found the critical path length is 30 days and the variance of the critical pat

joja [24]

Answer:

0.726 is the probability that the project will be completed in 33 days or less.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 days

Variance = 25 days

Standard Deviation,

$\sigma = \sqrt{\text{Variance}} = \sqrt{25} = 5$

We assume that the distribution of path length is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(completed in 33 days or less)

$P( x \leq 33) = P( z \leq \displaystyle\frac{33 - 30}{5}) = P(z \leq 0.6)$

Calculation the value from standard normal z table, we have,

$P(x \leq 33) = 0.726 = 72.6\%$

0.726 is the probability that the project will be completed in 33 days or less.

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3 years ago

Needing help stuck on this.

Verdich [7]

Answer:

Step-by-step explanat

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2 years ago

486 is what percent of 900

gladu [14]

486/900 = .54 = 54%. .......

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2 years ago

Find the product.<br> (x+2)(x−2)=

kaheart [24]

Answer:

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Step-by-step explanation:

Step 1: Write expression

(x + 2)(x - 2)

Step 2: FOIL

x² + 2x - 2x - 4

Step 3: Combine like terms

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3 years ago

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Find the value of y so that the points (-2,5) and (8y) lie on a line with the slope -1/5​

Find the value of y so that the points (-2,5) and (8y) lie on a line with the slope -1/5