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3 years ago

5

The mean plus or minus one standard deviation defines the ________ percent probability range of a normal distribution. 82 68 95

50 90

1 answer:

zzz [600]3 years ago

7 0

This is the "empirical rule." Approx. 68% of a data set lie within one standard deviation of the mean.

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Find the slope of the line whose equation is 5y = x - 3.<br><br> -3<br> -3/5<br> 1/5<br> 5

irina1246 [14]

The slope of the line whose equation follows the point-slope form (y=mx + b) is m. Transforming the equation 5y = x - 3 into the point-slope form by dividing the whole equation by 5 results to $y = \frac{1}{5} (x) - \frac{3}{5}$ . The slope, m, is 1/5.

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2 years ago

Which is equal to the cos ÐR?<br>PLEASE HELP ME

inna [77]

Answer: 4/5 = .8

cos adj/hyp of r is .8

HOWEVER...

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2 years ago

Simplify<br> 50(x^2+7x+6)

worty [1.4K]

Distribute $50$ to every term inside the parentheses.

$50\cdotx^2+50\cdot7x+50\cdot6$

Simplify with multiplication.

$\huge\boxed{50^2+350x+300}$

You can't simplify further by adding, so leave the answer as-is.

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1 year ago

Read 2 more answers

A math teacher instructed students to graph the following equations on a coordinate plane. y=2.5x+2 and y=2x+4. If graphed corre

algol [13]

Both the graphical lines will intersect at (4,12)

Step-by-step explanation:

Step 1; We must find the point in the graph where the lines of y=2.5x+2 and y=2x+4 intersect. To find out the intersecting point we must substitute values of x in both equations and see in which co-ordinate they are the same.

Step 2; We plot various values of x on the line governed by the equation y=2.5x+2

For a value of x=1 , y=2.5(1) + 2 = 4.5

For a value of x=2 , y=2.5(2) + 2 = 7

For a value of x= 3, y=2.5(3) + 2 = 9.5

For a value of x= 4, y=2.5(4) + 2 = 12

For a value of x= 5, y=2.5(5) + 2 = 14.5

Step 3; Now we also plot the values of x on the other line governed by y=2x+4

For a value of x= 1, y=2(1) + 4 = 6

For a value of x= 2, y=2(2) + 4 = 8

For a value of x= 3, y=2(3) + 4 = 10

For a value of x= 4, y=2(4) + 4 = 12

For a value of x= 5, y=2(5) + 4 = 14

Step 4; For both lines we must see if any of the values repeat at a particular point. In this case at the point (4,12) repeats for both so that becomes the point of intersection.

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2 years ago

What’s 6.5 inches times 4?

wolverine [178]

Answer:

your answer is 26 inches

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2 years ago

Read 2 more answers