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3 years ago

Use the regression calculator to compare the teams'

Mathematics

2 answers:

Phoenix [80]3 years ago

6 0

Answer:

The y-intercept of the trend line would be -23.21

mezya [45]3 years ago

5 0

Answer:

its 0.39 lol

Step-by-step explanation:

did it on edge

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Maria's class was having an end of the school year party. The teacher ordered 6 large pizzas which were cut into 8 slices each.

exis [7]

Cool question but i really don’t know let’s hope someone in here can assist with this so you can get the answer

5 0

4 years ago

Read 2 more answers

Deena has 4 pairs of white socks, 3 pairs of black socks, 1 pair of red socks, and 2 pairs of navy socks in her sock drawer. Eac

KIM [24]

Answer:

<u>The probability that Deena will choose a pair of white socks is 4/10 or 40%</u>

Step-by-step explanation:

Let's check the information provided to us to answer the question correctly:

Total pairs or socks Deena has = 10

Pairs of white socks Deena has = 4

Pairs of black socks Deena has = 3

Pairs of red socks Deena has = 1

Pairs of navy socks Deena has = 2

If she pulls a pair of socks out of her drawer in the morning without looking, what is the probability that she will choose a pair of white socks?

Probability of Deena will choose a pair of white socks = Pairs of white socks Deena has/Total pairs or socks Deena has

Replacing with the real values, we have:

Probability of Deena will choose a pair of white socks = 4/10 or 40%

5 0

3 years ago

Can someone help me with this asap

leonid [27]

1) 18

2)15

3) 32

4) 15

5) 28

6 0

3 years ago

Read 2 more answers

The absolute minimum of <img src="https://tex.z-dn.net/?f=f%28x%2Cy%29%20%3D%20x%5E%7B2%7D%20%2B%204y%5E%7B2%7D%20-4y" id="TexFo

Dmitriy789 [7]

On the line segment $x=2$ , $f$ depends only on $y$ :

$f(2,y) = g(y) = 4y^2 - 4y - 4$

Find the critical points of $g$ .

$\dfrac{dg}{dy} = 8y - 4 = 0 \implies y = \dfrac12$

At this critical point, we have

$g\left(\dfrac12\right) = f\left(2,\dfrac12\right) = 3$

Check the value of $f$ at the endpoints of the line segment.

$f\left(2,0\right) = 4$

$f\left(2,2\right) = 12$

So we have

$\min\left\{f(x,y) \mid x=2 \text{ and } 0 \le y \le 2\right\} = \boxed{3} \text{ at } (x,y) = \left(2,\dfrac12\right)$

7 0

1 year ago

A freight train takes 18 hours to travel the same distance that an express train travels in 15 hours. The rate of the express tr

Eva8 [605]

<span>The rate of the express train is 15 mph faster than the freight train.
Let's grasp onto this piece of information.

The rate at which the freight train goes will be labeled "x" (keep in mind rate is just the speed)

If the freight train has a speed of "x" then the express train which is going 15mph faster than the freight train can be represented as "x + 15mph."

Our result is in HOURS, but our speed is in Miles per Hour (Miles/Hour). Meaning we need to multiply our speeds by some time (t).

Let's set up two equations:
Freight Train: 18 hours * x mph = distance
Express Train: 15 hours * (x mph + 15mph) = distance

They are both the same distance so we can set the two equations equal to each other like this:

18 hours * x mph = 15 hours * (x mph + 15mph)

That right side is a bit of a thorn in our side, so let's simplify it by multiplying all the terms in the parenthesis by 15 hours (keep in mind the hours in the units cancel out).

18 hours * x mph = 15x miles + 15 * 15 miles
18 hours * x mph = 15x miles + 225 miles

Let's simplify the left side (</span> $\frac{miles}{hour}*hour = miles$ )

18x miles = 15x miles + 225 miles

Get all the "x" terms on one side by subtracting 15x on both sides.

18x - 15x = 225 miles

Simplify

3x = 225 miles

Divide by 3 on both sides to solve for x.
225/3

225 = 25*9

(25*9)/3 = 25*3 = 75mph

So "x" which we chose was the rate of the freight train is 75mph.
Adding 15mph to the freight train rate gives you the express trains rate which is 90mph.

Hope that helped.

8 0

3 years ago