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Natasha_Volkova [10]
3 years ago
13

2. Five students reported the amount of time (in minutes) they spent studying for an AP Statistics test the night

Mathematics
1 answer:
8090 [49]3 years ago
5 0

Answer:

Step-by-step explanation:

a) Standard deviation of 10 mean the fluctuation for values range from +10 to -10 from the mean.

b) Since the sixth student is 50 minutes, which is higher than the mean of 45 minutes, this will bring the over all mean higher that 45 minutes.  Also, since 50  falls within the standard deviation range (35  to 55), this mean the new standard deviation will be smaller than 10.

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Help please i need the answer
lora16 [44]

Step-by-step explanation:

but ... you had already correctly answered the first part.

L² + W² = d²

Pythagoras ...

all you needed to do now was do the calculations. no "brainware" needed ...

30² + 10² = d²

900 + 100 = d²

1000 = d²

d = 31.6227766... ≈ 31.6 units

4 0
2 years ago
-2x3x simplify please
Anvisha [2.4K]

-6x is the answer hope it helps


4 0
3 years ago
At a grocery store, blueberries come packaged in 8-ounce containers for $2.80. At a farmer's market, blueberries cost $4.20 for
Dmitry [639]
Given:
Grocery store: 8 ounces of blueberries = $2.80
Farmer's market : 14 ounces of blueberries = $4.20
1 pound = 16 ounces.

Unit rate: per ounce
Grocery store:      $2.80 ÷ 8 oz = $0.35 per ounce
Farmer's market: $4.20 ÷ 14 oz  = $0.30 per ounce

Unit rate per pound
Grocery store:      $0.35 per ounce * 16 ounces = $5.60 per pound
Farmer's market: $0.30 per ounce * 16 ounces = $4.80 per pound

3 0
3 years ago
Identify the graph of 4x^2+5y^2=20 for T(5,-6) and write an equation of the translated or rotated graph in general form. (pictur
NikAS [45]

Answer:

b. ellipse; 4x^2+5y^2-40x+60y+260=0

Step-by-step explanation:

The graph of 4x^2+5y^2=20 an ellipse because the coefficients of the quadratic terms are not the same.

This ellipse is centered at the origin. If this ellipse is translated  so that its center is now at (5,-6).

Then the translated ellipse will now have equation.

4(x-5)^2+5(y+6)^2=20

We expand to get;

4(x^2-10x+25)+5(y^2+12y+36)=20

4x^2-40x+100+5y^2+60y+180=20

4x^2+5y^2-40x+60y+100+180-20=0

4x^2+5y^2-40x+60y+260=0

6 0
4 years ago
Read 2 more answers
In how many ways can 10 people form couples of two?
maxonik [38]

Answer:

It should be 10 raised to power 2 which is a hundred.

4 0
3 years ago
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