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seraphim [82]
2 years ago
14

What’s 20-20? I’ll give brainliest who is the 1st to answer.

Mathematics
2 answers:
iris [78.8K]2 years ago
8 0
0





anaksnkskansjckcnalapnf
nignag [31]2 years ago
8 0

Answer:

20 - 20 =0 me trying to get the points lol edit : oh well I couldn't get the points:( lol

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A sphere has diameter 28 cm. If the diameter is divided by 2, what is the effect on the surface area?
spayn [35]

Answer:

The surface area is divided by 4.

Step-by-step explanation:

Surface area of a sphere is 4πr².

When the diameter is 28 the radius is 14. So: 4π(14)² = 784π

If you cut the diameter in half you get 14. The radius is now 7.

4π(7)² = 196π.

784/4 = 196 so divided by 4.

4 0
3 years ago
A basketball coach kept stats for his team in free throw percentage and steals (among others). At the last game, Erin's free thr
Setler79 [48]

Answer:

Due to the higher z-score, she did better in the free throw category.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

She did better in the category that she had the higher z-score:

Free-throws:

Her free throw percentage was 79%, which means that X = 79

The team averaged 87% from the free throw line with a standard deviation of 12, which means that \mu = 87, \sigma = 12. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{79 - 87}{12}

Z = -0.67

Steals:

She had 4 steals, which means that X = 4

Averaged 7 steals with a standard deviation of 3, which means that \mu = 7, \sigma = 3. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{4 - 7}{3}

Z = -1

Due to the higher z-score, she did better in the free throw category.

6 0
3 years ago
20 pts, please help me asap
mrs_skeptik [129]
The answer is W
they cleared out the store the day before with a sale the next day the store only has 32 in their inventory if the sold the same amount until closing that sells 4 TV's per hour which adds up to 8 hours also they loose 4 every hour causeing the inventory line to go downward until sold out 8 hours later
8 0
3 years ago
Pythagorean’s 14 in 15 in x
Flura [38]

Answer:

210x

Step-by-step explanation:

5 0
3 years ago
When using the Distance Formula, the solution is the perimeter of a polygon.<br> true or false?
natali 33 [55]

Answer:

false

Step-by-step explanation:

When solving the distance formula it is the distance from one point to another. If you had a rectangle and used the distance formula from each point then you would have a perimeter

5 0
3 years ago
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