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Alenkinab [10]
3 years ago
13

Plsss help me I don’t understand!!

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

11

Step-by-step explanation:

in the "score" section all you do is add all them up. And because there is a negative for ALL the numbers, all you do is add a negative after you add all the SCORES

You might be interested in
8 times the sum of 2 and 15
Hitman42 [59]

Answer:

136

Step-by-step explanation:

15 plus 2 is 17,then multiplied by 8

3 0
3 years ago
The legs of a isosceles right triangle both measure 10 inches find the length of the hypotenuse
Artist 52 [7]

Answer:

Hypotenuse = 14.1421 inches (rounded off to four decimal values)

Step-by-step explanation:

The legs of an isosceles triangle both measure 10 inches

Since the triangle is a right triangle,

We apply the Pythagorean Theorem to find the height of the hypotenuse

a² + b² = c²

a = 10 inches, b = 10 inches and (c) is the hypotenuse whose value we don't know.

So; 10² + 10² = c²

c² = 100 + 100

c² = 200

c = \sqrt{200} = 14.1421356237 inches

The hypotenuse is 14.1421 inches (answer rounded off to four decimal values)

7 0
3 years ago
Please help as soon as possibly with this math question will give brainlyest
vovikov84 [41]
This is the answer for ur question

5 0
3 years ago
A chemical company makes two brands
Paladinen [302]

Answer:

16 bags for the first(30% pure) and 64 bags of the second(80% pure)

Step-by-step explanation:

If they are mixed in a ratio of x bags to y bags

(0.3x+0.8y)/(x+y) = 0.7

0.3x + 0.8y = 0.7(x+y)

Multiply both sides with 10

3x + 8y = 7(x+y)

4x = y ——(1)

x + y = 80 ——(2)

Solve simultaneously

x + 4x = 80

5x = 80

x = 16 bags

y = 4x = 64 bags

6 0
3 years ago
You are the coach of a basketball team that is currently looking for new players. One of the criteria for selection as a player
Sedaia [141]

Answer:

C = 75 in

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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.

Assume that the height of all people follows a normal distribution with a mean of 69 in and a standard deviation of 2.9 in.

This means that \mu = 69, \sigma = 2.9

Calculate the cut-off height (C) that ensures only people within the top 2.5% height bracket are allowed into the team.

This is the 100 - 2.5 = 97.5th percentile, which is X when Z has a pvalue of 0.975, so X when Z = 1.96.

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

1.96 = \frac{X - 69}{2.9}

X - 69 = 1.96*2.9

X = 74.7

Rounded to the nearest inch,

C = 75 in

3 0
2 years ago
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