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ozzi
2 years ago
12

-7c , -6c , -1c , 4c , 0c , 0c , 3c work out the mean temperature

Mathematics
1 answer:
mixas84 [53]2 years ago
7 0

Step-by-step explanation:

(-7)+(-6)+(-1)=-14

(-14)-3=-11

-11÷7=-1.5714285714286 or -2 if you round too the tenths place

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How much do you have to add to 1,750 m to get 4 m?
Katen [24]

-1746

well, 1750>4, so you'd have to add a negative number.

1750+(-1746)=4.

3 0
3 years ago
Identify the greatest common factor. 20x^5 - 8x^4 +12x^2
Ugo [173]

4x^2 is the greatest commonly factor for these exponents.

Hope this helps you! :)

5 0
3 years ago
F(x)=-3x-2 find f(3)
TiliK225 [7]

Answer:

f(3) = -11

Step-by-step explanation:

f(x) = -3x-2

let x=3 and replace it in the above equation

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4 0
3 years ago
The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 330 grams and a standard deviati
just olya [345]

Answer:

Weights of at least 340.1 are in the highest 20%.

Step-by-step explanation:

Problems of normally distributed samples are 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.

In this problem, we have that:

\mu = 330, \sigma = 12

a. Highest 20 percent

At least X

100-20 = 80

So X is the 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.842.

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

0.842 = \frac{X - 330}{12}

X - 330 = 12*0.842

X = 340.1

Weights of at least 340.1 are in the highest 20%.

3 0
3 years ago
Barney ate 21 M&M's. If he ate 15% of the bag of M&M's, how many were in the bag to start?
natali 33 [55]

Answer:

3.15

i just used the calculater :)

8 0
3 years ago
Read 2 more answers
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