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3 years ago

IF YOU GET IT RIGHT THeN YOULL GET BRAINLIEST

Mathematics

2 answers:

vlada-n [284]3 years ago

8 0

Answer:

-51

Step-by-step explanation:

Sauron [17]3 years ago

6 0

Answer:

Step-by-step explanation:

c=27 d=-24

| -24 -27 |

|-51|

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80 POINTS!!!!!!!

sergij07 [2.7K]

Answer:

12 percent

Step-by-step explanation:

you can see on the graph that the charged percentage of capacity changes from 40 to 50 in 5 minutes. then the increase in 6 minutes will slightly more than 10 percent.

The linear rate is (10%)/(5 min) = 2%/min, so in 6 minutes it will be

(2%/min)x(6 min) = 12%

This calculation is consistent with our observation from the graph.

Every 6 minutes, 12 percent is added to the capacity.

5 0

2 years ago

How do you determine if terms are like terms? Be specific

Talja [164]

Like terms have to have the same variables and the variables have to have the same powers.

3x and 6x are like terms.
3x and 6y are not.

4y^2 and 7y^2 are like terms.
4y^3 and 7y^6 are not.

2xy and 5xy are like terms.
2xy^2 and 5x^2y are not
2xy^2 and 5xy are not.

3 0

3 years ago

Each tile measures 3 in. in length and 3 in. in width. what are the perimeter and area?

adoni [48]

Answer:

Perimeter= 12 Area= 9

Step-by-step explanation:

5 0

3 years ago

A population of scores has µ = 50 and σ = 5. If every score in the population is multiplied by 3, then what are the new values

PilotLPTM [1.2K]

Answer:

The new mean = 3 × (the old mean) = 150

The new standard deviation is also = 3 × (The old standard deviation) = 15

Step-by-step explanation:

µ = 50 and σ = 5

The mean is the sum of variables divided by the number of variables.

Mean = (Σx)/N = µ = 50

x = each variable

N = number of variables

If each variable changed to 3x

Mean becomes

Mean = (Σ(3x))/N = 3 (Σx)/N = 3 × µ = 3 × 50 = 150.

The standard deviation is the square root of variance. And variance is an average of the squared deviations from the mean.

The standard deviation measures the rate of spread of the data set around the mean.

Standard deviation = σ = √[Σ(x - µ)²/N]

x = each variable

µ = mean

N = number of variables

If each variable changed to 3x

Recall µ changed to 3µ

Standard deviation = σ = √[Σ(3x - 3µ)²/N]

σ = √[Σ 3² (x - µ)²/N] = √[(3²)Σ(x - µ)²/N] = 3×√[Σ(x - µ)²/N] = 3 × σ = 3 × 5 = 15

If every score is multiplied by 3, it is logical to reason that the average of the new set of numbers also is 3× the old average.

And the new set of numbers spread out similarly around this new mean, only that the new space of spread is now 3× the old one.

5 0

3 years ago

6. Find the variance and standard deviation for the given data using the formula. Round your answer to one more decimal place th

Thepotemich [5.8K]

Answer and Step-by-step explanation:

Variance is the measurement of the spread bewteen the numbers of the data set and can be calculated by the formula:

σ² = ∑(x - ⁻x)² / n

1) With the data, find its mean (⁻x) by adding all the values and dividing the sum by total number of elements the data has;

2) Subtract each value of the data to the mean;

3) Square the result of the subtractions;

4) Add the squares;

5) Divide the sum by the total number of elements of the set;

6) The result is the Variance (σ²);

Standard Deviation is the measure of how far the values of the data set are from the mean and it is the square root of Variance:

σ = $\sqrt{(variance)^{2}}$

So, to calculate standard deviation, you just take the square root of the variance.

6 0

4 years ago