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Ber [7]
2 years ago
12

Help plzzzzzzzz will give brainliest

Mathematics
2 answers:
timofeeve [1]2 years ago
4 0

Answer:

78.4

Step-by-step explanation:

You add them all up and divide by however many numbers there are.

AveGali [126]2 years ago
4 0

Answer:

78.4

Step-by-step explanation:

To find the mean of something, you need to add all the values together, then divide the sum by the number of numbers there are.

The sum of all the numbers is 784, and there are 10 numbers.

So, the equation you need to solve is:

784 / 10 = ?

This equals 78.4, so the mean is 78.4.

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Given {27,15,3,-9,...} find a11
coldgirl [10]

Answer: -21, -33, -45

Step-by-step explanation:

each next number is being subtracted by 12 so

4 0
3 years ago
Read 2 more answers
How many variables are in the following expression 3x+4y+z
arsen [322]

Answer:

3

Step-by-step explanation:

8 0
2 years ago
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30 points and Brainliest!!
diamong [38]
Thats easy .


the 2 figures aren't the same because they're both not the same size and one 
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3 0
2 years ago
1. What is a perfect square? 2. What is the square root of 4x²? 3. What is the square root of 25? 4. Factor 4x² + 20x + 25.
Ulleksa [173]

Answer:

Step-by-step explanation:

1) A perfect square is a whole number which is a product of a smaller whole number and itself. Examples of perfect squares are

4(2 × 2)

9(3 × 3)

16(4 × 4)

25(5 × 5)

36(6 × 6)

2) Square root of 4x² is 2x(product of square root of 4 and square root of x²)

3) square of 25 is 5

4) 4x² + 20x + 25

The general formula for solving quadratic equations is expressed as

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 4

b = 20

c = 25

Therefore,

x = [- 20 ± √(20² - 4 × 4 × 25)]/2 × 4

x = [- 20 ± √(400 - 400)]/8

x = [- 20 ± 0]/8

x = - 20/8

x = - 2.5

3 0
3 years ago
when full the gas tank of a car holds 15 gallons. it now contains 12 gallons. what percent represents how full the tank is?
Masteriza [31]

Hello!

to find the percent of a whole, use this equation here:

(remaining) / (total) = X

X * 100 = %

in this case:

12 / 15 = 0.8

0.8 * 100 = 80

your answer is 80%

I hope this helps, and have a nice day!

5 0
2 years ago
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