3 years ago

Find the mean(x) of the first ten prime number and hence show that sigma( x1 - x)= 0

1 answer:

8 0

Please see the attached work. I'm assuming that you're familiar with sigma notation (I can explain it if you need that), and as a reminder, x with the line over it indicates the arithmetic mean.

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The container that holds the water for the football team is 1/2 full. after pouring in 9 gallons oo water, it is 4/5 full. how m

OLEGan [10]

.5x + 9 = .8x
9 = .3x
x = 30 gallons

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3 years ago

A ____ is a term with a number part but no variable. (WILL GIVE BRAINLIEST) (❁´◡`❁)

Margaret [11]

Answer: it’s a Constant!

Step-by-step explanation:

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3 years ago

What is the y value of the solution to the system of equations given? y=5x-3 3x-2y=27

nignag [31]

Answer:

y = -18

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

y = 5x - 3

3x - 2y = 27

Step 2: Rewrite systems

Define: 3x - 2y = 27
Add 2y on both sides: 3x = 2y + 27
Divide 3 on both sides: x = 2/3y + 9

Step 3: Redefine

y = 5x - 3

x = 2/3y + 9

Step 4: Solve for y

Substitute in x: y = 5(2/3y + 9) - 3
Distribute 5: y = 10/3y + 45 - 3
Combine like terms: y = 10/3y + 42
Subtract 10/3y on both sides: -7/3y = 42
Divide -7/3 on both sides: y = -18

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3 years ago

Please show how you solved it, because i need help.

Mrrafil [7]

Put the dependencies on one side and the unknowns on the other side and divide by 2

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3 years ago

What is the value of x? 30 points if answered

spin [16.1K]

Answer: 20

Step-by-step explanation: They are both equal to each other, so 3x+50=6x-10. Then just solve for x by canceling out both sides.

5 0

1 year ago