MATHEMATICS HIGH SCHOOL

Salve by substitution

Answers

Answer 1

Answer:

Solve 3x-8y=-26 for x

Add 8y to both sides

3x-8y+8y=-26+8y

3x = 8y-26

Divide both sides by

3x/3 = 8y-26/3

x = 8/3 y + -26/3

Substitute 8/3 y + -26/3 for x in -5x+6y = 14

-5x+6y = 14

-5(8/3 y + -26/3 ) +6y = 14

Simplify both sides of the equation

-22/3 y + 130/3 = 14

Add -130/3 to both sides

-22/3 y + 130/3 + -130/3 = 14 + -130/3

-22/3 y = -88/3

Divide both sides by -22/3

-22/3 y / -22/3 = -88/3 / -22/3

Substitute 4 for y in x= 8/3 y + -26/3

x= 8/3 y + -26/3

x = 8/3 (4) + - 26/3

Simplify both sides of the equation

x = 2

Answer : x = 2 and y = 4

I hope that's help my friend !

Please if you have any question just asking and I will do my best to help you understand it .

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A ball is dropped from a height of 12 feet and returns to a height that is one-half of the height from which it fell. The ball continues to bounce half the height of the previous bounce each time. How far will the ball have traveled when it hits the ground for the fourth time?

Answers

1 st hit=12 ft
2nd hit=2*6=12 ft
3rd hit=2*3=6 ft
4th hit=2*1.5=3 ft
total distance=12+12+6+3=33 ft

Prime or composite 52

Answers

52 is composite
prime can be divided evenly only by 1, or itself
but 52 can divided by 2,4,13, etc...
hope it helps

If it is prime, it cannot be split in 2 numbers that multiply to equal it. Look at the last number of the number to get a hint first. The last number of 52 is a 2. If you recall, any number that ends ina 2 or 0 can be divided by 2:

52
/ \
2 26
/ \
2 13

There the number is fully factored.

Hurrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Answers

Answer:

77 180-26=154 sence its iscosolice dived that by 2 154/2=77

Step-by-step explanation:

if brainiest is earned its greatly apprieciated

Answer:

i think its x= 18 degrees but i dont know so i apologize if its wrong

Step-by-step explanation:

If f(x)=x^2+3x-10, then f(10)=?

Answers

Answer:

f(10) = 120

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = x² + 3x - 10

f(10) is x = 10

Step 2: Evaluate

Substitute: f(10) = 10² + 3(10) - 10
Exponents: f(10) = 100 + 3(10) - 10
Multiply: f(10) = 100 + 30 - 10
Add: f(10) = 130 - 10
Subtract: f(10) = 120

Tom conducted a drawing competition at school. He bought 5 boxes of colored pencils and spent $5.25 on drawing paper. However, more contestants entered than he expected, and he had to buy 2 more boxes of colored pencils. The total cost of the paper and pencils was $82.95. Identify the equation and solution that would help to find the cost of each box of pencils.

Answers

82.92 - 5.25 = 77.67
77.67 divided by 8 =
$9.70 per box

How to expand and simplify (2x+3y)(x-y)

Answers

(2*x+3*y)*(x-y) this is expanded form

Multiply (2x)(x-y). Then Multiply (3x)(x-y). After that, you have to add the two. If you want it to be simplified, add the x together, and then add the y together. :)

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