Please explain how you got the answer

Answers

Answer 1

Answer: $\bf (-y+4)(2y-1)\implies \stackrel{(-y)(2y-1)}{-2y^2+y}~~+~~\stackrel{(4)(2y-1)}{8y-4}\implies -2y^2+9y-4$

notice, just like in any multiplication, you can simply multiply each term of either polynomial times the other, sum them up and then cancel like-terms.

Answer 2

Answer: The answer is −2y^2 + 9y − 4

I simplified by multiplying -y and 2y, 4 and 2, 2y and 1, and -y and -1 which simplified again is the answer above.

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What is 8/5+ (-1/3)

Answers

Answer:

19/15

Step-by-step explanation:

19/15 is the answer

Find the slope of the line passing through the points (5, 4) and (5, -5)

Answers

Answer:

NO Slope

Step-by-step explanation:

slope of the line passing through the points (5, 4) and (5, -5)

slope = y2 - y1 = -5 - 4 = -9

x2 - x1 5 - 5 0

see attached.

in this graph of a line x = 5, no matter what the value of y is.

the horizontal change is 0 and the vertical change is any y value

therefore, there is NO Slope

Find the value of x so that the function has the given value
f(x) = 4x -3; f(x) = 33

Answers

Answer:

x = 9

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 4x - 3

f(x) = 33

Step 2: Solve for x

Substitute: 33 = 4x - 3
Isolate x term: 36 = 4x
Isolate x: 9 = x
Rewrite: x = 9

Write 2.11111... as a fraction.

Answers

Answer:

19/9

Step-by-step explanation:

x=2.1 repeating

10x=21.1 repeating

subtract x from 10x and you get 9x=19

divide by 9 on both sides of the equal sign to get x=19/9

What is the area, in square centimeters, of the shape below?

Answers

Answer:

21.46 cm squared

Step-by-step explanation:

3.8x5.8=21.46

Final answer:

The area of a shape can be calculated by multiplying its dimensions. Given a rectangle with length 0.6238 cm and width 6.6 cm, you would multiply these figures to get an area of 4.1 cm².

Explanation:

To calculate the area of a shape in square centimeters, you need to know the dimensions of the shape. For example, if you have a rectangle, you would multiply its length by its width to get the area. If the length was 0.6238 cm and the width was 6.6 cm, the area would be 0.6238 cm x 6.6 cm = 4.11708 cm². However, we often round to two significant figures, so the area would be 4.1 cm². Remember that area is expressed in square units, so for centimeters, the area would be in square centimeters.