Select all of the following that are quadratic functions. x = 3y2 – 6y + 5, y + 3 = –2 x 2+ 5 , y = 2 x 2 – 8 x + 6, y= –7 x – 4, y – 3 x = 4 x 3 – x2 + 9, y = 5 x(x + 9) – 8, y – 2 x 2 = 3 x – 2 x 2 + 4

Answers

Answer 1

Answer:

The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable and if the highest power in the quation is 2 then it is a quadratic equation.

$x = 3y^(2)-6y + 5$ ----> Quadratic Equation

y +3 = -2x² +5----> Quadratic Equation

$y = 2 x^(2) - 8x + 6$ ----> Quadratic Equation

$y = -7x - 4$ ----> Non Quadratic Equation

$y - 3 x = 4 x^(3) - x^(2) + 9$ ----> Non Quadratic Equation

y = 5 x(x + 9) - 8----> Quadratic Equation

$y - 2x^(2) = 3 x - 2 x^(2) + 4$ ----> Quadratic Equation

Answer 2

Answer:

Answer:

2. y + 3 = -2x^2 + 5

3. y = 2x^2 - 8x + 6

6. y = 5x (x+9) - 8

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Hank bought 5 CDs for $64.75. If each CD cost the same price, how much did each cost?

Answers

64.75/5= $12.96

you simply divide 64.75 by 5

the cost price of machine is 2,50,000.if the rate of depreciation is 10% per year find the depreciation in price of machine after two years.

Answers

Step-by-step explanation:

cost price= 250000

depreciation= 10%

time or years= 2

depreciation price = cost price× depreciation%

2,50,000×10%

2,50,000×10/100

25,000

then 2 years depreciation = 1 year depreciation price ×number of years

25,000× 2

50,000

therefore depreciation price of machine after 2 years is 50,000

What is the minimum possible value of this decimal in 18.6

Answers

This question does not really make sense but if you are asking for the reduction of the fraction of this decimal it would be 18 3/5

Jerry built a chest shaped like a rectangular solid. The base was 14 inches long and 10 inches wide. It had a height of 4 inches. What is the area of the base

Answers

Ignore the height dimension and just multiply the side dimensions to get the base area 14in x 10in = 140in^2

What is the slope of a line that passes through the points (20,74) and (100,90)

Answers

Answer:

m=1/5

Step-by-step explanation:

Formula of the Slope

m = (y2 - y1)/ (x2 - x1)

(x1 , y1) = (20, 74)

(x2, y2) = (100, 90)

put values

m = (90 - 74) / (100 - 20)

m = 16 / 80 = 1/5

Answer:

$\huge\boxed{\bold{slope=(1)/(5)}}$

Step-by-step explanation:

$\text{The formula of a slope:}\n\nm=(y_2-y_1)/(x_2-x_1)\n\n\text{We have two points}\ (20,\ 74)\ \text{and}\ (100,\ 90).\n\n\text{Substitute:}\n\nm=(90-74)/(100-20)=(16)/(80)=(16:16)/(80:16)=(1)/(5)$

Write a multiplication expression without exponents that is equivalent to 3^3

Answers

Final answer:

The equivalent multiplication expression for 3^3 without using exponents is 3 x 3 x 3. Exponentiation is a mathematical operation in which the base number gets multiplied by itself as many times as specified by the exponent.

Explanation:

The expression

3^3

in mathematics is essentially stating that the number 3 should be multiplied by itself twice. So, without using exponents, an equivalent multiplication expression would be

3 x 3 x 3

. This is because exponentiation is a mathematical operation in which the base number gets multiplied by itself for the number of times specified by the exponent.

Learn more about Exponentiation here:

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Answer:

3 times 9

Step-by-step explanation:

3^3 = 3*3*3 = 27 = 3*9

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Write 0.5 as a fraction in simplest form.

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