MATHEMATICS MIDDLE SCHOOL

What are the domain and range of the function {(3, 1), (5, –1), (9, –1), (2, 7), (–4, 1)}? A.
Domain: {3, 5, 9, 2 }; Range: {1, 7}

B.
Domain: {3, 5, 9, 2, –4}; Range: {1, –1, 7}

C.
Domain: {1, –1, 7}; Range: {3, 5, 9, 2, –4}

D.
Domain: {1, 7}; Range: {3, 5, 9, 2 }

Answers

Answer 1
Answer: B.... the x is the Domain and the y are the values that the x map to (Range)

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9j+34j

Answers

the answer is 43j you just have to add them together
9j+34j = 43j
43j simplifies to 43, since you already added both j's together.

Identify the coefficient, variable, and exponent of 3y.

Answers

Answer:

the coefficient is 3, the variable is y and the exponent is 1.

Step-by-step explanation:

the coefficient is always the number, it can stand alone, or have multiple variables attached. The variable is the letter in an equation, they also can stand alone or follow a coefficient. The exponent is not shown, but if you were to multiply y once, it would equal y.

Hope this helps.

Using quarters, dimes, nickles and pennies how to make $1.53 in 12 coins

Answers

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Hey can u help me please here is the question. A piece of lumber is 4.625 feet long. Which mixed number is equivalent to 4.625

Answers

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37 ÷ 8 = 4 5/8

A bike is on sale for $135. It has been marked down 20%. What was the original price of the bike?

Answers

Answer:

$168.75

Step-by-step explanation:

if it's narked down by 20% then $135 is 80% of the original price

80 = 135

100 = x

80x = 100×135

x = $168.75

A bike is on sale for $135. The original price of bike is 135

Solution:

Given that bike is on sale for $ 135

The mark down price is 20 %

We need to find the original price of the bike

Hence we can say that,

Selling price of bike = 135

Mark down price = 20%

Original price of bike = ?

The cost price is given as:

Original price = selling price * (100)/(100 - markup percentage)

By substituting the values we get,

original price = 135 * (100)/(100-20)\n\n= 135 * (100)/(80)\n\n= 168.75

Hence the original price of bike is $ 168.75

Each statement describes a transformation of the graph of f(x) = x. Which statement correctly describes the graph of g(x) if g(x) = -8f(x)?

Answers

Answer:

reflection over the x-axis and a vertical compression by a factor of 8

Step-by-step explanation:

The parent function is given as

f(x) = x

The transformed graph has equation:

g(x) = - 8f(x)

The factor of 8, indicates a vertical stretch.

The negative sign indicates a reflection in the x-axis.

Therefore the transformation is a reflection over the x-axis and a vertical compression by a factor of 8.

Answer: shrunk vertically over the y axis

Step-by-step explanation:
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