Mathematics, 17.12.2020 15:10 deena7

PLZ HURRY IT'S URGENT 1. Write an equivalent expression for −4(3x−2y−1).

−12x−2y−1

−12x+8y+4

−12x−8y−4

−12x+8y−4

2. A triangle has lengths measuring 42‾√ cm, 218‾‾‾√ cm, 48‾√ cm. What is its perimeter? Express your answer in simplest terms.

options:

182‾√ cm

1028‾‾‾√ cm

122‾√+218‾‾‾√ cm

102‾√+48‾√ cm

3. The formula for the area of a trapezoid is A=12h(b1+b2).

Solve the formula for b1.

options:

A/2h−b2=b1

2/Ah−b2=b1

2A−2b2/h=b1

2A/hb2=b1

4. Gemma earns $575 a week plus $180 commission for each car she sells. She earned $1835 last week. How many cars did she sell?

options:

She sold 6 cars.

She sold 7 cars.

She sold 8 cars.

She sold 9 cars.

5. For the function f(x) = 12 – 5x, evaluate f(–3).

options:

27

-3

-27

3

6. Which of these is NOT a way to describe the slope of a line?

options:

rise over run

run over rise

the steepness of a line

the rate of change

Answers: 1

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PLZ HURRY IT'S URGENT 1. Write an equivalent expression for −4(3x−2y−1).

−12x−2y−1

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