All categories

3 years ago

Tell whether each equation represents a direct variation. if so, identify the constant of variation.

Mathematics

1 answer:

Ivenika [448]3 years ago

7 0

Answer:

1. Not a direct variation

2. Direct variation (constant= -4)

3. Direct variation (constant= -1)

Step-by-step explanation:

A direct variation is a function of the type

y = k*x, where k can be any real number

First case

1. y=4x+9

The term 9 interferes with the expression (it creates an offset for the value)

2. 2y=-8x

It is a direct variation, y = -4x

3. x+y=0

It is a direct variation, y = -x

You might be interested in

A rock is dropped from the edge of a 550 foot cliff. It's position above the ground at any given time (t) is modeled by the func

Gemiola [76]

S(5) = -16*(5)*2 + 550 = 390

you just replace t with 5

3 0

3 years ago

Read 2 more answers

A car salesperson receives a 7% commission per car sold. How much commission would the salesperson receive when selling a car fo

Natali5045456 [20]

Answer:

$1680

Step-by-step explanation:

To find 7% of 24000, convert 7% to a decimal and multiply. Percent means per hundred, 7% is 7/100 is .07

.07 × 24000

= 1680

7 0

2 years ago

Find mEC.<br> 5x - 27)<br> (2x - 5)<br> D

UNO [17]

Answer:

Arc EC = 58°

Step-by-step explanation:

First, find the value of x.

m<D = ½(arc EC) => Inscribed Angles Theorem

Substitute

2x - 5 = ½(5x - 27)

Multiply both sides by 2

2(2x - 5) = 5x - 27

4x - 10 = 5x - 27

Collect like terms

4x - 5x = 10 - 27

-x = -17

Divide both sides by -1

x = 17

Find arc EC:

Arc EC = 5x - 27

Plug in the value of x

Arc EC = 5(17) - 27 = 85 - 27

Arc EC = 58°

4 0

3 years ago

A density graph for all of the possible times from 50 seconds to 300 seconds

vazorg [7]

Answer: D. The probability of a time from 75 seconds to 250 seconds.

Step-by-step explanation:

We know that a density curve graph for all of the possible values from a to b can be used to find the the probability of the values from a to b .

Given: A density graph for all of the possible times from 50 seconds to 300 seconds.

Then it can be used to find the the probability of a time in the range from 50 seconds to 300 seconds.

From all the given option only option D gives the interval which is lies in the above range.

i.e A density graph for all of the possible times from 50 seconds to 300 seconds can be used to determine the probability of a time from 75 seconds to 250 seconds.

8 0

2 years ago

Which equation can be used to represent the statement?

MaRussiya [10]

Answer:

1/2-7=1.5

Step-by-step explanation:

you're welcome

6 0

3 years ago