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2 years ago

(PLEASE HELPPP!!!)

1 answer:

7 0

I found the value for number 2 and it took some time to like calculate but here it is
$15,250
1.)$14,106.25
2.)$13,048.2812
3.)$12,069.6601
4.)$11,164.4356
5.)$10,327.1029
6.)$9,552.57018
7.)$8,836.12742
8.)$8,173.42
The numbers are the years but the value of the car would be number 8

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Axis of symmetry for f(x) = -2x2 + 20x -42

Ksenya-84 [330]

For the function $f(x)=2x^2 +20x-42$

We can use the formula for the axis of symetry, which is $x= \frac{-b}{2a}$

With the values substituted, we get...

$\frac{-20}{2(-2)} =5$

Therefore the axis of symmetry is $x=5$

8 0

3 years ago

Read 2 more answers

Can someone answer this truthfully

juin [17]

Answer:

1- 4x -7 =29, x= 9

2-x/3 - 8 = 12, x=60

Step-by-step explanation:

4x-7 =29

4x= 29 +7

4x= 36

x= 9

x/3 -8 =12

x/3 = 12+ 8

x/3 = 20

x= 20(3)

x= 60

4 0

2 years ago

a line with a slope of -1/9 passes through point (9,-1). What is its equation in slope intercept form

Elena L [17]

Answer:

$\huge \orange{y = - \frac{1}{9} x} \\$

Step-by-step explanation:

To find an equation of a line when given the slope and a point we use the formula

$y - y_1 = m(x - x_1)$

From the question we have

$y + 1 = - \frac{1}{9} (x - 9) \\ y + 1 = - \frac{1}{9} x + 1 \\ y = - \frac{1}{9} x + 1 - 1$

We have the final answer as

$y = - \frac{1}{9} x \\$

Hope this helps you

4 0

2 years ago

How many different committees of 4 people can be chosen from a group of 21?

sdas [7]

Answer:

There are 21 ways to choose the first person, 20 ways to choose the second, 19 ways for the third and 18 ways for the fourth so the answer is 21 * 20 * 19 * 18 = 143640.

4 0

3 years ago

The weight of an object is equal to 3\4 of its own weight plus 3\4of a pound. What is the weight?

Phoenix [80]

Answer:

The weight of the object is 3 kg.

Step-by-step explanation:

Step 1:

Let object weight be x kg.

Now, as per the available data,

3/4 kg + 3/4 (x kg) = x kg

Step 2:

3/4 (1 + x) = x

1 + x = 4x/3

1 = x (4/3 - 1)

x = 1 / (1/3)

x = 3

Weight of Object is 3 kg.

Step 3:

Let's check if this value satisfies the first equation.

3/4 + 3/4 x 3 = 3/4 + 9/4 = 12/4 = 3

Hence proved.

8 0

3 years ago