The equation V = -2000t + 23,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $15,000, substitute 15,000 into the equation to find the age of the car.

Answers

Answer 1

Answer:

The care is 4 years old

Step-by-step explanation:

V = -2000t + 23,000

15000 = -2000t + 23,000

15000 - 23000= -2000t (+ 23,000 - 23000)

- 8000 = -2000t

- 8000/-2000 = -2000t/-2000

t = 4


Related Questions

Nick and Monica are paid $41.25 for their work. Nick worked 2.5 hours, and Monica worked 3 hours. They split the money according to the amount of time each of them worked.
Nick and Monica are paid $(Blank) for each hour worked. Nick's share of the money is $(Blank)

Answers

Answer:

BRIANLIEST PLZ

N = 18.75

M = 22.5

Step-by-step explanation:

Need the ratio of money paid to each. We know how the ratio of time is divided so we can use this ratio to find the amount paid.

T = t1 + t2 = 2.5 + 3 = 5.5

r1 =2.5/5.5

r2 = 3/5.5

Nick = r1 * 41.25 = 18.75

Monica = r2 * 41.25 = 22.5

is 28/7 a integer? yes or no

Answers

Step-by-step explanation:

yes this is an integer because it is above the fraction line

Answer:

No, Fractions and decimals are not included in any set of integers.

Hope this Helps! :)

8,100,000 in scientific notation

Answers

Answer: 8.1 x 10 to the 6th power.

Step-by-step explanation:

Carmen owns 8 shares of stock. The total value of her shares went down by $32. What was the change in value?

Answers

9514 1404 393

Answer:

  -$32

Step-by-step explanation:

The value went down by $32.

Expressed as a signed integer, the value in dollars changed by -32.

Find the linear function for f(1) = 3 and f(4) = 0

Answers

Answer:

Step-by-step explanation:

find the common factor of 24 and 48

Answers

Answer:

1, 2, 3, 4, 6, 8, 12, and 24

Greatest common factor is 24

Step-by-step explanation:

Answer:

There are 8 common factors of 24 and 48, that are 1, 2, 3, 4, 6, 8, 12, and 24. Therefore, the greatest common factor of 24 and 48 is 24

Step-by-step explanation:

hope it will help you

A and B are complementary and B and C are supplementary.

9. If mA 48", then mB= ? and mC = ?.

10. If mB 83, then mA = ? and mC = 2.

11. If mC 127, then m28= ? and mA = ?.

12. If mA = 25. than mB= ? and mC = ?.

Answers

Solution :

9. if mA = 48° , then

mB = 90° - 48° = 42°mC = 180° - 42° = 138°

10. if mB = 83°, then

mA = 90° - 83° = 7°mC = 180° - 83° = 97°

11. if mC = 127°, then

mB = 180° - 127° = 53°mA = 90° - 53° = 37°

12. if mA = 25°, then

mB = 90° - 25° = 65°mC = 180° - 65° = 115°

determine the second derivative evaluated at t=0

Answers

If

[tex]M(t) = e^{3(e^t-1)}[/tex]

then using the chain rule, we have

[tex]M'(t) = e^{3(e^t-1)} \times 3e^t = 3e^{3(e^t-1)+t}[/tex]

[tex]M''(t) = 3e^{3(e^t-1)+t} \times (3e^t+1)[/tex]

Then

[tex]M''(0) = 3e^{3(e^0-1)+0} \times (3e^0+1) = 3e^0 \times (3+1) = \boxed{12}[/tex]

Find the discriminate, number of roots and solve the quadratic equation using the quadratic formula -my answers are pribably wrong

Answers

Answers:

discriminant = dnumber of roots = esolutions = g

=================================================

Explanation:

Let's compute the discriminant. Here we have a = 1, b = 1, c = -2

d = b^2 - 4ac

d = 1^2 - 4(1)(-2)

d = 9

The fact that d > 0 tells us we have two different real number solutions.

------------------------

We can use the quadratic formula to solve, or we can factor. I'll use the factor method.

x^2 + x - 2 = 0

(x - 1)(x + 2) = 0

x-1 = 0 or x+2 = 0

x = 1 or x = -2

The two solutions are -2 and 1

Multiply.
-0.5•(-0.4)
...
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. -0.5•(-0.4)
B. The expression is undefined

(Someone please answer)

Answers

Answer:

-0.2 I think .......................

Two quantities x and y are connected by the formula y=7-9x.

a. Find the value of y when x=0.

b. Find the value of x when y=0.​

Answers

We just have to substitute the values and get the answer.

which expressions have a sum of -12 right answer only!!
a. -13+(-1 )
b. 2+ (-14 )
c. -5+17
d. -4+(- 8

Answers

Answer:

B and D

Step-by-step explanation:

2+-14 = -12

-4+(- 8) = -12

because its a negative number it wont go up it will go down

Answer:

[tex]a) - 13 + - 1 = = - 13 - 1 = - 14 \\ b)2 + - 1 4 = 2 - 14 = - 12 \\ c) - 5 + 17 = 12 \\ d) - 4 + - 8 = - 12 \\ b \: and \: d \: represent \: - 12as \: answer \\ thankyou[/tex]

What is the correct expansion for (x+8)^2

Answers

Answer:

Answer: + 16x + 64

Step-by-step explanation:

[tex] {(x + 8)}^{2} [/tex]

double the brackets, to remove the power:

[tex] = (x + 8)(x + 8)[/tex]

open the brackets:

Generally:

[tex]{ \boxed{(a + b)(a + b) = {a}^{2} + 2ab + {b}^{2} }}[/tex]

from our equation given;

a » x

b » 8

substitute in the equation in the box:

[tex](x + 8)(x + 8) = {x}^{2} + \{ 2(x)(8) \} + {(8 )}^{2} \\ \\ = {x}^{2} + 16x + 64[/tex]

Answer:

x² + 16x + 64

Step-by-step explanation:

that is the answer I think

find the slope between (1,16) and (9,9)

Answers

h ehhh everybody vega

Answer:

[tex]slope = \frac{y2 - y1}{x2- x1} \\ = \frac{9 - 16}{9 - 1} \\ = \frac{ - 7}{8} \\ slope = \frac{ - 7}{8} \\ thank \: you[/tex]

Confuse with this problem

Answers

Answer:

[tex]6 \frac{2}{3} [/tex] (second option)

Step-by-step explanation:

attached

70 POINTS!!! SOLVE TO EARN!!!

Answers

Anne: 57
Josh: 75
Claire: 25

Add them all up and you get 157

Answer:

37, 60, 30

Step-by-step explanation:

Ann - a, Josh - j, Claire - c

a = j + 7j = 2ca + j + c = 157

Substitute a and j into last equation and solve for c:

(j + 7) + 2c + c = 1572c + 7 + 3c = 1575c = 150c = 30

Find a and j:

a = 30 + 7 = 37j = *30 = 60

Solve for b
-3(6b + 4) = 2(-5b+10)
b=

Answers

Answer:

b = -4

Step-by-step explanation:

-3(6b + 4) = 2(-5b + 10)

-18b - 12 = -10b + 20

(-18b + 10b) - 12 = (-10b + 10b) + 20

-8b - 12 = 20

-8b (- 12 + 12) = 20 + 12

-8b = 32

-8b/-8 = 32/-8

b = -4

Answer:

x

Step-by-step explanation:

please answer the question above and pick an answer choice from the ones provided

Answers

Answer:

1,2 and 4 are equivalents. 3 is not equivalent

2P-I, mark that one :l

Step-by-step explanation:

Which numbers are factors of 42? Check all that apply.
0 1
2.
O 3
4
06
8

Answers

Answer:

1, 2, 3, 6 are all factors of 42

Sofia bought a desk for $45 that was originally $50 what percentage is the discount?

Answers

I think it’s 55%

Bc 55+45=100

45/50 90% 100-90 = 10

Step-by-step explanation:

10% is correct

If x = 2 , y = 3 and z = 4 , find the value of y2 Z2 -x2​

Answers

Answer:

y²z²-x²

3*3*4*4-2*2

3*16-4

48-4

44

Step-by-step explanation:

* means multiply

Answer:

[tex]here \: we \: want \: to \: find \: {x}^{2} {y}^{2} {z}^{2} \\ x = 2 \\ y = 3 \\ z = 4 \\ then \: {2}^{2} \times {3}^{2} \times {4}^{2} \\ = 4 \times 9 \times 16 \\ = 36 \times 16 \\ = 576 \\ thank \: you[/tex]

Which of the following best describes the algebraic expression 5(x + 2) - 3 ?
A. Five times a number plus two minus three.
B. Three less than five times a number plus two.
C. Three less than five times the quantity of a number plus two.
D. Five times the quantity of a number plus two less than three.

Answers

Answer:

A

Step-by-step explanation:

brackets first according to bodmas

Answer:

C

Step-by-step explanation:

It is not A, that implies that there is no parenthesis needed. Same goes for D.

It is not B, (5x +2)-3

"Three less than" implies that 3 will be subtracted in the end of the equation.

B and C may get mixed up: C includes the phrase "the quantity" which implies the number (x) and two are added before being multiplied by 5.

The sum of 27 and -28 divided by 2.

Answers

Hey there!

The word sum usually means addition in mathematics!

27 + (-28) / 2

= 27 - 28 / 2

= -1 / 2

= -0.5

Answer: -1/2 OR -0.5 (either those should work because they are both equivalent)

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

The sum of 27 & - 28 divided by 2.

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

Okay, so first we need to frame this statement to a numerical expression. It will be :- '27 + (-28) / 2 [sum means to add the 2 numbers, i.e, 27 + (-28). Then we should divide the result by 2 according to the question given.)Now, let's solve it.

[tex] \sf\frac { 27 + ( - 28 ) } { 2 } \\ [/tex]

Subtract 28 from 27 to get -1.

[tex] \boxed{\boxed{ \boxed{ \bf\frac{-1}{2} = \bf- 0.5}}}[/tex]

So, the answer will be - 1/2 in its fractional form or 0.5 in its decimal form.

the area of a rectangle hall is the same as the area of a square field of side 56 m. if the lenght of hall is 112m. find its breadth​

Answers

Step-by-step explanation:

please subscribe to my mom channel please

5
The day's high temperature in Phoenix, Arizona was recorded as 104°F. Use the formula C= 5F- -32) to write 104°F as degrees Celsius.
The day's high temperature written as degrees Celsius is lºc.

(Answer quickly)

Answers

Answer:

40°C

Step-by-step explanation:

Plug in 104° for F. This makes the equation [tex]\frac{5}{9}(104-32)=C[/tex].

Now, simplify.

[tex]104-32=72\\\frac{5}{9} (72)=40\\C=40[/tex]

Hope this helps!

A number to be a rational number that is not an integer but a while number

Answers

Answer:

So coming back to the question; No, there is no rational number that is not an integer but is a whole number. The number is called as a rational number if it can be expressed as p/q where p & q are integers & q is not 0. All negative integers are rational numbers but those are not whole numbers.Jan 1, 2020

Step-by-step explanation:

If I have 500 and have a 6% annual interest how long will it take to get 2000

Answers

Answer:

23.8 years

Step-by-step explanation:

Assuming this is compound interest, we'll use the compound interest formula

A = P(1 + r)ⁿ

A = Final amount (2000)

P = Initial amount (500)

r = Annual interest rate (.06)

n = ?

Our equation will look like this

2000 = 500(1.06)ⁿ

First, divide both sides by 500

2000/500 = (500(1.06)ⁿ)/500

(1.06)ⁿ = 4

Then we have to take the log₁.₀₆ out of both sides

n = log₁.₀₆(4)

n = 23.79132

23 to the power of seven in expanded form?

Answers

Answer:

3404825447

Step-by-step explanation:

3000000000

+400000000

+0

+4000000

+800000

+20000

+5000

+400

+40

+7

Hyo Jin lives in San Diego. She bought a refrigerator for $1,624.99 and when the clerk
calculated the sales tax it came to exactly $142.186625. Round the sales tax to the nearest:
a) penny
b) dollar

Answers

the sales tax should come out to $142.19

Answer:

i live in san diego

Step-by-step explanation:

Help me with this please :'-)

Answers

hiii how are you feeling today

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