All categories

2 years ago

Graph the system of equations on your graph paper to answer the question.

Mathematics

1 answer:

Aneli [31]2 years ago

7 0

I’ll give you the answer later

You might be interested in

The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?

svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

$V(t) = V(0)(1-r)^{t}$

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that $r = 0.16$

$V(t) = V(0)(1-r)^{t}$

$V(t) = V(0)(1-0.16)^{t}$

$V(t) = V(0)(0.84)^{t}$

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

$V(t) = V(0)(0.84)^{t}$

$0.5V(0) = V(0)(0.84)^{t}$

$(0.84)^{t} = 0.5$

$\log{(0.84)^{t}} = \log{0.5}$

$t\log{0.84} = \log{0.5}$

$t = \frac{\log{0.5}}{\log{0.84}}$

$t = 3.98$

The half life of the car is 3.98 years.

7 0

2 years ago

I neeeeeed help really fast, please!! 0 X 0 = ?

Fiesta28 [93]

The answer is zero 0

6 0

2 years ago

Read 2 more answers

Find the area of the sector, rounding your answer to 1d.p. thank you for your help :3<br>

andreyandreev [35.5K]

Answer:

176.7cm^2

Step-by-step explanation:

Area of circle = π ×r^2

π×15^2

and then divide by 4 because it's one quarter of a circle

7 0

2 years ago

What is 2

sergiy2304 [10]

2 3/8 / 1 1/4
= 19/8 / 5/4
=19/8 * 4/5
= 19/10

answer is B 19/10

6 0

2 years ago

Read 2 more answers

What are the real roots of 2x^3-42x-40

malfutka [58]

2x^3-42x-40=0
2x^3-42x=40
2x(x^2-21)=40
a. 2x=40=>x=20
b. x^2=21+40=>x^2=61=>x=+-(radical(61)

7 0

2 years ago