3 years ago

Please help asap. Very lost and confused

Mathematics

2 answers:

Ivenika [448]3 years ago

5 0

Look at a torial so you can have help

posledela3 years ago

4 0

The answer will be c

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Will give Brainliest! if right!

quester [9]

B 49 is the correct answer

8 0

3 years ago

An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =

avanturin [10]

Answer:

Step-by-step explanation:

We know that the equation for the depreciation of the car is:

$y=A(1-r)^t$

Where y is the current cost, A is the original cost, r is the rate of depreciation, and t is the time, in years.

We are told that the value of the car now is half of what it originally cost. So:

$y=\frac{1}{2}A$

Substitute this for y:

$\frac{1}{2}A=A(1-r)^t$

We also know that the rate of depreciation is 10% or 0.1. Substitute 0.1 for r:

$\frac{1}{2}A=A(1-0.1)^t$

So, let's solve for t. Divide both sides by A:

$\frac{1}{2}=(1-0.1)^t$

Subtract within the parentheses:

$\frac{1}{2}=(0.9)^t$

Take the natural log of both sides:

$\ln(\frac{1}{2})=\ln((0.9)^t})$

Using the properties of logarithms, we can move the t to the front:

$\ln(\frac{1}{2})=t\ln(0.9)$

Divide both sides by ln(0.9):

$t=\frac{\ln(\frac{1}{2})}{\ln(0.9)}$

Use a calculator. So, the car is approximately:

$t\approx6.6\text{ years old}$

Our answer is D.

And we're done!

7 0

3 years ago

Which statement best describes the solution to the system of equations?

Kryger [21]

Answer:

option a is correct

Step-by-step explanation:

I think

4 0

3 years ago

Your parents stayed at the famous pyramid shaped hotel in Las Vegas. Your parents brought you back a small model of the hotel. T

omeli [17]

1344-
(24x16) x4 = 768
768+ (24+24)= 1344

3 0

3 years ago

Please answer 1/8 - 1/4 (3 - 1/2) + 2/3 And 2/9 - 1/6 (8- 2/3) + 1/2

Neko [114]

Answer:

1/6, - 1/2_____________

6 0

3 years ago