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2 years ago

Simplify and determine the coefficient of (-2/5)(-x)(5y)(-2x).

1 answer:

7 0

When multiplying an odd number of factors,, then that means they will equal a negative. This rule will make this expression change to the following:
- $\frac{2}{5}$ x × 5y × 2x
Now reduce the numbers with 5
-2xy × 2x
Lastly,, calculate the product to get your final answer
-4x²y
This means that your coefficient is -4 and the simplified version of your expression is -4x²y.
Let me know if you have any further questions
:)

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The annual rate of depreciation, x, on a car that was purchased for $9,000 and is worth $4,500 after 5 years can be found using

Zolol [24]

Answer:

Step-by-step explanation:

We know that exponential formula of depreciation

$A=P(1-x)^t$

where

P is the initial amount

x is the interest rate

A is the amount after t years

we are given

The annual rate of depreciation, x, on a car that was purchased for $9,000

so, P=9000

we can plug value it

$A=9000(1-x)^t$

we are given

when x=5 , A=4500

so, we can plug it and solve for x

$4500=9000(1-x)^5$

$\frac{9000\left(1-x\right)^5}{9000}=\frac{4500}{9000}$

$\left(1-x\right)^5=\frac{1}{2}$

$x=-\left(\frac{1}{2}\right)^{\frac{1}{5}}+1$

$x=0.12945$

so, interest rate is 13%

now, we can plug x

and we get

$A=9000(1-0.13)^t$

$A=9000(87)^t$

Graph:

6 0

2 years ago

Read 2 more answers

It costs $19.50 for postage and $5 for insurance to send a one-pound box by Express Mail.

Nadya [2.5K]

294 dollars

Okay so you would take 19.50 and add the 5 dollar insurance giving you 24.50. Then you’d take the 24.50 and multiply it by 12 giving you 294 dollars

Really hope I got that right

6 0

2 years ago

Please help due tomorrow show work

Tju [1.3M]

Little help a negative times a negative is always a positive so the answer is 24 and another hint is a negative times a positive is a negative

5 0

2 years ago

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

LUCKY_DIMON [66]

Answer: d

Step-by-step explanation: when you bring 3 into the square root, it becomes isqrt(63). when you apply i, it makes the number sqrt(-63)

pretty sure I did it right this time