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Luda [366]
3 years ago
5

Which expression is a perfect cube? -8x^21y^8 -64x^64y^64 -125x^9y^18 -216x^9y^18

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0

Answer:

The Answer will be D. -216x^9y^18

Step-by-step explanation:

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A whale costs $14700 and depreciates in value by 8% per year. When will the whale be worth $100
sammy [17]

Answer:

x = 60

Step-by-step explanation:

The question is asking

$14,700 * (1 - 8%)^x = $100

$14,700 * (1 - 0.08)^x = $100

$14,700 * (0.92)^x = $100

(0.92)^x = $100/$14,700

log(0.92^x) = log($100/$14,700)

x * log(0.92) = log(0.0068027)

x = log(0.0068027)/log(0.92)

x = 59.85

Since this question is asking in terms of years, we always round up (in this case to 60), as it won't fully be worth $100 by the beginning of the 59th year.

3 0
3 years ago
A model ship is 28 in. by 65 in. Use the scale 1 in. : 1/2 ft to find the dimensions of the actual ship.
vazorg [7]
42 but give closest number cause its different on test i have state answer
7 0
3 years ago
1. f(x) = x2 - 21<br> f(5)
matrenka [14]

Answer:

x=13

Step-by-step explanation:

if you will substitute the value of f(x) with 5, you will get the following equation:

5=2x-21

2x=26/÷2

x=13

(I didn't know what you ment when you wrote x2, is it x square or 2X)

I really hope it was the second one, cause that's how I solved it.

8 0
3 years ago
Which set of equations is enough information to prove that lines a and b are parallel lines cut by transversal f? m∠4 = 110° and
atroni [7]

see the attached figure to better understand the problem

we know that

If a and b are parallel lines

then

m∠1=m∠4 --------> by alternate exterior angles

m∠3+m∠4=180\° --------> by supplementary angles

so

m∠3+m∠1=180\°

therefore

<u>the answer is the option</u>

m∠1 = 110° and m∠3 = 70°



4 0
3 years ago
Read 2 more answers
Meridith runs at a rate of 190 meters per minute. use the formula d= r times t to find how far she runs in 6 minutes.
Mariulka [41]
D= r×t
D= 190×6
D= 1140 meters
6 0
3 years ago
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