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Lubov Fominskaja [6]
2 years ago
5

Help please! will give brainliest :)

Mathematics
1 answer:
AysviL [449]2 years ago
5 0

8m {}^{3}  - 128m \\ 8m( {m}^{2}  - 16)

By taking common

You might be interested in
Solve the following exponential equations.<br> 10^(3x−5) = 7^x
zalisa [80]

Answer:

x = 2.3202

Step-by-step explanation:

Given equation:

10^{(3x-5)} = 7^x

on taking log both sides, we get

\log(10^{(3x-5))} =\log(7^x)

now,

using the property of log function

log(aᵇ) = b × log(a)

therefore,

we get

(3x-5)log(10) = xlog(7)

now,

log(10) = 1

and

log(7) = 0.84509

thus,

( 3x - 5 ) × 1 = 0.84509x

or

3x - 0.84509x - 5 = 0

or

2.15491x = 5

or

x = 2.3202

4 0
3 years ago
In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati
umka21 [38]

9514 1404 393

Answer:

  3.61 seconds

Step-by-step explanation:

The bird starts 50 feet in the air, so will come down to a height of 40 feet after 3.61 seconds.

We want to solve h = 40.

  40 = -16t^2 +55t +50

  16t^2 -55t -10 = 0

  t = (55 +√(55^2 -4(16)(-10)))/(2(16)) = (55 + √3665)/32 ≈ 3.61060

The bird will be 40 ft above the ground the first time after about 3.61 seconds.

8 0
3 years ago
A phone is regularly priced at $350. If you get it on sale for 15% off, how much do you pay?
Nesterboy [21]
52.5

Explanation:
x/18. 30/100 cross multiply 30*18=5250
5250 divided by 100= 52.5
5 0
2 years ago
Read 2 more answers
A CEO leads a company of 250 employees and wants to conduct a survey.
krek1111 [17]

Answer:

D

Step-by-step explanation:

You would do D because the other options aren't that random. Randomly choosing employees <em>is</em> a random sample and will give you a valid answer.

8 0
3 years ago
Read 2 more answers
Y is directly proportional to x,<br> and y = 45 when x = $600...<br> Find y if x = $1000.
Paul [167]

Answer:

The Answer is: 75.

Step-by-step explanation:

Set up the equation:

45 / 600 = y / 1000

600y = 45 * 1000

600y = 45000

y = 45,000 / 600 = 75.

5 0
3 years ago
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