2 years ago

1. Which expression is equivalent to the given expression? * -0.25 (84 – 32n) - n

1 answer:

7 0

Hi! Multiply -0.25 by the inner numbers.

-0.25 times 84 = 21
-0.25 times -32n = -8n

Then take the -n and add that
21 -8n - n

-8n - n (or -1n) = -9n

therefore, answer would be a) 21 - 9n

You might be interested in

The number of bacteria in a certain culture doubled every hour. If there were 30 bacteria present in the culture initially, how

vichka [17]

Answer:

The number of bacteria after $8th$ will be $3840$

Step-by-step explanation:

Given the initially 30 bacteria present in the culture.

Also, the number of bacteria got doubled every hour.

So, using the equation

$A=A_0r^{n-1}$

Where $A$ is number of bacteria after $n$ hours.

$A_0$ is bacteria present initially.

$r$ is the common ration, in our problem it is given that bacteria doubles every hour. So, $r=2$

And $n$ is the number of hours. In our problem we need amount of bacteria at the end of $8th$ hours. So, $n=8$

Plugging values in the formula we get,

$A=30(2)^{8-1}\\A=30\times 2^7\\A=30\times 128\\A=3840$

So, number of bacteria after $8th$ will be $3840$

3 0

3 years ago

You earn $20.00 per hour at your job. If you get a 10% raise at the end of each year, what will your hourly rate, h, be after 8

love history [14]

R is the rate (10%)
C=20, begiing rate
T=time=8

so

h=20(1+0.10)^8
h=20(1.1)^8
h=42.8718
ronnd

$42.87

D is answer

4 0

3 years ago

Whats the distance between coordinates (-6,8) and (-6,-3)

insens350 [35]

Answer:

there away from eachother for 5 spaces.

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Show work 14.7 x 11.361=

Yanka [14]

Add two 0's to 14.7 making 14.700

3 0

3 years ago

Blitzkrieg is the term used to describe Germany's?

Andreyy89

“lightning” warfare with tanks used to end a fight swiftly.

5 0

3 years ago

Read 2 more answers