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Arte-miy333 [17]
1 year ago
13

Evaluate the expression when c=-7.6 and d=-8.2.2d-7c

Mathematics
1 answer:
horrorfan [7]1 year ago
4 0

You have the following expression:

2d-7c

where

c = -7.6

d = -8.2

reaplace the previous values into the given expression, and simplify, as follow:

2(-8.2)-7(-7.6)=-16.4+53.2=36.8

where it has been taken into account the law of signs.

Then, the anwe

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find the amount accumulated in an account after $9000 is invested for 8 years at a 4% coumpounded monthly
rewona [7]

Step-by-step explanation:

9000(1+0.04/12)^(8*12)

9000(1.0033333)^96

9000(1.3763)

A=12,387.56

5 0
3 years ago
Cami goes scuba diving. She descends 18 feet in 3 minutes. Which expressions represent the average rate at which Cami’s position
julsineya [31]

Answer:

6 ft/min

Step-by-step explanation:

Theres a neat trick to note; whenever you say per think of it as a fancy word for divide, because the label is always gonna be a/b (a per b)

Therefore,

the rate of feet per minute will be the feet divided by the minutes;

18 feet in 3 minutes = <u>18</u>/3 <u>ft</u>/min

Therefore the rate is 6 feet per minute.

<u>IF you need an explanation on what average rate implies:</u>

<em>Note; the word average is not prudent to answer as its extraneous, however if there was more data like "Cami descends 18 ft in 3 min and Nami descends 9 ft in 3 minutes; whats the average rate at which they descend" then you'd have to add the two rates up and divide by two.</em>

Hope this helps :)

7 0
3 years ago
Hey can someone help me with #8? I need to find the rate of change and idk where to get started
AveGali [126]
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5 0
3 years ago
A business owner pays $1,200 per month in rent and a total of $120 per hour in employee salary for each hour the store is open.
trapecia [35]
The breakeven point is that in which the total cost is just equal to the total revenue. In other words, the profit becomes zero. The revenue and cost will be given below.

(1) Total revenue = ($200)x

(2) Total cost = ($120)(x) + 1200

Equating,
     200x = 120x + 1200

Solving for x gives us an answer of 3.33

Hence, the answer is 3.33. 
3 0
4 years ago
When a rate is simplified so that it has a denominator of 1 unit, it is called a(n)_________ rate
Taya2010 [7]
When a rate is simplified so that it has a denominator of 1 unit, it is called a UNIT RATE. Hope this helps!
7 0
3 years ago
Read 2 more answers
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