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dsp73
3 years ago
15

Simplify the expression (9 + 2i)(9 − 2i). 81 − 18i 81 + 18i 77 85

Mathematics
1 answer:
Ymorist [56]3 years ago
5 0

Answer:

=85

Step-by-step explanation:

I'm pretty sure I'm correct

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D’Angelo’s Pizza is planning to produce small square pizzas. It will cost them $2.00 to make each pizza, and the company will se
stealth61 [152]

Answer:

Gross profit formula= 3x

x= number of units sold

Step-by-step explanation:

Giving the following information:

Unitary variable cost= $2

Selling price per unit= $5

<u>To calculate the profit earned, we need to use the unitary contribution margin formula</u>. The contribution margin is a product's price minus all associated variable costs (sales- variable costs), resulting in the incremental profit earned for each unit sold.

Unitary contribution margin= 5 - 2 = 3

<u>Now, the profit formula:</u>

Gross profit formula= number of units*unitary contribution margin

Gross profit formula= 3x

x= number of units sold

5 0
3 years ago
The formula for interest is I=Prt. Describe what these letters stand for. Is the formula the same if you are charged interest on
prisoha [69]

Answer:

I stand for interest

P stand for principle

R stand for rate

T stand for time

There are the same.


7 0
4 years ago
(39 points PLZ HELP)Find the sum of a finite geometric series. A ball is dropped from a height of 10 meters. Each time it bounce
erastovalidia [21]

So we need to find the sum of the first 5 terms.

You have told me that the first term is 10 meters, and that r = 0.5 per term.

With this knowledge, we can use the formula s_n=a₁((1-r^n)/(1-r)).

Plugging in the terms that we know...

s₅=10((1-0.5⁵)/(1-0.5))

s₅=10(0.96875/0.5)

s₅=10(1.9375)

s₅=19.375

With s₅, we can determine that the ball has traveled a total of 19.375 meters after 5 bounces.

3 0
3 years ago
Read 2 more answers
(8p - 2) (6p+2) <br><br> help plz
qaws [65]

Answer:

48p^2+2p-4

Step-by-step explanation:

We can use the FOIL method to expand two multiplied binomials. It states that (a+b)(c+d)=ac+bc+ac+bd. The FOIL method stands for First(first terms) outer(outer terms) inner(inner terms) last(last terms).

So, we can expand our binomials now!

(8p-2)(6p+2)=(8p)(6p)-2(6p)+(8p)(2)-2(2)=48p^2-12p+14p-4=\boxed{48p^2+2p-4}

8 0
3 years ago
If a half gallon of milk costs $1.24, what is the cost per pint?
snow_tiger [21]
$0.31 for each pint hope this helps
4 0
3 years ago
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