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Reil [10]
3 years ago
5

What is the additive inverse of the complex number -8 + 3i? -8-3i -8+3i 8-3i 8+3i

Mathematics
2 answers:
Nady [450]3 years ago
8 0
The answer is b because the answer is b and the people don’t know how to do it
stich3 [128]3 years ago
6 0

Answer:

No the Answer is C because the other guy is wrong

Step-by-step explanation:

bla bla bla

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A 50-gallon tank is filled with a 40% ethanol solution. How much solution should be drained but and replaced with an 80% ethanol
DIA [1.3K]

How do you create your equations when working on a mixture word problem?

Let's try to think about the general form of a word problem involving mixtures.

In general, we have the following scenario:

a merchant sells two kinds of products (coffee, sweets, etc).

we know the unit prices for both kinds of products and for the final mixture

p

1

US dollars per pound for the first kind of product,

p

2

US dollars per pound for the second kind of product

p

m

US dollars per pound for the mixture

we know the total quantity formed by the mixture of the two products (

q

pounds)

we have to find out the quantities of each product needed to form the mixture

(here we have the variables:

x

denoting the quantity of the first kind of product and

y

denoting the quantity of the second kind of product)

Now, we have sufficient information to work out the equations.

First, we know that the sum of the two quantities is

q

pounds, which gives us the first equation:

x

+

y

=

q

Second, we know that the sale price is the product of quantity and unit price, which gives us the second equation:

p

1

x

+

p

2

y

=

p

m

⋅

q

Now, we have a system of two linear equations that can be easily solved by substitution.

3 0
2 years ago
Pls pls help I no understand
vazorg [7]

Answer: 2p+1.50=11.50

               p = 5.00

<u>Step-by-step explanation:</u>

<em>Note: the tip is calculated on top of the total so this figure is a redherring</em>

<u>2 pancakes</u> <em>plus</em> <u>1 fruit cup</u> <em>equals</em> <u>total bill</u>

          2p       +        1.50          =         11.50

2p + 1.50 = 11.50

<u>      - 1.50 </u> <u> - 1.50  </u>

 2p         = 10.00

<u>÷2          </u>    <u> ÷2       </u>

    p         =  5.00

8 0
3 years ago
Help meeeee this are the last of my mf pointssssss
boyakko [2]

Answer:

y=0.6 x=3.6

dddddddddddddddddd

7 0
2 years ago
Solve for x.<br><br> 7x+15=2x+19<br><br> A)x=9/34<br> B)x=4/9<br> C)x=4/5<br> D)x=20
Rufina [12.5K]
<span>7x+15=2x+19
Subtract 2x from both sides
5x+15=19
Subtract 15 from both sides
5x=4
Divide 5 on both sides
Final Answer: C.) x= 4/5</span>
7 0
3 years ago
Read 2 more answers
A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is
xxTIMURxx [149]

Answer:

The test contains 10 three-point questions and 14 five-point questions.

Step-by-step explanation:

We can substitute a definition of one of the variables by rearranging the first equation.

We set the first equation equal to one of our two variables.

y = 24 - x

Now we substitute this equality into our second equation

3x + 5(24 - x) = 100

4 0
2 years ago
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