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adelina 88 [10]
3 years ago
11

Is the relation a function? If so why or why not? {(-3,2),(-1,0),(1,0),(5,-2)}

Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

Answer:

It's a function

Step-by-step explanation:

Functions can only have one output for each input. And since all the x values for each point are different, there is only one output (y-value) for each input(x-value).

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A chemical company makes two brands of antifreeze. The first brand is 55 % pure antifreeze, and the second brand is 80 % pure an
Likurg_2 [28]

We have 55% and 80% antifreeze.  We need 90 gallons of 75%.  

F - 55% and E - 80%

A) F + E = 90

B) .55 F + .80 E = 67.50 (which is .75 * 90)  Multiplying A) by -.55

A) -.55 F -.55 E = -49.50 (which is -.55 * 90) then adding A) & B)

.25 E = 18

E = 72 gallons of 80% and

F = 18 gallons of 55%

********* DOUBLE CHECK ******************

72 * .80 = 57.60  and 18 * .55 = 9.90

57.60 + 9.90 = 67.50 gallons of antifreeze and we have 90 total gallons

(67.50 / 90) * 100 = 75% correct!

Source: 1728.com/mixture.htm


3 0
3 years ago
X - 3/5 =10 give your answer as an improper fraction
elixir [45]

Answer:

53/5

Step-by-step explanation:

Multiply both sides by 5:      5x - 3 = 50

Add 3 to both sides:                   5x = 53

Divide both sides by 5:                x = 53/5

8 0
2 years ago
Read 2 more answers
Jenna is writing a check to her vehicle registration office for $100.42. How should she pull out this amount in the "written amo
Angelina_Jolie [31]

Answer:

100 42/100

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3 0
3 years ago
Construct a quadrilateral ABCD in which AB = 4 cm, BC = 7 cm, angle A = angle C = 105 degree
Lelu [443]

Answer: see attachment

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

Since A = C = 105° and D = 60°,

then A + B + C + D = 360°

     105° + B + 105° + 60° = 260°

               B + 270° = 360°

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7 0
3 years ago
A person walked x feet and half that length again
hjlf

Answer:

3/2x

Step-by-step explanation:

x feet and half x = x+1/2x or 3/2x

Hope this helps plz hit the crown :D

4 0
2 years ago
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