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Ahat [919]
3 years ago
8

Use properties of addition and subtraction to evaluate the expression. −28−47−12

Mathematics
1 answer:
Brrunno [24]3 years ago
6 0
The answer would be -87 
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melisa1 [442]

<u>Part 1)</u> we have

5x+2y=16 ------> equation A

x+3y=12

x=12-3y ------> equation B

Substitute the equation B in equation A

5[12-3y]+2y=16

60-15y+2y=16

13y=44

y=44/13=3.38

Find the value of x

x=12-3(44/13)=1.85

the best approximation is the point (2.3)

therefore

<u>the answer Part 1) is the option C</u>

(2.3)

<u>Part 2) </u>we have

y=-x-2 ------> equation A

y=3x+2 ------> equation B

equate equation A and equation B

-x-2=3x+2

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x=-1

Find the value of y

y=-(-1)-2=-1

the solution is the point (-1,-1)

therefore

<u>the answer Part 2) is </u>

(-1,-1)


5 0
3 years ago
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Solve this equation using an algebraic method: (x + 4)( x - 4) = 9
Svetradugi [14.3K]
This is the answer that i was going to upload :
the answer is +5(or)-5 because  of root

3 0
3 years ago
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List all the factors of 27.
monitta

Answer:

The factors for 27 are 1,27,3,9

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What is the domain of the function shown in the graph below?
tigry1 [53]

Answer:

All except one interval [-2,8]

Step-by-step explanation:

Notice that the function, wich an hyperbola, has a vertical asymptote in both -2 and 8 and there is nothing between this two values.

So we will exclude what's between them out of the domain.

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3 years ago
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Please help ASAP please and thank you have a great and blessed day!
goldenfox [79]
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is going to be your answers i believe
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3 years ago
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