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Grace [21]
3 years ago
11

Given the system of linear equations:

Mathematics
1 answer:
IgorLugansk [536]3 years ago
7 0

Answer:

(1,6)

Step-by-step explanation:

To solve by substitution, rearrange -x+y=5 to y=x+5 and substitute it into 4x+y=10.

4x + (x+5) = 10

4x+x+5=10

5x+5=10

5x=5

x=1

Now substitute x = 1 back in to find y.

y= (1) + 5

y=6

Solution is (1,6)

Verify substituting both values into each equation in to verify true.

-x+y=5

-(1)+6 = 5

-1+6=5

5=5 True

4(1)+6=10

4+6=10

10=10 True

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3 years ago
Can you help me? Please explain how you got it!
julia-pushkina [17]

Answer:

B.

Step-by-step explanation:

First we must find the x and y intercepts for y = -2x - 4. The y-intercept is -4, since it is b in y = mx + b, but you can also find it by plugging in zero for x:

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4 0
4 years ago
Simplify:-6+{14+2[60-9(1+3)]}
yuradex [85]
1 + 3 = 4;
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3 years ago
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The variable z is inversely proportional to x. When x is 16, z has the value 0.875. What is the value of z when x= 21?
ziro4ka [17]
For z and x to be inversely proportional, there must be some constant k such that

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21z=14\implies z=\dfrac{14}{21}=\approx0.667
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3 years ago
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