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Alex777 [14]
3 years ago
9

Statistics:

Mathematics
1 answer:
Dima020 [189]3 years ago
8 0

Answer:

Step-by-step explanation:

a) sub in 600 for 6

600-25/40 =14.375

b) switch x and y

x=y-25/40

Solve for y

40x=y-25

y=40x+25

c)Plug in 2.5 for z(x)

2.5= x-25/40

100=x-25

x=125

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3 years ago
What is the solution of this system of linear equations?
creativ13 [48]

Answer: D

Step-by-step explanation:

Consider the first equation. Subtract 3x from both sides.

y−3x=−2

Consider the second equation. Subtract x from both sides.

y−2−x=0

Add 2 to both sides. Anything plus zero gives itself.

y−x=2

To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.

y−3x=−2,y−x=2

Choose one of the equations and solve it for y by isolating y on the left hand side of the equal sign.

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y=3x−2

Substitute 3x−2 for y in the other equation, y−x=2.

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Add 3x to −x.

2x−2=2

Add 2 to both sides of the equation.

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Divide both sides by 2.

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Substitute 2 for x in y=3x−2. Because the resulting equation contains only one variable, you can solve for y directly.

y=3×2−2

Multiply 3 times 2.

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Add −2 to 6.

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6 0
3 years ago
Read 2 more answers
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pashok25 [27]

Answer:

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Step-by-step explanation:

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3 years ago
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Vinvika [58]

Answer:

Step-by-step explanation:

16 fractions less than one half

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4 0
2 years ago
Read 2 more answers
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