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CaHeK987 [17]
3 years ago
12

Substitute teachers with Silvergrove School District get paid by the day, although subs with teaching credentials earn a differe

nt amount than subs without credentials. Yesterday, 6 non-credentialed subs and 4 credentialed subs taught in the district. That cost the district $678. Today, 11 non-credentialed subs and 3 credentialed subs taught, receiving $866 from the
district. How much do subs get paid?

subs with credentials get paid $ per day,
Subs without credentials get paid $
per day.​
Mathematics
1 answer:
Firdavs [7]3 years ago
3 0

Answer:

subs with credentials get paid $87 per day. subs without credentials get paid $55 per day.

Step-by-step explanation:

let x be the cost subs with credential get paid per day and y be the cost subs without credential get paid per day

so we get

4x + 6y = 678 \\ 3x + 11y = 866

using simultaneous equation by substitution method you get x=87 and y=55

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Answer:

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Step-by-step explanation:

These equations are in the standard form of a line. We can convert to the slope-intercept by solving for y.

3x-4y=28\\-4y=28-3x\\\frac{-4y}{-4} =\frac{28-3x}{-4} \\

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We can now convert the second equation.

4x+10y=20\\10y=20-4x\\\frac{10y}{10}=\frac{20-4x}{10}

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We can compare slopes and y-intercepts. The first equation has m=3/4 and b=7. The second has m=-2/5 and b=2. They are intersecting lines. This eliminates A and B. The answer based on the information given is likely D.


5 0
3 years ago
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MA_775_DIABLO [31]

Answer:

x = -1

Step-by-step explanation:

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4 years ago
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3 years ago
A square and an equilateral triangle have the same perimeter.  Each side of the square is 2 less than the side of the triangle. 
Sladkaya [172]

Answer:

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Answer:

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