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m_a_m_a [10]
3 years ago
12

Simplify the expression 56-2(4+x)

Mathematics
1 answer:
lesya692 [45]3 years ago
5 0

Answer:

48+x

Step-by-step explanation:

56-2(4+x)

56-8+x

48+x

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Equation of a line:
y=mx+c

m = gradient: The difference between two y points and two x points.
m= \frac{\Delta y}{\Delta x}

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You have:
y=\textunderscore\textunderscore \ x + \textunderscore
so you are missing the m and the c.

To calculate m find two y coordinates -you have (12, <u>7</u>) and (0, <u>1</u>)- and subtract them. Then divide this by the subtracted values of the x coordinates -you have (<u>12</u>, 7) and (<u>0</u>, 1)- This gives:

m= \frac{7-1}{12-0}
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To calculate the c, you just see where the line crosses the y-axis. Because you have the point (0, 1), you know that when x=0, y=1. Because x=0 is on the y-axis, you can tell that the line passes through y=1. This makes your c = 1:

c=1

When you plug these values into the equation you get your answer:

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6 0
3 years ago
Evaluate x + y when x = - 18.2 and y = 3.6
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-18.2 + 3.6= -14.6 is the answer to the question
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William got an 85 and an 88 on the first two quizzes. What formula can William use to determine the score he needs on the third
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Answer:

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Step-by-step explanation:

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