Answer: -1
Explanation:
-a - (-8) + b
-a + 8 + b (because the - - signs cancel out)
-(2) + 8 + (-7)
-2 + 8 - 7 = -1
The error Giovanna made in her calculation is multiplying 7 by 2 and adding with 5/8(step 3)
<h3>Fraction</h3>
Her calculation:
- 7 (2 and StartFraction 5 over 8 EndFraction): 7(2 5/8)
- 7 (2 + StartFraction 5 over 8 EndFraction): 7(2 + 5/8)
- 14 + StartFraction 5 over 8 EndFraction: 14 + 5/8
- 14 and StartFraction 5 over 8 EndFraction: 14 5/8
Her error was multiplying 7 by 2 and adding with 5/8(step 3)
Correct calculation:
7(2 + 5/8)
= 14 + 35/8
= (112+35) /8
= 147/8
= 18 3/8
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Answer:
form an idea of the amount, number, or value of; assess
Step-by-step explanation:
Answer:
Graph the equation by plotting three
points. If all three are correct, the line
will appear.
2y = -x + 2
The equation of the blue line in the given graph is y = -x/2 + 2 .
In the question ,
a line graph is given,
we have to find the equation of the blue line .
to find the equation of line , we need at least two points ,
So , from the graph we can see that the two points from where the blue line passes the graph are (4,0) and (0,2) .
the slope = (2-0)/(0-4)
m = 2/(-4)
m = -1/2
So , the equation of the line passing from the points (4,0) with slope -1/2 , is
(y - y₁) = m(x - x₁)
y - 0 = (-1/2)(x - 4)
y = -x/2 + 2
Therefore , The equation of the blue line in the given graph is y = -x/2 + 2 .
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