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77julia77 [94]
3 years ago
13

Charlotte earned a grade of 84% on her multiple-choice math final that had a total of 200 problems. How many problems on the fin

al exam did Charlotte get wrong?
Mathematics
1 answer:
xxTIMURxx [149]3 years ago
8 0

Answer:

Wrong problems = 32

Step-by-step explanation:

Total no of problems = 200

Charlotte earned a grade of 84% on her multiple-choice.

Correct problems,

=\dfrac{84}{100}\times 200\\\\=168

Wrong problems = 200 - correct problems

= 200 - 168

= 32

Hence, there are 32 problems on the final exam Charlotte get wrong.

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You have quarters and dimes that total $2.80. your friends says its possible that the number of quarters is 8 more than the numb
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3 years ago
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Answer:

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6 0
3 years ago
Read 2 more answers
James works as a waiter. He served meals with bills of $23.59, $40.65, &amp;30.50, and $15.86. If his total for tips was 17.67,
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3 years ago
Triangle ABC has vertices A(-3,0) B(0,6) C(4,6). Find the equations of the three medians of triangle ABC
Mariana [72]

Answer:

1.y=-6x+6, y=\frac{6}{5} x+\frac{18}{5}, y=\frac{6}{11} x+\frac{42}{11}

2.y=-\frac{1}{2} x+2\frac{1}{4} , x=2, y=-\frac{7}{6}x+\frac{43}{12}

Step-by-step explanation:

A(−3, 0), B(0, 6), and C(4, 6)

using the midpoint formula: (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}) we can find all of their midpoint which is necessary to complete question 1 and 2

Mid AB=(-1.5, 3), Mid BC=(2, 6), Mid AC=(0.5,3)

Next, we have to find the slope of from the vertex and the midpoint of each side. We use the slope formula: \frac{y_2-y_1}{x_2-x_1}.

You would get -6, 6/5, and 6/11.

Next you substitute in the coordinates for the equation of each for example: y=-6x, you switch in the set of cords AB which is (-1.5, 3). 3=-6(-1.5)+z and find that z=6, so the equation is y=-6x+6. As for the rest, repeat the same process until you find all 3 cords. You should get an answer of y=-6x+6, y=\frac{6}{5} x+\frac{18}{5}, y=\frac{6}{11} x+\frac{42}{11}

For question 2,

The line has to be perpendicular bisector to the midpoint, signifying that it has to split 2 angles into congruent angles and a side into half. In order to do that we need to first find the opposite reciprocal of each side's slope. Which means we need to once again use the slope formula and get the opposite reciprocal by -\frac{1}{slope}. For all the opposite reciprocal slopes you get will be incorporated into the final formulas. That gives us the slopes of -1/2, 0 and -7/6. Then do the same process of matching cords with these incomplete equations and you can find the final equations of y=-\frac{1}{2} x+2\frac{1}{4} , x=2, y=-\frac{7}{6}x+\frac{43}{12}

I hope that helped with your question!! :)

Also I'm an RSM student too and I didn't know how to do them before so I searched it up.

6 0
3 years ago
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