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Andreas93 [3]
4 years ago
8

Also need help with these two

Mathematics
1 answer:
cricket20 [7]4 years ago
4 0
7. 2+15=17
85/17=5
5x15=75
5x2=10
Answer is 75 for students and 10 for chaperones

8. 1624/112=14.5
Answer is 14.5 hours
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Median AM and CN of △ABC intersect at point O. What part of area of △ABC is the area of △AON?
iogann1982 [59]

Answer:

The area of △AON is one-sixth part of △ABC.

Step-by-step explanation:

Let the total area of △ABC be x.

Median divides the area of a triangle in two equal parts.

Since AM are CN are medians, therefore the area of △ACN, △BCN, △ABM and △ATM are equal, i.e., \frac{x}{2}.

The intersection point of medians is called centroid of the triangle. A centroid divides the median in 2:1.

Since CN is median and O is the centroid of the triangle, therefore CO:ON is 2:1.

Draw a perpendicular on CN from A.

\frac{\text{Area of }\triangle ANO}{\text{Area of }\triangle ACN}=\frac{\frac{1}{2}\times ON\times h}{\frac{1}{2}\times CN\times h}=\frac{1}{3}

Therefore the area of △AON is one-third of △ACN.

\text{Area of }\triangle ANO=\frac{1}{3}\times\text{Area of }\triangle ACN

\text{Area of }\triangle ANO=\frac{1}{3}\times\frac{x}{2}

\text{Area of }\triangle ANO=\frac{x}{6}

The area of ANO is \frac{x}{6}. Therefore the area of △AON is one-sixth part of △ABC.

8 0
3 years ago
Michael has 14 video games that he no longer plays. Five of the video games do not work. If he wants to sell the working video g
AleksandrR [38]

Answer:108 dollars

Step-by-step explanation:14-5= 9 working video games. 9×12=108.

6 0
4 years ago
Read 2 more answers
David bought a 20 ounce bottle of soda. How many quarts of soda are in the bottle?
Debora [2.8K]

Answer:

The answer is B. 5/8 quarts

Step-by-step explanation:

1 ounce is equal to .03125 quarts so to find the amount of quarts, you multiply 20 times .03125 to get .625 or 5/8.

7 0
4 years ago
Adonis bought a pair of shoes that were on sale for 25% off. If Zakee paid $120 for the shoes, how much money did he save, compa
Alekssandra [29.7K]

Answer:

56.25%

Step-by-step explanation:

not 100% sure

5 0
3 years ago
Find an expression which represents the difference when (2x − 6) is subtracted
Sloan [31]

Answer:

-2x + 8

Step-by-step explanation:

(2x - 6) is subtracted from (7 - 5).

First term that into an equation.

Because our first term is being subtracted from our second one, our equation is written as:

(7 - 5) - (2x - 6).

Simplify the first term by subtracting:

7 - 5 = 2

Now simplify the second term by multiplying 2x - 6 by -1 to get them out of the parenthesis. We do this because there is a negative sign in front of it.

-1 (2x - 6)

-2x + 6

Now our equation is:

2 - 2x + 6

Combine like terms:

2 + 6 = 8

So -2x + 8

(2x - 6) subtracted from (7 - 5) is -2x+8

4 0
1 year ago
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