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Ivenika [448]
4 years ago
9

There are 250 students taking band, chorus, or both. If there are 180 students taking band and 60 students in both band and chor

us, how many students are only in chorus? (Hint: First find out how many students are only in band.)
Mathematics
1 answer:
katrin2010 [14]4 years ago
8 0

I think your answer here would be 70.


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a farmer is buying fencing to surround a square field of area 3600m^2. What length of fencing does he need to buy?
kirill115 [55]

Answer:

240 m

Step-by-step explanation:

The area of a square field is 3600 m².

We need to find the length of fencing he needs to buy. It means we need to find the perimeter of the field.

The area of a square field is given by :

A = side²

So,

s=\sqrt{3600} \ m\\\\s=60\ m

Length of fencing = perimeter

= 4(s)

= 4(60)

= 240 m

So, he would need to buy 240 m of fencing.

8 0
3 years ago
la. There is 1/3 gallon of water in a 3-gallon container. What fraction of the container is filled write as a fraction​
ahrayia [7]

1/3 of a gallon divided by 3 gallons = 1/9

6 0
3 years ago
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A line parallel to one side of a triangle divides the other two sides proportionally true or false?
Stella [2.4K]

Answer:

true

Step-by-step explanation:

Triangle Proportionality Theorem - 'If a line is parallel to one side of a triangle and intersects the other two sides, then it divides the other two sides proportionally'. Hence, the given statement is true

8 0
3 years ago
Find two positive nontrivial solutions of x^2-Ny^2=1 when N is 15, 7, or 99
Pavel [41]

Hello,


if n=15: (4,1),(31,8),(244,63)


if n=7: (8,3),(127,48),(2024,765)


if n=99: (10,1),(199,20),(3970,399)


(Pell 's equation)


Download xls
8 0
3 years ago
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If someone travels 20km in 30mins, what is their speed?
scoundrel [369]
You are given a distance of 20 kilometers and time of 30 minutes. You are required to find for the speed of the travelling object. The equation for speed is distance over time. Speed is a scalar quantity. It tells you the direction of the travelling object. The solution in this problem is,  

Speed = distance/time
Speed = 20 kilometers / 30 minutes
<u>Speed = 2/3 kilometers per minute or 0.667 kilometers per minute</u>
<span>Therefore, the speed of the object is 0.667 km per minute.</span>
4 0
3 years ago
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