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telo118 [61]
3 years ago
11

Find the circumference of 21cm

Mathematics
1 answer:
hoa [83]3 years ago
6 0
132cm) so so du Di Di xi Fi vi du du du do go
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The isosceles triangle shown has a base of 4 y + 2 and a perimeter of 6 y + 12 .  Which expression represents the length of 1 o
liberstina [14]

Answer:

The expression that represents the length of 1 of the triangle's legs is y + 5

Step-by-step explanation:

An isosceles triangle has two sides equal which are the triangle legs. Let b represent the base of the triangle and l represent one of the triangle's legs. Then, the perimeter, P is given by

P = l + l + b

i.e P = 2l + b

From the question, P = 6y + 12 and b = 4y +2

∴ 6y + 12 = 2l + 4y + 2

6y - 4y + 12 - 2 = 2l

2y + 10 = 2l

∴ 2l = 2y + 10

Then,

l = (2y+10)/2

l = y + 5

Hence, the expression that represents the length of 1 of the triangle's legs is y + 5  

4 0
3 years ago
The function, f(x)=70n-400, models the profit of the instructor of a guitar class per month, where n is the number of students e
zimovet [89]

profit=f(x)

so solve for f(x)=1000

1000=70n-400

add 400 to both sides

1400=70n

divide both sides by 70

20=n

20 students need to be enrolled to make a profit of 1000.00

4 0
3 years ago
What is 20.1000÷300000​
horrorfan [7]
The answer would be .0333 hope this helped
7 0
3 years ago
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maks197457 [2]
Answer:
its c
Step-by-step explanation:
hope this helps !
5 0
3 years ago
I need help I don’t get it will give 20 points if you can tell me the answer lol please and thank you!
alexgriva [62]

Answer:

Butter is a colloid.

Step-by-step explanation:

Butter is an example of a class of colloids called emulsions. An emulsion is a colloidal dispersion of a liquid in either a liquid or a solid.

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