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kogti [31]
3 years ago
12

WILL GIVE BRAINLYEST TO FIRST ANSWER

Mathematics
2 answers:
jenyasd209 [6]3 years ago
4 0

Answer:

1. (ab)c =abc

2. 3y + 4y =7y

3. 6 × 7= 42

I CAN HELP EVRYTIME THANKS!

jeka57 [31]3 years ago
3 0

Answer:

1. (ab)c =abc

2. 3y + 4y =7y

3. 6 × 7= 42

Step-by-step explanation: I hope this is what you want. Hope this help :D

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3 years ago
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On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º.
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Answer:

80

Step-by-step explanation:

every triangle, no matter what shape or size, will have all angles add up to 180 degrees so 180-40-60=80

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3 years ago
What is the value of x in the equation below?
Wewaii [24]
Silver for x

-3 - (-8) - (-2) = x

Switch the equation to make x on the right

x = -3 - (-8) - (-2)

x = 5 - (-2)

x = 7

• A negative minus a negative will always evaluate to a positive.

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Consider functions f and g.<br><br><br><br> Which expression is equal to f(x) ⋅ g(x) ?
zimovet [89]

Answer:

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Step-by-step explanation:

Hope it helps :)

3 0
3 years ago
Somebody please help! Marked Brainliest!
olga nikolaevna [1]

Answer:

Part A:

The surface area of a cylinder is given by

A=  6πr² if h= 2r

Part B:

Total Cost of covering the cylinder = Rate *2πrh + rate*2πr²

Cost of covering only the side = Rate *2πrh

Step-by-step explanation:

Part A:

The surface area of a cylinder is given by

A= 2πrh + 2πr²

Where h= height and radius = r

But we have the height twice as radius so h= 2r

So putting h= 2r we get

A= 2πr(2r) + 2πr²

A= 4πr² + 2πr²= 2πr²(2+1) = 2πr²(3)= 6πr²

Part B:

Cost = Rate * area of the wall + rate * area of the top and bottom

Cost = Rate *2πrh + rate*2πr²

Where area of the top and bottom= πr² +πr² =2 πr²

and area of the side = 2πrh

Multiplying both with the rate and then adding would give the total cost of materials needed to cover the outside of the cylinder and from top and bottom as well.

If  you do not need to cover top and bottom then the expression would be

Cost of covering only the side = Rate *2πrh

Part C:

Already done above.

4 0
3 years ago
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