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Inga [223]
3 years ago
11

Which of these is the algebraic expression for "3 times the sum of 2 and y?"

Mathematics
2 answers:
max2010maxim [7]3 years ago
7 0

Answer:

the answer is 3(2+y)

Step-by-step explanation:

i commented that first it would not let me answer

]

tatyana61 [14]3 years ago
7 0

Answer:

3(2+y)

Step-by-step explanation:

Sum is addition, and you need to multiply 3 by 2 and 3 by y. It has to be a because it is the only one that does 3(2+y)

B isn’t multiplying it by y

C doesn’t multiply 3 by 2

D doesn’t multiply 3 by y

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Darren has a wooden board that is Three-fifths of a meter long. He cuts the board into 3 equal parts. How long is each section o
Alik [6]

Answer:

Each section of the board is 1/3 or 0.334(0.333333333333) of a meter

Step-by-step explanation:

3/5 divided by 3 is the equation we have to do.

3/5 divided by 3 is also equal to 3/5 times the reciprocal of 3 or 1/3

3/5 * 1/3

3*1 = 3

5*3 = 15

3/15 which can simplify to 1/3. (divide numerator and denominator by 3.)

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8 0
3 years ago
Y=4(1/3)^x growth or decay and why ?
PtichkaEL [24]

Answer:

Decay

Step-by-step explanation:

The equation shown has a ratio(number raised to the power) less than 1, so therefore it is decay. This basically comes from the fact that if you raise a number less than 1 to a power, it become smaller than the number itself.

(In the cases talked about above, we are neglecting negative numbers)

8 0
3 years ago
A right cylinder has a radius of 3 and a height of 12. What is its surface area?
Len [333]

Answer:

90π units²

Step-by-step explanation:

(refer to attached)

Total Surface are off a right cylinder = area of its ends + area of curved surface

Given radius, r = 3 units and height, h = 12 units

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= 2π (9)

=18π units²

Area of curved surface,

= 2πrh

= 2π(3)(12)

= 72π units²

Hence,

Surface area = 18π + 72π = 90π units²

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