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levacccp [35]
2 years ago
10

Which of these describe a scenario in which the given quantity changes at a constant rate with respect to time? Select

Mathematics
1 answer:
ehidna [41]2 years ago
4 0

Answer: A,B

Step-by-step explanation: the numbers constantly add up only by 218 or 1240 , C and D would not be correct because the rate of change increases as will with the total sum after each period of time

also tiny hint, if you were to draw an X,Y axis graph, A and B would be a straight line while C and D are curved up-wards

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The area of a circle having radius 14 cm is<br> cm.<br> Use *<br> 22<br> 7
DaniilM [7]

Answer:

A=616cm²

Step-by-step explanation:

The question says to use

\frac{22}{7}

for pi, now that we know that we proceed like normal and do the formula like this.

\frac{22}{7}  {r}^{2}  \\\frac{22}{7}  \times 196 \\  = 616

6 0
3 years ago
Simplify<br> ( 3w + 7 ) + ( 2w + 5)
valentina_108 [34]

Answer:

The answer is 5w+12.

Step-by-step explanation:

Combine like terms:

(3w+7)+(2w+5)

5w+12

6 0
3 years ago
3x-5(x-5)= -4+2x+1<br><br> Can someone help me out plzzzz
dusya [7]

Answer:

7

Step-by-step explanation:

So basically first distribute the -5 to the stuff in the parenthesis and then solve.

Hope I helped!! :)

7 0
3 years ago
Y=2(x+4)^2-21<br><br> Convert the equation from vertex form to standard
PSYCHO15rus [73]

Answer:

y = 2x² + 16x + 11

I hope im right... If not reaaally sorry!!

7 0
3 years ago
A company makes candles in the shape of a right cone. The lateral surface of each candle is covered with
julia-pushkina [17]

Answer:

The amount of paper needed = 363.3 in²

Total amount of paper and plastic needed = 564.3 in

Step-by-step explanation:

As the diagram isn't given.

Consider a right cone shown in the ATTACHMENT.

where

r = 8 in

h = 12 in

First find the value of hypotenuse s by using Pythagoras theorem

<h3>Find Lateral Area:</h3>

The amount of paper needed to cover the candle is lateral area, which is given by:

L=\pi\cdot{r}\cdot{s}\\L =\pi\cdot8\cdot14.422\\L=363.3in^2\\

<h3>Find Surface Area:</h3>

Total amount of paper and plastic is the surface area:

S=L+\pi{r}^2\\S=363.3+\pi(8)^2\\S=564.26in^2

S=564.3in^2

7 0
3 years ago
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