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Kay [80]
4 years ago
14

3. Simplify the following expression 2a(a+3)-4a4a-7)

Mathematics
1 answer:
LiRa [457]4 years ago
8 0

Answer:

-14a^2+6a-7

Step-by-step explanation:

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Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning.
Sholpan [36]

Answer:

24.2 centimeters

Step-by-step explanation:

for height = f(time)

let x be the value of the height at 28hours

solving linearly

(28 - 15)/(32 - 15) = (x - 19)/(12.2 - 19)

solving we have

13/17 = (x - 19)/6.8

0.7647 = (x - 19)/6.8

cross multiplying,

x - 19 = 5.2

x = 5.2 + 19 = 24.2centimetres

8 0
4 years ago
You roll a blue number cube and a green number cube. Find the probability. P(blue 1 or 2 and green 1)
slava [35]

Answer:

Step-by-step explanation:

1 for both

3 0
3 years ago
A crew has paved 3/4 of a mile of road. If they have completed 50% of the work, how long is the road they are paving?
Sonja [21]
1 1/2 miles is indeed your answer because if 50% of the road is done which was 3/4 of a mile just add another 3/4 of a mile if it’s 50% (50% +50%=100%)
7 0
3 years ago
Algunos numerod irracionales tienen representacion decimal infinta y periodica .<br>​
ANTONII [103]

Answer:Se dice que cualquier número que no se pueda expresar como una razón de dos enteros es irracional. Su representación decimal no termina ni se repite infinitamente, sino que se extiende para siempre sin repetición regular. Ejemplos de números tan irracionales son la raíz cuadrada de 2 y π.

Step-by-step explanation:

3 0
3 years ago
walmart sells the bike he likes for 350 dollars Walmart had the bike on sell for 30% off what is the cost of the bike at Walmart
lara31 [8.8K]

Answer:

$245

Step-by-step explanation:

350× 0.30 = 105 dollars off

350-105 = 245

7 0
3 years ago
Read 2 more answers
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