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4 years ago

How do you simplify the expression 6(3-y)

Mathematics

2 answers:

tensa zangetsu [6.8K]4 years ago

7 0

6(3-y)
=(6)(3+-y)
=(6)(3)+(6)(-y)
=18-6y
=-6y+18
Hope this helped :)

Crank4 years ago

5 0

Subtract 3 from y you get 6(-y)
6*y=6y

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Answer: 1/3

Step-by-step explanation:

if you make a fraction 5/15 pizzas and simplify it is is equal to 1/3.

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3 years ago

Wangari plants trees at a constant rate of 1212 trees every 33 hours. Write an equation that relates pp, the number of trees Wan

igor_vitrenko [27]

Answer:

$p=4h$

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Let p be the number of trees Wangari plants, and h be the time she spends planting them in hours.

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4 years ago

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A candle burned at a steady rate. After 33 minutes, the candle was 11.2 inches tall. Eighteen minutes later, it was 10.75 inches

Amiraneli [1.4K]

Answer:

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Step-by-step explanation:

Let the length be represented by:

$L = mt+L_0$

Where $L$ is the length of candle at time $t$

$m$ is the rate at which the candle is burning.

And $L_0$ is the initial length of the candle.

As per the question statement, let us put the given values in the equation.

$11.2 = m\times 33 + L_0 .... (1)\\10.75 = m\times 51+L_0 ..... (2)$

Subtracting (1) from (2):

$0.45 = -18m\\\Rightarrow m = -0.025$

Putting the value of $m$ in the equation (1):

$11.2 = -0.025 \times 33+L_0\\\Rightarrow L_0 = 12.025$

Therefore, the equation becomes:

$L = -0.025t + 12.025$

Now, we have to find the height of candle after 2 hours.

2 hours mean 120 minutes.

$L = -0.025 \times 120 + 12.025\\\Rightarrow L = 9.025\ inches$

Therefore, the height of candle is <em>9.025 inches</em>.

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