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2 years ago

9 times a number of 390

Mathematics

2 answers:

maxonik [38]2 years ago

8 0

Answer:

5667

Step-by-step explanation:

LekaFEV [45]2 years ago

7 0

Answer:

3510

Step-by-step explanation:

because you have 390 and you multiply it my 9 so you would get 3510 by 9 times

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BRAINLIST!!! The area of Alex's room is 168 square feet. If his room is a rectangle and one side is 12 feet, how long is the oth

Cloud [144]

Answer:

the missing length is 14 feet.

Step-by-step explanation:

a = L × W

168ft² = 12 × W - divide both sides of the equation by 12

- 168 ÷ 12 = 14

168ft² = 12 × 14

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3 years ago

Emily biked 9 miles in 3/4 hour. Which expression can she use to find her unit rate in miles per hour?

frosja888 [35]

The expression will be 9 x 3/4

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3 years ago

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As a small step to save the environment, Luna came up with an idea for her sweet shop. In exchange for five eclaire boxes, that

svet-max [94.6K]

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Step-by-step explanation:

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3 years ago

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Andrej [43]

Step-by-step explanation:

2 ( 8 - 3c) = 4c - 34

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3 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:

9.025 inches

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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2 years ago