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3 years ago

Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original

Mathematics

1 answer:

hichkok12 [17]3 years ago

3 0

Answer:

1.25 hours or 1 hour and 15 minutes

Step-by-step explanation:

Question

Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original height every hour.
Please complete the following sentence by writing the number in the blank. Until the candle has been burning for at least _______ hours, the height of Jennifer's candle will be more than 7 inches.

Candle looses 10% of 8 inches, it equals:

8*0.1 = 0.8 inches an hour

Let x be required time, then:

8 - 0.8x > 7
0.8x < 8 - 7
0.8x < 1
x < 1/0.8
x < 1.25
or 1 hour 15 minutes

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3 years ago

Roger completed a probability experiment with a coin. He flipped the coin 32 times, and it landed on tails eight times. He looke

Vsevolod [243]

This is easy!
The overall amounts of flips is 32, which puts it on the bottom. It gave you a number of times you flipped it and received 8.

Giving us 8/32
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3 years ago

What is the value of x when y=10?

Margaret [11]

Answer:

x would be 1

Step-by-step explanation:

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2 years ago

Selena buys 4 peaches that weigh 1 pound in all. Each peach weigh the same amount. Peaches are on sale for $2.24 per pound. Writ

DENIUS [597]

Answer:

The required equation is

4p = 2.24

And p = 0.56 [ where p is in $]

Step-by-step explanation:

Given that Selena buys 4 peaches that weight 1 pound in all.

Peaches are on sale for $2.24 per pound.

Since the total weight of peaches is 1 pound.

So the price of 4 peaches is $2.24.

Let p be the price of 1 peaches.

Then the price of 4 peaches is $(4×p)

= $4p

According to the problem,

4p = 2.24

$\Rightarrow p=\frac{2.24}{4}$

⇒p=0.56 [ where p is in $]

The required equation is

4p = 2.24

And p = 0.56 [ where p is in $]

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3 years ago

The area of a certain square is 900 square inches. What is the perimeter of this square in inches?

finlep [7]

Answer:

The perimeter of a square with an area of 900 square feet is 120 ft.

Step-by-step explanation:

Calculation of the perimeter of the square:

Since the area is 900 square feet

We know that

The area of square =

So, length of one side should be 30

Now the perimeter should be

= 4(30)

= 120 ft.

Hence, The perimeter of a square with an area of 900 square feet is 120 ft.

4 0

2 years ago

Read 2 more answers