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slava [35]
3 years ago
13

The average sunflower has 34 petals. What is the best estimate of the total number of petals on 57 sunflowers?

Mathematics
1 answer:
stellarik [79]3 years ago
3 0
Your initial instinct would be to solve this problem with this solution. 34 x 57 = 1,938 petals.

However, the word estimate is present; therefore, we have to consider that we need to get the approximate number and not the exact number of petals.

There is a general rule regarding estimation or approximation. You have to round it to the nearest place you have based on. In this problem we round it off to the nearest tens place.

If the number is below 5, you round it down: 34 is rounded down to 30 petals.

If the number is above 5, you round it up: 57 is rounded up to 60 sunflowers.

Thus, your equation would be :  30 x 60 = 1,800 petals (best estimate)


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Derek is training for a half-marathon. His training plan sets his goal for this week at 18 miles with three short runs and one l
Zielflug [23.3K]

Answer:

8.65 miles

Step-by-step explanation:

The total of his short runs are 9.35 so you need to find out how many miles he has left till he reaches 18 miles.

The equation you can use is 9.35 + x = 18 x will equal the number of miles for the long run.

9.35 + x = 18

to isolate x you will subtract 9.35 from both sides.

you will get:

x = 8.65

8.65 miles

5 0
3 years ago
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Daria has 18 coins that are all nickels and quarters. the number of nickels is 3 more than twice the number of quarters. if she
sergij07 [2.7K]
Daria has 12 to 15 nickels because 3x3=9 but u want to double the amount which would be 12 to 15
3 0
3 years ago
A company finds that if they price their product at $ 35, they can sell 225 items of it. For every dollar increase in the price,
Basile [38]

Answer:

Maximum revenue = $8000

The price that will guarantee the maximum revenue is $40

Step-by-step explanation:

Given that:

Price of product = $35

Total sale of items = 225

For every dollar increase in the price, the number of items sold will decrease by 5.

The total cost of item sold = 225 ×35

The total cost of item sold = 7875

If c should be the dollar unit in price increment;

Therefore; the cost function is : [35+c(1)][225-5(c)]

For maximum revenue;

\dfrac{d}{dc}(cost \ function) =0

\dfrac{d}{dc}[[35+c(1)][225-5(c)]]=0

0+225-35× 5 -10c = 0

225 - 175  =10c

50 = 10c

c = 50/10

c = 5

Maximum revenue = [35+c(1)][225-5(c)]

Maximum revenue = [35+5(1)][225-5(5)]

Maximum revenue = (35 + 5)(225-25)

Maximum revenue = (40 )(200)

Maximum revenue = $8000

The price that will guarantee the maximum revenue is :

=(35 +c)

= 35 + 5

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8 0
3 years ago
22) Find the measure of the indicated side. Round the answer to the nearest tenth.
ZanzabumX [31]

The answer should be 41 Inches

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41.0121933088^2=1682

Rounding to the nearest tenth makes it 41 Inches

4 0
3 years ago
Elisabeth reads 1/5 of her book in 1 1/2 hours. Elisabeth continues to read at this pace. How long does it take Elisabeth to rea
djverab [1.8K]

It will take her  5 5/8 hours to read 3/4 of the book

<h3>Ratio and proportions</h3>

Given that Elisabeth reads 1/5 of her book in 1 1/2 hours, this is expessed as:

0.2 of a book = 1.5 hours

In order to determine the time taken to read 0.75 part of the book, we will have:

0.75 of a book  = x

Take the ratios

0.2/0.75 = 1.5/x

0.2x = 1.125

x = 1.125/0.2

x =  5.625

Hence it will take her  5 5/8 hours to read 3/4 of the book

Learn more on ratio and proportion here: brainly.com/question/19994681

6 0
2 years ago
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