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Vesna [10]
3 years ago
6

Malcolm ran the 440-yard and the 220-yard dash at a track meet.There are 3 in one yard. How many total feet did Malcolm run?Esti

mate first. Then check for reasonableness.
Mathematics
2 answers:
Tresset [83]3 years ago
5 0

For this case we have the following conversions:

1 yard = 3 feet

The estimate distance Is:

400yd = 1200feet

200yd=600 feet

Ten, the estimate Is:

1200 + 600 = 1800 feet

The real distance Is:

The total distance in yards is given by:

440 + 220 = 660 yd

Then, let's transform this distance to feet, with the given conversion:

660 * 3 = 1980 feet

The distance traveled is reasonable for a person

Comparing the estimate and the actual answer, the distance malcom Ran Is reasonable.

Answer:

Malcolm ran 1980 feet.

The distance is reasonable.

Zepler [3.9K]3 years ago
4 0
440 x 3 = 1320

220 x 3 = 660

1320 + 660 = 1980, which is your answer.



440 is close to 400, so 400 x 3 = 1200

220 is close to 200, so 200 x 3 = 600

1200 + 600 = 1800



This is a reasonable estimate.
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Tickets to the zoo cost $12 for adults and $8 for children. The school has a budget of $240 for the field trip. An equation repr
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Answer:

18 children

Step-by-step explanation:

Given

240 = 12x +8y

<em>Required (missing part of the question):</em>

<em>Number of children that will be able to go to the zoo if 8 adult tickets are purchased</em>

 

<em>The graph is missing. However, the question can be solved without the graph.</em>

<em />

From the question and equation, we can deduce the following:

  • x represents adults
  • y represents children

So, when 8 adult tickets were sold.

This means

x = 8

Substitute 8 for x in 240 = 12x +8y

240= 12 * 8 + 8y

240= 96+ 8y

Subtract 96 from both sides

240 - 96 = 96 - 96 + 8y

144 =  8y

8y = 144

Solve for y

y= \frac{144}{8}

y= 18

<em>This means that 18 children will be able to go</em>

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Step-by-step explanation:

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Of the flowers in Bella’s garden, 9/12 are tulips. What percent of the flowers in the garden are not tulips? A: 75 B: 25 C: 30 D
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Luigi is an urban planner. As an independent contractor, he charges a $140 fee plus $25 per hour for
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Answer:

Function: y=140+25x

Amount earned for 10 hours of work: \$390

Step-by-step explanation:

Let be "x"  the number of hours worked on a project and "y" the total amount Luigi charges for a project.

Based on the data given in the exercise, you can identify that:

  • $140 is a fixed amount.
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Then, the total amount he charges for a project is the sum of $140 and 25x. This can be represented with the following function:

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3 years ago
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