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Nikolay [14]
3 years ago
6

Jake runs the 100-meter dash in

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
4 0

Answer:

400 meters

Step-by-step explanation:

We are told in the question that:

Jake runs the 100-meter dash in

track.

Erika runs a race 400% the distance of Jake's race.

Hence, the length of

Erika's race is calculated as:

400% × 100 - meter

= 4 × 100- meter

= 400 meters

Therefore, Erika's race was 400 meters long.

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Sonya expected to get $60 for her birthday ,but she only got $40.What was the percentage decrease of the amount Sonya recieved?
kow [346]
Are you asking about the percent of change?if so the answer is 33.3%.
7 0
3 years ago
Read 2 more answers
The caloric density of foods is a useful tool when comparing calorie counts. The table shows typical serving sizes for several f
mezya [45]

Answer:

Medium apple < Large hard boiled egg < raisins < cheddar cheese

Step-by-step explanation:

1. Cubic inch cheddar cheese ;

Cal per 100g = cal(c) / grams(g)

Cal per 100g = 69 / 17 = 4.0588cal/g

approximately 4.1cal/g

2. Large hard boiled egg;

Cal per 100g = cal(c) / grams(g)

Cal per 100g = 78 / 50 = 1.56cal/g, approximately 1.6cal/g.

3. Medium apple;

Cal per 100g = cal(c) / grams(g)

Cal per 100g = 72 / 138 = 0.52cal/g

4. Raisins;

Cal per 100g = cal(c) / grams(g)

Cal per 100g = 129 / 43 = 3cal/g

The foods with the lowest density to the highest is,

Medium apple < Large hard boiled egg < raisins < cheddar cheese

6 0
3 years ago
Let F(s) 1.1s + 0.03s2 represent the stopping distance (in feet) of a car travelling at s miles per hour. Calculate F(60) and es
Alinara [238K]

Answer:

F(60) = 3666 feet

Estimated Increase in Stopping Distance: 123.1 feet

Actual Increase in Stopping Distance: 122.1 feet

The cost of producing 3000 bagels is $1036.5

The Estimated cost of the 3001st bagel is $1036.736.

The actual cost of the 3001 st bagel is  $1036.737.

Step-by-step explanation:

F(s) = 1.1s + s²

F(60) = 1.1(60) + (60)²

         = 66 + 3600

F(60) = 3666 feet

To find the estimate increase in stopping distance, differentiate the function  to get F'(s) and then find F'(61)

F'(s) = \frac{dF(s)}{ds} = 1.1 + 2s

F'(61) = 1.1 + 2(61)

F'(61) = 123.1 feet

If speed is increased from 60 to 61, we can find the actual increase by finding F(61) and then subtracting F(60) from it.

F(61) = 1.1(61) + (61)²

F(61) = 3788.1 feet

Increase = 3788.1 - 3666

Increase = 122.1 feet

F(60) = 3666 feet

Estimated Increase in Stopping Distance: 123.1 feet

Actual Increase in Stopping Distance: 122.1 feet

C(x) =  300 + 0.25x - 0.5 (\frac{x}{1000})³

C(3000) = 300 + 0.25(3000) - 0.5 (3000/1000)³

             = 300 + 750 - 13.5

C(3000) = $1036.5

The cost of producing 3000 bagels is $1036.5

To estimate the cost of the 3001st bagel, we need to differentiate the function and then find the increase in price at the 3001st bagel. The answer then needs to be added to C(3000). So,

C'(x) = 0.25 - 0.5*3 (x/1000)²/1000

C'(3001) = 0.25 - 0.5*3 (3001/1000)²/1000

C'(3001) = 0.236

C(3001) = C(3000) + C'(3001)

            = 1036.5 + 0.236

C(3001) = $1036.736

The Estimated cost of the 3001st bagel is $1036.736.

C(3001) = 300 + 0.25(3001) - 0.5(3001/1000)³

             = 300 + 750.25 - 13.5135

C(3001) = $1036.737

The actual cost of the 3001 st bagel is  $1036.737.

5 0
3 years ago
Maureen bought a coat. She was excited because it was on sale, so she paid $15.25 less than the original price. She paid $48.75
irga5000 [103]

Answer:

$33.50 for coat, 5.5 hours

Step-by-step explanation:

For the coat, since it was on sale, then it would be $48.75-$15.25=p=$33.50.

If the temperature drops 4 degrees every hour, if t dropped 22 degrees, then you would do 22 divided by 4, to find out how many hours it had dropped for. 22 divided by 4=h=5.5 or 5 1/2.

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3 years ago
1.95(6.2-3x)-4.81=-18.46x
Citrus2011 [14]

Answer:cdcdhfhhfhfhrhrhjrrjFtc h HD HD ( fxyfjtjtt

Step-by-step explanation:

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4 years ago
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