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Murrr4er [49]
1 year ago
7

Mark is typing up the final copy of his essay for class. He can type 20 words per minute. If his final essay is 5356 words in le

ngth, how long did it take Mark to finish typing his essay? Round to the nearest minute.
Mathematics
2 answers:
Tcecarenko [31]1 year ago
6 0

Answer:

it would be 250 per minute.

Step-by-step explanation:

SashulF [63]1 year ago
4 0

Answer:

It takes Mark 268 minutes to type 5356 words

Step-by-step explanation:

We can easily solve this using proportion;

let x be the number of minutes that will take Mark to type 5356 words,

20 words    = 1 minute

5356 words= x

Cross multiply

20x = 5356

Divide both-side of the equation by 20

20x/20 = 5356/20

(On the left-hand side of the equation 20 at the numerator will cancel-out the 20 at the denominator leaving us with just x, while the right-hand side of the equation 5356 will be divided by 20)

x = 5356/20

x=267.8

x≈268

Therefore, it takes Mark 268 minutes to type 5356 words

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Students who party before an exam are twice as likely to fail as those who don't party (and presumably study). If 20% of the stu
True [87]

Answer:

The fraction of the students who failed to went partying = \frac{1}{10}

Step-by-step explanation:

Let total number of students = 100

No. of students partied are twice the no. of students who not partied.

⇒ No. of students partied = 2 × the no. of students who are not partied

No. of students partied before the exam = 20 % of total students

⇒ No. of students partied before the exam = \frac{20}{100} × 100

⇒ No. of students partied before the exam =  20

No. of students who not partied before the exam = \frac{20}{2} = 10

Thus the fraction of the students who failed to went partying = \frac{10}{100} = \frac{1}{10}

8 0
2 years ago
Pedro works as a newspaper deliverer. He receives a base pay plus an additional amount per newspaper delivered. Last week, Pedro
guapka [62]
Answer is

<span>g(x) = 2.5x + 25

</span>5 newspapers, 2.5(5) + 25 = 12.5 + 25 = 37.5
20 newspapers, 2.5(20) + 25 = 50 + 25 = 75
9 0
1 year ago
Read 2 more answers
Several friends each had 2/5 of a bag of peanuts left over from the baseball game. they realised that they could have bought 2 f
Reika [66]
Leftover per friend times number of friends=total left over
2/5 times number of friends=2
times both sides by 5/2
number of friends=10/2
number of friends=5

5 friends
6 0
2 years ago
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You pull out the plug from the bathtub. After 40 seconds, there are 13 gallons of water left in the tub. One minute after you pu
SCORPION-xisa [38]

Answer:

  • g = -3/20s + 19

Step-by-step explanation:

Let's assume this is a function

<u>The points are</u>

  • (40, 13) and (60, 10)

<u>Since it is linear relation, we'll get the slope intercept form</u>

  • g = ms + b, where g- number of gallons, s- time in seconds, b- y intercept

<u>Using the points, let's calculate the formula</u>

  • m = (10 - 13)/(60 - 40) = -3/20
  • 10 = -3/20*60 + b
  • 10 = - 9 + b
  • b = 19

<u>So the formula is:</u>

  • g = -3/20s + 19
7 0
2 years ago
Consider a data set with at least three data values. Suppose the highest value is increased by 10 and the lowest is decreased by
bulgar [2K]

Answer:

a. Mean doesn't change.

b. Median doesn't change.

c. Mode can change.

Step-by-step explanation:

Let us assume the data set with 10 observations

{2,6,4,3,2,6,4,9,4,7}.

Arranging data set in ascending order

{2,2,3,4,4,4,6,6,7,9}

mean=2+2+3+4+4+4+6+6+7+9/10=4.7

median

n/2=10/2=5 is an integer so,

median= average of n/2 and n/2 +1

median= (5th value+6th value)/2

median=(4+4)/2=8/2=4

Mode

The most repeated value is 4. So, mode is 4 for assumed data.

Increasing highest value by 10 and decreasing lowest value by 10

{-8,2,3,4,4,4,6,6,7,19}

a.

mean=-8+2+3+4+4+4+6+6+7+19/10=4.7

Mean doesn't change

b.

median

n/2=10/2=5 is an integer so,

median= average of n/2 and n/2 +1

median= (5th value+6th value)/2

median=(4+4)/2=8/2=4

Median doesn't change

c.

Most occurring value is still 4. But mode can change if the value the highest value becomes most concurring value.

5 0
2 years ago
Read 2 more answers
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