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Mademuasel [1]
3 years ago
5

What is 1 + 1 + 2 - 7 + 4? Take your answer and make it x. X + 4 - 2 + X. What is the final answer?

Mathematics
2 answers:
Grace [21]3 years ago
8 0

Answer:

4

Step-by-step explanation:

When you add them the answer is 1.

Now our equation is X plus 4 minus 2 plus X so we will substitute X to our answer which would be

(1) plus 4 -2 plus (1)

1 plus 4 - 2 plus 1

equals to 4

Our answer is 4

ikadub [295]3 years ago
4 0

Answer:

(b)

Step-by-step explanation:

1. In a group of cows and chickens, the number of legs was 14 more than twice the number of heads. The number of cows was:

(a) 5, (b) 7, (c) 10, (d) 12, (e) 14

Solution:

Let the number of cows be x and their legs be 4x.

Let the number of chicken be y and their legs be 2x.

Total number of legs = 4x + 2y.

Total number of heads = x + y.

The number of legs was 14 more than twice the number of heads.

Therefore, 2 × (x + y) + 14 = 4x + 2y.

or, 2x + 2y + 14 = 4x + 2y.

or, 2x + 14 = 4x [subtracting 2y from both sides].

or, 14 = 4x – 2x [subtracting 2x from both sides].

or, 14 = 2x.

or, x = 7 [dividing by 2 on both sides].

Therefore, the number of cows = 7.

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John builds a square dog pen that has an area of 81 square feet. He then builds a
Fiesta28 [93]

Answer:

21.0%

Step-by-step explanation:

8 0
3 years ago
HELP PLEASE!!!!!!
wel

Pat's average rate of change over the entire trip up the mountain is 41.7, while the cable car's average rate of change over the entire trip up the mountain is 50

<h3>The average annual rate of change</h3>

The given parameters are:

Value in 1990 = $12,500

Value in 2009 = $20,050

The average annual rate of change is then calculated as:

Rate of change = Difference in the values/Difference in the years

So, we have:

Rate of change = (20050 - 12500)/(2009 - 1990)

Evaluate

Rate of change = 397.37

<h3>Pat and cable car</h3>

<u>The complete table of average rate of change</u>

The average rate of change is calculated as:

Average rate of change = Difference in heights at the intervals/Difference in the interval

So, we have:

<em>0 - 2 minutes</em>

Pat = (125 - 0)/(2 - 0) = 62.5

Cable = (100 - 0)/(2 - 0) = 50

<em>2 - 4 minutes</em>

Pat = (200 - 125)/(4 - 2) = 37.5

Cable = (200 - 100)/(4 - 2) = 50

<em>4 - 5 minutes</em>

Pat = (225 - 200)/(5 - 4) = 25

Cable = (250 - 200)/(5 - 4) = 50

So, the complete table is:

Time   0 - 2 minutes     2 - 4 minutes    4 - 5 minutes

Pat           62.5                     37.5                   25

Cable       50                         50                      50

<h3>Is the rate of change constant for Pat? Is it constant for the cable car? </h3>

The rate of change is not constant for Pat, while the rate of change is constant for the cable car

This is so because, we have different values for the rate of change for Pat, while we have only one value for the rate of change for Cable car

<h3>The average rate of change over the entire trip up the mountain</h3>

This is calculated as:

Average rate of change = Difference in heights at the intervals/Difference in the interval

So, we have:

Pat = (250 - 0)/(6 - 0) = 41.7

Cable = (250 - 0)/(5 - 0) = 50

Hence, Pat's average rate of change over the entire trip up the mountain is 41.7, while the cable car's average rate of change over the entire trip up the mountain is 50

Read more about average rate of change at

brainly.com/question/2170564

#SPJ1

6 0
2 years ago
Alice Hill is paid 580 per hour Last week she works 62 hours calculate Alice pay she is entitle to time and a 1/2​
Korolek [52]

Answer:

580 x 62 = 35,960 + 17,980 = 53,940

Step-by-step explanation:

for alice to be payed time in a half first you would multiply the amount of hours worked (62) by her pay rate (580) then you would add it to half the amount of hours she worked(31)  by the rate of her pay (580). Her pay would be $53,940 for last week.

5 0
3 years ago
Find the value of -2010/(-30)​
Mekhanik [1.2K]

-2010 : (-30) = -201 : (-3) = 67

5 0
3 years ago
Read 2 more answers
In a survey of 100 out-patients who reported at a hospital on a day, it was found that 70 complained of fever, 50 had stomach tr
cluponka [151]

Answer:

3 patients had all the three complaints

Step-by-step explanation:

Let U be the set of patients who reported at the hospital on that day

Let F be the set of patients who complained of fever

Let S be the set of patients who had stomach troubles

Let I be the set of injured patients

Then the given data can be written as:

  • n(U) = n(F∪S∪I) = 100
  • n(F) = 70
  • n(S) = 50
  • n(I) = 30
  • n(F∩S) + n(S∩I) + n(I∩F) - 3×n(F∩S∩I) = 44

n(F∩S∩I) = ?

Using the formula for the cardinal number of union of three sets:

n(F∪S∪I) = n(F) + n(S) + n(I) - n(F∩S) - n(S∩I) - n(I∩F) + n(F∩S∩I)

100 = 70 + 50 + 30 - (44 + 3×n(F∩S∩I)) + n(F∩S∩I)

100 = 150 - 44 - 2×n(F∩S∩I)

2×n(F∩S∩I) = 106 - 100 = 6

<u>n(F∩S∩I) = 3</u>

3 0
3 years ago
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