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ValentinkaMS [17]
4 years ago
10

Explain how to work out these type of questions please!

Mathematics
2 answers:
e-lub [12.9K]4 years ago
8 0
In these types of problems, you have to get x alone, so you have to get rid of the x’s denominator that is 5. To do this, you will multiply both sides by 5. The 5 in the x/5 with cancel and leave only an x.

The next answer would be x=9 times 5 because of this. Then you will just do 9 times 5, which is 45. So the final answer is x=45.
bixtya [17]4 years ago
7 0

x = 9 \times 5 \\ x = 45
Hope this helps. - M
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Jim was thinking of a number. Jim adds 20 to it, then doubles it and gets an answer of 99.2. What was the original number?
azamat

Alright, lets get started.

Jim was thinking of a number.

Suppose the number Jim was thinking, is x.

Jim adds 20 to it means number will be = x+20

And Jim doubles it, means 2*(x+20)

Jim gets 99.2 and as per us, he gets 2*(x+20)

So, making them equal

2(x+20)=99.2

2x+40=99.2

Subtracting 40 in both sides

2x+40-40=99.2-40

2x=59.2

x=29.6

It means the original number is 29.6.   :   Answer

Hope it will help :)



6 0
3 years ago
Which of the following items has the lowest unit price
sukhopar [10]

5 for $3.50 has the lowest unit price because 3 for $2.19 is $0.73 per item, 4 for $3.00 has a in it price at $0.75, 5 for $3.50 has a unit rate for $0.70 per item, and $0.72 per item is more expensive than $0.70 per item

4 0
3 years ago
Read 2 more answers
What percentage grade should a road have if the angle of elevation of the road is 6 degrees? (The percentage grade is defined as
Andreas93 [3]

Answer:

  10.5%

Step-by-step explanation:

The tangent of the angle is the ratio of rise to run.

  tan(angle) = grade

  tan(6°) ≈ 0.105 = 10.5%

The grade will be 10.5% for an angle of elevation of 6°.

3 0
3 years ago
Job A pays $13.00 per hour but has health benefits. Job B pays $11.00 per hour. Health insurance costs $3,400 per year. You expe
Nezavi [6.7K]

Answer:

a) Job A.

Step-by-step explanation:

Time, t = 2000 hours per year

Job A:

Salary = $13 per hour

Job B:

Salary = $11 per hour

Healfh insurance = $3400 per year

= $3400/2000

= $ 1.7 per hour

B:. Mb = $11 × 2000 = $22000

Health insurance costs 3400$ per year so while we are working our job A we have: so $11.3 × 2000 = $22600. So on job A we earn $600 per year more than on job B.

5 0
3 years ago
Which methods could you use to calculate the y-coordinate of the midpoint of a vertical line segment with endpoints at (0, 0) an
professor190 [17]
The midpoint of a line segment is the point that is located exactly in the middle of two points. It is the average of both points, which is the average of the two coordinates x, and of the two coordinates y.
 We have then:
 M = (((x1 + x2) / 2), ((y1 + y2) / 2))
 Substituting values:
 M = (((0 + 0) / 2), ((0 + 15) / 2))
 M = (0, 7.5)
 Answer:
 
The y-coordinate of the midpoint of a vertical line segment with endpoints at (0, 0) and (0, 15) is:
 
y = 7.5
5 0
3 years ago
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