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allochka39001 [22]
3 years ago
13

How do you use a number line to solve 235+123

Mathematics
1 answer:
Karolina [17]3 years ago
8 0
You draw a number line do +100 on the line then do +100 +100 +50 +8 then you add them up
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Please help me estimate the answer of 7987 divided by 39
Sauron [17]

204.79

Step-by-step explanation:

8 0
3 years ago
Hanna has 44 minutes to get ready for school she spends x minutes getting dress what's an expression that represent the number o
Goshia [24]
44-x= amount of time left
7 0
3 years ago
Ali will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of 70 and costs an additi
Aleksandr-060686 [28]

Answer: Ali would need to drive 350 miles for the two plans to cost the same.

Step-by-step explanation:

This question can be solved by creating two equations using the information supplied in the question and then solving these simultaneously.

Let the cost be C.

Let the number of miles be M.

Let the initial payment be i.

Let the rate per mile driven be R.

Plan 1:

C = i+R×M

C = 70+0.60M ... equation 1

Plan 2:

C = i+R×M

C = 0+0.80M

C = 0.80M ...equation 2

Substituting equation 2 into equation 1:

0.80M = 70+0.60M

0.80-0.60M = 70

0.20M = 70

M = 70/0.20

M = 350 miles

5 0
3 years ago
The average temperature change in degrees Fahrenheit per hour if the temperature fell 22degree Fahrenheit in 10 hours
Nonamiya [84]

Answer:

2.2 degrees per hour

Step-by-step explanation:

22/10=2.2

4 0
3 years ago
Read 2 more answers
A cutting tool fails due to flank wear while machining. It is observed that the tool life at a cutting speed of 160 m/min is 5 m
Ahat [919]

Answer:

The answer is:

30 minutes.

Step-by-step explanation:

We are given the following information:

at 160 m/min, tool life = 5 min.

at 120 m/min, tool life = 17 min.

This means that as the speed reduced from 160 m/min to 120 m/min, the tool life increased from 5 min. to 17 min, hence the difference between the changes are:

speed = 160 - 120 = 40 m/min

tool life = 17 - 5 = 12 min.

Therefore, it can be concluded that a change of speed of 40 m/min, increases the tool life by 12 min.

40 m/min = 12 min

∴ 1 m/min = 12/40 min.

∴ 100 m/min = 12/40 × 100 = 0.3 × 100 =30 min.

8 0
3 years ago
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