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Ket [755]
3 years ago
10

Describe a situation where it is easier to use decimals than fractions and explain why

Mathematics
2 answers:
vaieri [72.5K]3 years ago
5 0

When you must multiply non whole numbers, decimals are easier to manipulate in the sense that setting up a multiplication problem with decimals rather than fractions is much simpler and easier to calculate.

iris [78.8K]3 years ago
4 0
Multiplying non whole numbers , can it is a whole lot easier
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At 2:00 PM a car's speedometer reads 30 mi/h. At 2:10 PM it reads 50 mi/h. Show that at some time between 2:00 and 2:10 the acce
Daniel [21]

Answer: If we define 2:00pm as our 0 in time; then:

at t= 0. the velocity is 30 mi/h.

then at t = 10m (or 1/6 hours) the velocity is 50mi/h

Then, if we think in the "mean acceleration" as the slope between the two velocities, we can find the slope as:

a= (y2 - y1)/(x2 - x1) = (50 mi/h - 30 mi/h)/(1/6h - 0h) = 20*6mi/(h*h) = 120mi/h^{2}

Now, this is the slope of the mean acceleration between t= 0h and t = 1/6h, then we can use the mean value theorem; who says that if F is a differentiable function on the interval (a,b), then exist at least one point c between a and b where F'(c) = (F(b) - F(a))/(b - a)

So if v is differentiable, then there is a time T between 0h and 1/6h where v(T) = 120mi/h^{2}

5 0
3 years ago
If nine times a certain number is subtracted from 7 the result is 52. Find the number.
mezya [45]

Answer:

Let the number to find be x

7 - 9x = 52

-9x = 52-7

- 9x = -45

Divide by - 9

x = 5

The number is 5

Hope this helps.

6 0
3 years ago
Read 2 more answers
Which expressions have a quotient of 4/5​
goblinko [34]

Answer:

  • b and e

Step-by-step explanation:

a. 5/2 ÷ 1/2  =

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b. 6/9 ÷ 5/6

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  • 2*2/5 =
  • 4/5

c. 3/6 ÷ 2/5

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d. 7 1/2 ÷ 6 =

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e. 1 1/3 ÷ 1 2/3=

  • 4/3 ÷ 5/3 =
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  • 4/5
5 0
2 years ago
Read 2 more answers
Which area of this sound wave represents a compression?
Karo-lina-s [1.5K]

Answer:

c

Step-by-step explanation:

idk but im think im sure

4 0
3 years ago
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80% of x is 40. What is the value of x?<br><br> Please help hurry!!
butalik [34]

Answer:

The answer would be 50

Step-by-step explanation:

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2 years ago
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