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Alekssandra [29.7K]
2 years ago
11

Explain what happens when you round 4.999 to the nearest tenth

Mathematics
1 answer:
Reptile [31]2 years ago
5 0
It would round to 5 because 4.999 is closer to 5 than a decimal (idk if that's 100%)
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Solve the following proportion: k/4=33/20
Gala2k [10]

Step-by-step explanation:

k/4=33/20

k=33/20×4

k=33/5

6 0
3 years ago
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Demand for electrical services in your area is $12 million per year. It is expected to grow 10% compounded annually
sergey [27]

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8 0
2 years ago
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Explain in your own words what it means to say "the probability of…" for each statement below. Be clear about describing the ran
Fiesta28 [93]

Answer:

when many M&M candy are placed in a bag (say) and the Candy has different colors, when you decide to pick a candy out of the bag. you will get 0.20 Red candy in the bag out of the many candy with different colors.

Step-by-step explanation:

first step you claim the hypothesis by using the word' say' or any other word to declare a variable.

3 0
3 years ago
Solve the equation 18y-6y+22=11(y-2)+y
Serhud [2]

Answer:

the answer its 44=0

Step-by-step explanation:

18y-6y+22=11(y-2)+y1

We move all terms to the left:

18y-6y+22-(11(y-2)+y1)=0

We add all the numbers together, and all the variables

12y-(11(y-2)+y1)+22=0

We calculate terms in parentheses: -(11(y-2)+y1), so:

11(y-2)+y1

We add all the numbers together, and all the variables

y+11(y-2)

We multiply parentheses

y+11y-22

We add all the numbers together, and all the variables

12y-22

Back to the equation:

-(12y-22)

We get rid of parentheses

12y-12y+22+22=0

We add all the numbers together, and all the variables

44=0

are not solution for this equation

Hope helps you and have a great day !

   

   

   

6 0
3 years ago
Which of the following is not a direct proportion?<br> A. y=3x<br> B. y=45x<br> C. y=72x<br> D. y=2
koban [17]

Answer:

Variation, in general, will concern two variables, say height and

weight of a person, and how when one of these changes, the other might

be expected to change.  We have direct variation if the two variables

change in the same sense, i.e. if one increases, so does the other.  

We have indirect variation if one going up causes the other to go

down.  An example of this might be speed and time to do a particular

journey, so the higher the speed the shorter the time.

Normally we let x be the independent variable and y the dependent

variable, so that a change in x produces a change in y.  For example,

if x is number of motor cars on the road and y the number of

accidents, then we expect an increase in x to cause an increase in y.  

(This obviously ceases to apply if number of cars is so large that

they are all stationary in a traffic jam.)

When x and y are directly proportional then doubling x will double the

value of y, and if we divide these variables we get a constant result.

Since if y/x = k  then (2y/2x) = k  where k is called the constant of

proportionality

We could also write this  y = kx

Thus if I am given the value of x, I multiply this number by k to find

the value of y.

Example: Given that y and x are directly proportional and y = 2 when

x = 5, find the value of y when x = 15.

We first find value of k, using y/x = k

                               2/5 = k

Now use this constant value in the equation y = kx for situation when

x = 15

     y = (2/5)*15

       = 30/5 = 6

If you want to do this quickly in your head, you could say, x has been

multiplied by a factor 3 (going from 5 to 15), so y must also go up by

a factor of 3.  That means y goes from 2 to 6.

Indirect Variation.

We gave an example of inverse proportion above, namely speed and time

for a particular journey.  In this case if you double the speed you

halve the time. So the product speed x time = constant

In general, if x and y are inversely proportional then the product xy

will be constant.

              xy = k

  or          y = k/x

Example:  If it takes 4 hours at an average speed of 90 km/hr to do a

certain journey, how long would it take at 120 km/hr

   k = speed*time = 90*4 = 360 (k in this case is the distance)

Then time = k/speed

         = 360/120

         = 3 hours.

To do this in your head, you could say that speed has changed by a

factor 4/3, so time must change by a factor 3/4.  However, for the

usual type of problem, go through the steps I outlined above.

Step-by-step explanation:

I hope these examples have made the idea of variation (both direct and

inverse) reasonably clear.

5 0
2 years ago
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