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Rudik [331]
3 years ago
14

Please help ill give brainliest!! Im terrible at math :( What is: 3 divided by \frac{1}{4} ?

Mathematics
2 answers:
Ghella [55]3 years ago
3 0

Answer:

12

Step-by-step explanation:

3 ÷ 1/4

Copy dot flip

Keep the first number, change the divide to multiply and take the reciprocal of the 2nd number

3 * 4/1

12

Stolb23 [73]3 years ago
3 0

Answer:

12

Step-by-step explanation:

turn 3 into a fraction which would be 3 over 1

then you flip the 1 over four and multiply it by 3 over 1 and you have the answer

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NEED HELP ASAP!! (25 POINTS)
sergij07 [2.7K]

Answer:

c

Step-by-step explanation:

i taken this earlier today

7 0
3 years ago
The table shows the average annual cost of tuition at 4-year institutions from 2003 to 2010.
nata0808 [166]

Answer: 1) The best estimate for the average cost of tuition at a 4-year institution starting in 2020 =$ 31524.31

2) The slope of regression line b=937.97 represents the rate of change of  average annual cost of tuition at 4-year institutions (y) from 2003 to 2010(x).  Here,average annual cost of tuition at 4-year institutions is dependent on school years .

Step-by-step explanation:

1) For the given situation we need to find linear regression equation Y=a+bX for the given situation.

Let x be the number of years starting with 2003 to 2010.

i.e. n=8

and y be the average annual cost of tuition at 4-year institutions from 2003 to 2010.  

With reference to table we get

\sum x=36\\\sum y=150894\\\sum x^2=204\\\sum xy=718418

By using above values find a and b for Y=a+bX, where b is the slope of regression line.

a=\frac{(\sum y)(\sum x^2)-(\sum x)(\sum xy)}{n(\sum x^2)-(\sum x)^2}=\frac{150894(204)-(36)718418}{8(204)-(36)^2}=\frac{30782376-25863048}{1632-1296}=\frac{4919328}{336}\\\\=14640.85

and

b=\frac{n(\sum xy)-(\sum x)(\sum y)}{n(\sum x^2)-(\sum x)^2}=\frac{8(718418)-(36)150894}{8(204)-(36)^2}=\frac{5747344-5432184}{1632-1296}=\frac{315160}{336}\\\\=937.97


∴ To find average cost of tuition at a 4-year institution starting in 2020.(as n becomes 18 for year 2020 if starts from 2003 ⇒X=18)

So, Y= 14640.85 + 937.97×18 = 31524.31

∴The best estimate for the average cost of tuition at a 4-year institution starting in 2020 = $31524.31


4 0
3 years ago
How would you show the child’s reasoning using base ten blocks?
Phoenix [80]

Answer:

draw two blocks on top of each other being added together

Step-by-step explanation:

draw two blocks being added together...

8 0
2 years ago
Which situation is most likely to have a constant rate of change?
lutik1710 [3]

Answer: A. Ounces of water consumed compared with the number of same-size bottles drunk  



Step-by-step explanation:

When a quantity changes uniformly with respect to the change of other quantity, then we say there is a constant rate of change.

Thus, if one quantity is directly proportional to the other quantity then there is constant rate of change.

A. Ounces of water consumed is directly proportional to the number of same-size bottles drunk. Hence there is a constant rate of change of ounces water with respect to the number of same-sized bottles.

Rest of other options do not have directly proportionality relation between the quantities.

8 0
3 years ago
Need more help on this question
Bond [772]
79
hope this helped

8 0
2 years ago
Read 2 more answers
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