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Fofino [41]
3 years ago
15

As a block of ice melts, its weight changes from 1 /34 lb to 1/4 lb. This change takes 1/4 h. The ice melts at a constant rate.

At what rate does the weight of the ice change? Show your work.
PLZ HELP ME?!?!?
Mathematics
1 answer:
levacccp [35]3 years ago
3 0
You must have these backwards as 1/34 lb is less than 1/4 lb. finding a common denominator, we get (17/68 - 2/68)/(1/4) = 60/68 = 15/17 lb/hour
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Complete the frequency table:
SOVA2 [1]

The percentage of students age 15 and above travel to school by bus is 47%

<h3>How to complete the table?</h3>

The table of values is given as:

                     Method of Travel to School

                            Walk/Bike    Bus    Car Row totals

Under age 15                            18                 165

Age 15 and above    65                                 195

Column totals          152          110        98      360

Using the column total of column 1, we have:

Under age 15 + 65 = 152

This gives

Under age 15 = 87

Using the column total of column 2, we have:

Age 15 and above + 18 = 110

This gives

Age 15 and above  = 92

Using the row total of row 1, we have:

Car + 87 + 18 = 165

This gives

Car = 60

Using the row total of row 2, we have:

Car + 65 + 92 = 195

This gives

Car = 38

So, the complete frequency table is

                     Method of Travel to School

                            Walk/Bike    Bus    Car Row totals

Under age 15           87              18      60        165

Age 15 and above    65          92        38        195

Column totals          152          110        98      360

The percentage of students age 15 and above travel to school by bus is:

Percentage = 92/195 * 100%

This gives

Percentage = 47%

Read more about frequency table at:

brainly.com/question/12576014

#SPJ1

5 0
2 years ago
Using the same survey methodology: random sample of US residents between the ages of 18 to 75 who registered on the Crest websit
kirza4 [7]

Answer:

Stratified sampling

Step-by-step explanation:

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

In this question:

Population divided into groups, and random samples are drawn from the groups. This is a mark of stratified sampling.

6 0
3 years ago
There are 1,296 in.2 in one square yard. Use a proportion to find out how many square yards of carpet it would take to cover te
masya89 [10]

Answer:

30

Step-by-step explanation:

3 0
3 years ago
1/20
Vladimir [108]

Answer:

120th caller

Step-by-step explanation:

120 is the common number by 40 and 30. trust me on this I'm really good at this subject in math.

8 0
3 years ago
What is the answer to the problem
denpristay [2]

Answer:

Option 2

Step-by-step explanation:

(12) - 2 = 10

(11) - 2 = 9

0 x 4 = 0

1 x 4 = 4

8 0
3 years ago
Read 2 more answers
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