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alexandr1967 [171]
2 years ago
15

Perry surveyed 60 students at her school and found that 0.45 of the students she surveyed said their favorite class is math. Ano

ther 35% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
Mathematics
1 answer:
densk [106]2 years ago
3 0
0.45 x 60 = 27
35% x 60 = 21

27-21 = 6 more students prefer math

However, a further 12 students didn't specify whether they prefer maths or science, so you could argue that the answer is 6 +/- 12
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Tariq wrote the equation y=3.2x to represent the line of best fit for the data shown. Is his line a good representation for the
Setler79 [48]

Answer:

No

Step-by-step explanation:

The way to find the line of best fit by estimate is to have about half the points be above and below the line of best fit. In this case Tariq followed the first few points of the data but his estimate would be very off after 10 on the x axis.  This would not accurately predict what the next data point could be.  

6 0
1 year ago
A special shape is 2.02 m long and 1.22 m wide. A double row of tiles makes a border . Each tile is 2cm by 2cm. How many tiles a
Alex787 [66]

Answer:

6.48

Step-by-step explanation:

The computation of tiles are needed to make the border is shown below:-

= 2 \times (length + breadth)

where,

Length is 2.02 m

And, the breadth is 1.22

Now placing these values to the above formula

So, the number of tiles needed to make the border is

= 2 \times (2.02 + 1.22)

= 2 \times 3.24

= 6.48

Therefore for computing the tiles are needed to make the border we simply applied the above formula.

3 0
1 year ago
The following table shows the salary of 7 people in an office last year.
kotegsom [21]

Answer:

a.  £24,714.29

b. £16,833.33

Step-by-step explanation:

The calculation of mean income is given below:-

Mean income = Total addition of salaries ÷ Number of workers

= £9,500 + £25,000 + £13,250 + £72,000 + £12,750 + £29,500 + £11,000

= £173,000 ÷ 7

= £24,714.29

Now,

the Mean income excluding Deva's salary:

= Formula of Mean income

= Total addition of salaries excluding Deva salary ÷ Number of workers

= (£9,500 + £25,000 + £13,250 + £12,750 + £29,500 + £11,000) ÷ 6

= £101,000 ÷ 6

= £16,833.33

7 0
2 years ago
Complete the tasks to subtract the polynomials vertically. (1.3t3 + 0.4t2 – 24t) – (0.6t2 + 8 – 18t) What is the additive invers
Licemer1 [7]
<span>The correct answer is B. –0.6t2 + (–8) + 18t</span><span>
</span>
6 0
2 years ago
Read 2 more answers
Rachel, Mario and Sanjit share some money in the ratios 4 : 3 : 9 Mario receives £96. Work out the difference between the amount
joja [24]

Answer:

Step-by-step explanation:

If Marios share is 3 parts and is £96, then

Find one part = 96/3 = 32

So,

Rachel receives = 32 x 4 = £128

Sanjay receives = 32 x 9 = £288

Hope this helps

4 0
2 years ago
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