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2 years ago

Can somebody plz help answer all the questions correctly thanks a lot !!!

Mathematics

2 answers:

Simora [160]2 years ago

4 0

Answer:

7) 40 Percent 8) 25 Percent 9) 25 Percent 10) 112 Percent

11) 38 Percent 12) 800 Percent 13) 73 Percent 14) 19 Percent

Step-by-step explanation:

I hope this helps :)

Lady_Fox [76]2 years ago

3 0

Answer:

7. 250%

8. 400%

9. 667%

10. 769%

11. 263%

12. 125%

13. 137%

14. 526%

Step-by-step explanation:

divide the first number by the second number, then multiply that answer by 100

so kind of like: Number1 ÷ Number2 = x

then you do x × 100

and that's your answer

(all of my answers are rounded to the nearest percent)

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Write the number 0.000938 in scientific notion.

ss7ja [257]

0.000938 in scientific notion.

First we need to move the decimal to its right and we need a number which is between 1-10.

0.000938
00.00938
000.0938
0000.938
00009.38

We moved the decimal 4 times and to the right so it will be negative. -4.

9.38 × 10^-4

Scientific notation of 0.000938 is 9.38 × 10^-4.

Check:-

9.38 × 10^-4 = 0.000938
0.000938 = 0.000938
Correct!

Scientific notation of 0.000938 is 9.38 × 10^-4.

6 0

3 years ago

Charles wants to find out if the students in foreign language classes spend more time in class speaking in English or in the for

Nuetrik [128]

C. The way the sample was chosen may overrepresent or underrepresent students taking certain language classes.

The samples he chose may not be a representative sample because the number of students per foreign language class may not be the same. Since classes have different numbers of students, one may have a very large number of students while another may have only a few. Taking equal number of students per class is not a representative sample because it doesn't represent the students correctly.

6 0

2 years ago

Read 2 more answers

A line passes through the points (8, 1) and (6, 7). What is the slope of the line? Answer choices: A)-3 B) -1/3 C) 1/3 D)3

Fittoniya [83]

Answer:

a) -3

Step-by-step explanation:

3 0

3 years ago

Another name for segments qr

Helga [31]

Answer: segment rq

Explanation:

Segments are named by their endpoints. You can start/end with either endpoint. So, qr can also be called rq.

7 0

2 years ago

A rectangular storage container with an open top is to have a volume of 10 m3. the length of this base is twice the width. mater

BartSMP [9]

Refer to the diagram shown below.

The volume of the container is 10 m³, therefore
x*2x*h = 10
2x²h = 10
h = 5/x² (1)

The base area is 2x² m².
The cost is $10 per m², therefore the cost of the base is
(2x²)*($10) = 20x²

The area of the sides is
2hx + 2(2xh) = 6hx = 6x*(5/x²) = 30/x m²
The cost is $6 per m², therefore the cost of the sides is
(30/x)*($6) = 180/x

The total cost is
C = 20x² + 180/x

The minimum cost is determined by C' = 0.
That is,
40x - 180/x² = 0
x³ = 180/40 = 4.5
x = 1.651
The second derivative of C is
C'' = 40 + 360/x³
C''(1.651) = 120 >0, so x = 1.651 m yields the minimum cost.

The total cost is
C = 20(1.651)² + 180/1.651 = $163.54

Answer: $163.54

7 0

2 years ago