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goldfiish [28.3K]
4 years ago
7

10. We do a study with 100 people on whether they are considered right-handed or left-handed when writing and it turns out that

Mathematics
1 answer:
Maslowich4 years ago
7 0
B !.!.!.!.!.!.!!.!.!.!.!.!.!!.!.!.!.!.!.!.!!.!.!.!.!.!.!!.!.!.
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The Vista Marina rents boats for 25$ per hour. In addition to the rental fee, there is a 12$ charge for fuel. Is the number of h
ser-zykov [4K]

Answer:

No, the total numbers of hours you can rent the boat is not proportional to the total cost.

Step-by-step explanation:

Proportional means when two or more pairs of numbers are at a <u>common ratio</u>. This means when you divide the numbers that correspond to each other from each pair, the quotient is the same.

Ex: (1,2) and (4,8) are proportional.

1 corresponds with 4. 1/4 = 0.25

2 corresponds with 8. 2/8 = 0.25     Same quotients, common ratio is 0.25.

Solving the problem:

<u>Fill in the table using random hours, then check if the pairs are proportional.</u>

According to the problem, you pay $25/h and there is also a flat fee of $12 (money you will pay despite rental time). This means the money you pay is : ($25 X Rental Time) + $12

Choose three random numbers for "Rental Time". Use the equation for each rental time to find the "Cost ($)".

When Rental Time (h) = 1:

($25 X Rental Time) + $12

= ($25 X 1h) + $12

= $37

When Rental Time (h) = 2:

($25 X Rental Time) + $12

= ($25 X 2h) + $12

= $62

When Rental Time (h) = 3:

($25 X Rental Time) + $12

= ($25 X 3h) + $12

= $87

Fill in the table:

Rental Time (h)         1        2       3

Cost ($)                     37     62     87

The pairs are (1, 37), (2, 62) and (3, 87).

Choose two and check if they are proportionate.

1 corresponds with 2. 1/2 = 0.5

37 corresponds with 62. 37/62 = 0.59677.... <u>Different quotient. There is no common ratio</u>.

Since there is no common ratio, the number of hours yo can rent the boat is not proportional to the total cost.

8 0
3 years ago
What value in place of the question mark makes the polynomial below a perfect square trinomial?
UkoKoshka [18]

Answer:

144

Step-by-step explanation:

x^2+24x +144\\\\=x^2 + 2\cdot 12x +12^2\\\\=(x+12)^2

7 0
3 years ago
Explain the Pythagorean theorem.
Illusion [34]

Answer:

B

Step-by-step explanation:

The Pythagorean Theorem only applies to right triangles.

The formula is: a^{2} +b^{2}=c^{2} , where a and b are the legs of the triangle and c is the hypotenuse.

Given any right triangle, the above formula holds true. Thus, the answer is B.

7 0
3 years ago
Solve: 72x + 436= -96x + 1108 X=?
erastova [34]

72x + 436= -96x + 1108x

72x+436=1012x

436=1012x−72x

436=940x

436/940=x

109/235=x

x=109/235

Hope this helps have a blessed and wonderful day!

3 0
3 years ago
Read 2 more answers
Find the missing angles using either the triangle sum theorem (a2+b2=c2) or inverse trigonometric ratios
insens350 [35]

using trigonometry:-

cos of angle ? = 7/16

so ? = arccos 7/16 = 64.06 degrees


The other angle is 90 - 64.06 = 25.94 degrees

4 0
3 years ago
Read 2 more answers
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