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OlgaM077 [116]
4 years ago
5

Melanie buys 2 shells for $0.80. Rosi buys 3 shells for $1.20. Carlos buys 4 shells for $1.60. Use the graph to represent this s

ituation. Is there a proportional relationship between the cost and the number of shells? If so, what does the constant of proportionality mean in this situation?
Mathematics
1 answer:
taurus [48]4 years ago
3 0

Answer:

Proportionally , the constant is $0.40 the cost of the shell

Step-by-step explanation:

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This figure consist of a rectangle a semi circle and a quarter circle what is the perimeter of this figure use 3.14 for pi
alexandr402 [8]

Answer:

37.55 m

Step-by-step explanation:

To find the perimeter, we have to add the lengths of each part of the figure.

We start from the circle on top. We see that its diameter is 10 m, therefore its radius is

r = 5 m

(because the radius is half the diameter). The perimeter of a circle is given by

p=2 \pi r

However, here we have half a circle, so its perimeter is

p_1 = \pi r=(3.14)(5)=15.7 m

Then continuing in a clockwise direction, we have to add the length of the side of 2 m:

p_2 = 2 m

Then we have two sides of a square of side 5 m, so:

p_3 = 5 m + 5 m= 10 m

Then we have a quarter of a circle of radius r = 5 m, so its perimeter is:

p_4 = \frac{\pi r}{2}=\frac{\pi (5)}{2}=7.85 m

Finally, we have one more side of length 2 m:

p_5 = 2m

Therefore, the total perimeter is:

p=p_1+p_2+p_3+p_4+p_5=15.7+2+10+7.85+2=37.55 m

4 0
4 years ago
A balloon is floating above a lake and a sunken canoe is below the surface of the lake. The balloon’s vertical position is 12 me
kirza4 [7]
You would minus 12 on both sides which would give you d= -16.8 meters it’s a negative answer btw


Hope this helps
8 0
3 years ago
Read 2 more answers
In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-s
Bond [772]

Answer:

95.44%

Step-by-step explanation:

Mean (m) = 48

Standard deviation (sd) = 9

n = 12

Zscore = (x - m) /sd

X = 30

Zscore = (30 - 48) / 9

Zscore = - 2

X = 66

Zscore = (66 - 48) / 9

Zscore = 2

percentage of daily phone calls numbering between 30 and 66 = P(z < 2) - p(z < - 2)

P(z < 2) = 0.9772

P(z < - 2) = 0.0228

Hence,

0.9772 - 0.0228 = 0.9544

0.9544 * 100% = 95.44

4 0
4 years ago
How do i tell whether the given side length is a right angle
erica [24]

Answer:

The sum of the lengths of any two sides of a triangle is greater than the length of the third side. If you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. If that is not true, then it is not possible to construct a triangle with the given side lengths.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please help me answer the questions ​
madreJ [45]
The answer of this question is going to be B then on 2 A then D
3 0
3 years ago
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