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klasskru [66]
3 years ago
14

• Now suppose a cicada comes out every 8 years instead of 7 years. How many years will go by before the cicada and predator appe

ar at the same time again
Mathematics
1 answer:
rodikova [14]3 years ago
7 0
10 years will go by before the predator and cicada appear at the same time again
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(PLEASEE HELPP 24 points)Regina’s work to find the surface area of a square pyramid from its net is shown below. A square pyrami
Fantom [35]

Answer:

She should have used One-half (9.4) (11.9) to represent the area of a single triangle

Step-by-step explanation:

The pyramid is composed by 4 triangles and 1 square

area of the square: base² = 9.4²

area of each triangle = 1/2*base*height = 1/2*9.4*11.9

surface area of the pyramid = 4*area of each triangle + area of the square = 4*(1/2*9.4*11.9) + 9.4²

8 0
3 years ago
If the diameter of a sphere is 1 meter, then what is its surface area? Leave your answer in terms of π= 3.14
umka21 [38]

surface area = 4 x pi x r^2

 diameter = 1 so radius = 1/2 = 0.5

4 x 3.14 x 0.5^2 = 3.14 meters^2

3 0
3 years ago
Read 2 more answers
Lucy’s chocolate bar is 54% cocoa. If the weight of the chocolate bar is 54 grams, how many grams of cocoa does it contain? Roun
Masteriza [31]

Answer:

The chocolate bar contains 29.2 grams of cocoa.

Step-by-step explanation:

Given that Lucy’s chocolate bar is 54% cocoa and the weight of the chocolate bar is 54 grams.

Hence, the amount of cocoa in the chocolate bar is given by

54% of 54 grams

54% percentage means 54/100 = 0.54

Hence, the amount of cocoa in the chocolate bar is

0.54\times54\\=29.16

When rounded to the nearest tenth, 29.16 should be equal to 29.2

Hence, the chocolate bar contains 29.2 grams of cocoa.

4 0
3 years ago
Find unit rate for 51 in 14 min.
wariber [46]
Its going to be .27ths of an inch for 1 minute.
7 0
3 years ago
Read 2 more answers
Which of the following is a solution of x2 + 4x = −8?
Vladimir [108]
x^{2}+4x = -8
\\\\
x^{2}+4x+8 = 0
\\\\
\Delta = b^{2}-4ac
\\\\
\Delta = (4)^{2}-4 \cdot (1) \cdot (8)
\\\\
\Delta = 16-32
\\\\
\Delta = -16

There's no solution in the set of real numbers.

\boxed{S = \{ \ \ \}}
6 0
3 years ago
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