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Romashka-Z-Leto [24]
3 years ago
8

Need help on solving problems with comon tangents

Mathematics
1 answer:
Orlov [11]3 years ago
3 0

First, find angle ECD using tan^-1(6/4), we get angle as 56.31

Now by proportionate, angle ECD and angle EBA are equal.

Hence you can use tan to find AB i.e, AB = 18/tan(56.31)= 12

Therefore, AB = 12

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Assume that a spherical cell, with a diameter of 18 μm, has spherical mitochondria, each with a diameter of 0.18 μm. If mitochon
laiz [17]

Since the linear dimension of the mitochondria is 10^-2 times that of the cell, the volume as a proportion of cell volume will be (10^-2)^3 = 10^-6. In order to make up 0.134 of the cell volume, there must be

(1.34×10^-1)/(10^-6) = 1.34×10^5

mitochondria in the cell.

There are about 134,000 mitochondria.

4 0
3 years ago
Simplify:<br>{15×115-(-3)}(4-4)÷3{5+(-3)×(-6)}​
Maurinko [17]
  • (15×115-(-3)}(4-4)÷3{5+(-3)×(-6)}
  • (1725+3)(0)÷3{5+18}
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  • 0÷69
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5 0
2 years ago
Read 2 more answers
The score on a trivia game is obtained by subtracting the number of incorrect answer from twice the number of correct answer. If
brilliants [131]

Answer:

The player answer correctly 30 questions

Step-by-step explanation:

First we have to develop the information that gives us as 2 equations

x = correct answer

y = incorrect answer

z = score = 40

h = total answer = 50

2x - y = z               x + y = h

2x - y = 40             x + y = 50

we clear the x of one equation and replace the value of x in the other equation

x = 50 - y

2x - y = 40

2(50 - y) - y = 40

100 - 2y - y = 40

-3y = 40 -100

y = -60/-3

y = 20

x = 50 - y

x = 50 - 20

x = 30

3 0
3 years ago
The arm span and foot length were both measured (in centimeters) for each of 20 students in a biology class. The computer output
irina1246 [14]

Answer:

The guy above me is completely wrong hahaha.

The correct answer should have a 63%.

It's probably D. The terminology is a little confusing.

The equation of the output looks like:

-7.611 + .186(x) = y

x --> Arm span

y --> Foot span

The linear relationship is formed with the armspan.

6 0
3 years ago
Find the sales tax and total cost of a Sony Playstation that costs $151.99. The tax rate is 4%. Round your answer to the nearest
frozen [14]
4% of 151.99 is 6.0796 rounded is 6.10
4 0
3 years ago
Read 2 more answers
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