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4 years ago

It 10 degrees below zero in morning and dropped 8 degrees below. What is the temperature

Mathematics

1 answer:

Lostsunrise [7]4 years ago

6 0

It should be 2 because 10 minus 8 is 2 only common sense

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Find missing angle.

Vsevolod [243]

I don’t really know exactly to what degree you need to put in your solution. But I rounded to the nearest tenth degree.
A = 112 degrees
B= 28 degrees (180-112-40 bc all sides of a triangle must equal 180)
C= 40
a= 27.6 (this is the side opposite of angle A)
b= 14 (side opposite b)
c= 19.2 (side opposite c)

HOW TO SOLVE:
c= law of sines, so c/sin(40) = 14/sin(28), multiply both sides by sin(40) so c can be isolated and solved for. c = 14sin(40)/sin(28). Plug into calculator then get answer. c is approximately 19.2.
a = law of sines again, so a/sin(112) = 14/sin(28). Multiply both sides again by sin(112) then solve. a = 14sin(112)/sin(28). Calculator again. a is around 27.6

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4 years ago

Solve for the given time.

Fittoniya [83]

Answer:

45158

Step-by-step explanation:

Since the colony grows at a rate of 12%, after 2 years there will be $36000\cdot 1.12^2 = 45158.4$ bacteria. Since you probably can't have part of a bacteria, you round to 45158.

5 0

3 years ago

Read 2 more answers

I got really confused and I really don’t know what to do and I try to do for myself but I didn’t get it

otez555 [7]

Answer:

The Answer is A. I made a graph and those points are the only ones that made a line.

5 0

3 years ago

What expression represents the volume in cubic units?

S_A_V [24]

Answer:

C is correct

Step-by-step explanation:

7 0

3 years ago

Let u = <-4, 3>. Find the unit vector in the direction of u, and write your answer in component form. (2 points)

lana66690 [7]

Answer: < -4/5, 3/5>

This is equivalent to writing < -0.8, 0.6 >

======================================================

Explanation:

Draw an xy grid and plot the point (-4,3) on it. Draw a segment from the origin to this point. Then draw a vertical line until reaching the x axis. See the diagram below.

We have a right triangle with legs of 4 and 3. The hypotenuse is $\sqrt{4^2+3^2} = \sqrt{16+9} = \sqrt{25} = 5$ through use of the pythagorean theorem.

We have a 3-4-5 right triangle.

Therefore, the vector is 5 units long. This is the magnitude of the vector.

Divide each component by the magnitude so that the resulting vector is a unit vector pointing in this same direction.

Therefore, we go from < -4, 3 > to < -4/5, 3/5 >

This is equivalent to < -0.8, 0.6 > since -4/5 = -0.8 and 3/5 = 0.6

Side note: Unit vectors are useful in computer graphics.

6 0

2 years ago