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Alik [6]
3 years ago
5

The day before two days after the day before tomorrow is Saturday. What day is today?

Mathematics
1 answer:
tigry1 [53]3 years ago
6 0

Step-by-step explanation:

(1 before 1) 1 before 2 = Saturday

That's all I can figure out without giving you a definite wrong answer.  I am sorry.  :-(

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In the triangle below, determine the measure of side a.
Lorico [155]
Use trigonometry 
sin 42 = a /  21

a = 21 sin 42 =  14.05
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3 years ago
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3 years ago
Which of the following is true about radiation from the sun?
bearhunter [10]
This isn't a math question and should be in the science section. However, I will still answer the question. The answer is choice B.

-------------------------------------------------------------------------------------------------------------

Here's a further breakdown

A. False. The radiation or energy from the sun can travel through air or else you wouldn't feel the sun's rays. Also, plant life wouldn't be alive without that energy going through the air.

B. True. The rays travel through a vacuum of space. If they couldn't travel through space, then the same problem comes up as in choice A: the issue of not feeling the sun's rays.

C. False. They rays have different frequencies. Because there are many wavelengths (see choice D below), this means there are different frequencies. Recall that f = 1/w where f is the frequency and w is the wavelength.

D. False. The rays are made of different wavelengths. The visible light portion is what we can see, though there is a lot more to the electromagnetic spectrum (eg: ultraviolet light). 

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So once again, the answer is choice B
6 0
3 years ago
Please answer this question correctly. Need help ASAP.!
Tomtit [17]

Answer:

approximation is often useful when it is not a very good one

3 0
3 years ago
Find the solution to the system of equations x + y = 9 and x - y = -1.
Galina-37 [17]

Answer:

(4, 5 )

Step-by-step explanation:

x + y = 9 → (1)

x - y = - 1 → (2)

adding the 2 equations term by term will eliminate y

2x + 0 = 8

2x = 8 ( divide both sides by 2 )

x = 4

substitute x = 4 into either of the 2 equations and solve for y

substituting into (1)

4 + y = 9 ( subtract 4 from both sides )

y = 5

solution is (4, 5 )

6 0
2 years ago
Read 2 more answers
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