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Nostrana [21]
2 years ago
11

HELP!!!!! FAST PLEASE!!!!

Mathematics
1 answer:
Marina86 [1]2 years ago
7 0
Think of the right triangle formed by the ladder, the height of the upper end of the ladder and the distance of the bottom of the ladder from the wall.

Then x = 6 ft and the hyp is 10 ft.  The trig function cos theta  equals "adj side" / hyp, so, in this case,

cos theta = 6/10 = 0.6.  Use the arccos x function on your calculator to find the angle x:

x = 0.927 (radians) = 53.1 degrees.
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For a set of five whole numbers, the mean is 4, the mode is 1, and the median is 5. What are the five numbers?
zmey [24]
SO we need 5 numbers that equal to 20, with 5 being the middle number, and ones being the most used number so

1 1 5 x y

According to this, x and y must equal 13 and both be bigger then 5. Because we can rule out every other number, x and y must be 6 and 7.

Your 5 numbers are 1, 1, 5, 6, 7.
5 0
2 years ago
How do you find 0.11111-K=0.01121
Doss [256]
I believe that the answer to this is k=0.0999
4 0
3 years ago
Can someone answer this for me please.
nataly862011 [7]
I’m pretty sure the answer would be “C” I’m not sure though
4 0
2 years ago
What is the value of y when x=3 in this equation y=2x+2
Ksenya-84 [330]

Answer:

8

Step-by-step explanation:

if you substitute 3 for x the equation becomes y=2(3) + 2

using order of operations you multiply 3 by 2 and then add 2 which will give you 8

4 0
2 years ago
If a and b are two angles in standard position in Quadrant I, find cos(a-b) for the given function values. sin a=3/5and cos b=12
goldfiish [28.3K]

The identity in question is

cos(a - b) = cos(a) cos(b) + sin(a) sin(b)

so that

cos(a - b) = 12/37 cos(a) + 3/5 sin(b)

Since both a and b lie in the first quadrant, both cos(a) and sin(b) will be positive. Then it follows from the Pythagorean identity,

cos²(x) + sin²(x) = 1,

that

cos(a) = √(1 - sin²(a)) = 4/5

and

sin(b) = √(1 - cos²(b)) = 35/37

So,

cos(a - b) = 12/37 • 4/5 + 3/5 • 35/37 = 153/185

7 0
2 years ago
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