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aniked [119]
3 years ago
13

\cos (x-10\deg )=(\sqrt(3))/(2)

Mathematics
1 answer:
Charra [1.4K]3 years ago
4 0

Answer:

40°

Step-by-step explanation:

\cos (x-10\degree )= \frac{ \sqrt{3} }{2}  \\  \\ \cos (x-10\degree )=\cos 30\degree  \\  \\ x-10\degree  = 30\degree \\  \\ x = 30\degree + 10\degree \\  \\ x = 40\degree

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Write the product as a mixed number.<br> 5 x 1 1/6
cupoosta [38]

Answer:

9 1/6

Step-by-step explanation:

multiplication of fractions

your 5 = 5/1

hence it will be 5/1 x 11/6 = 55/6

55 divided by 6 will be equal to 9 with one remainder

so your answer will be 9 1/6

3 0
2 years ago
How many pairs of whole numbers have a sum of 40
shusha [124]

That depends on your definition of "whole numbers." In the positive integers, there are twenty pairs: (1, 39), (2, 38), ... (20, 20).

6 0
3 years ago
Find the value of x I’d appreciate if you could explain as well if not that’s fine
Kipish [7]
All the angles in a circle equal to 360 degrees. So basically just add up all the known values: 23+23+15=61 and then subtract that from 360: 360-61=299.

You can also do 23+23+15+x=360. Adding it all becomes 61+x=360, subtract 61 from both sides of the equation, and you get x=299.

(Something to help remember is that the angle is obtuse, meaning it’s automatically more than 90 degrees, hope this helps!)
7 0
3 years ago
The total area of Rhode island is about 1.5x10^3
yarga [219]
Total are of Rhode Island = 1500
6 0
4 years ago
According to the US Census Department, someone born in 1950 has a life expectancy
babymother [125]

Answer:

a) 69.5 b)72.1 c)74.7

Step-by-step explanation:

a)Someone born in 1950 has life expectancy=68.2 yrs while 1970=70.8 yrs

to find life expectancy of someone born in 1960 we can interpolate to find the results like this:

(68.2+70.8)/2 =69.5 because 1960 is exactly in between 1950 and 1970

Now we can see the trend like this :

68.2,69.5,70.8 and common difference is 1.3

b) adding 1.3 to 70.8 we can get life expectancy for someone born i  1980 and that is 72.1

c) adding two times 1.3 life expectancy of someone born in 2000 is 74.7 as year gap is 2

Generally it is said that interpolation is more accurate and extrapolation can have errors but in our present case i'm more confident about b and c as the series is simple but it too depends on a to find the accurate common  difference so if there is some errror in a we too have error chances in b and c so they are interrelated.

8 0
4 years ago
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