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Alisiya [41]
2 years ago
9

The value of x is __?

Mathematics
1 answer:
Natalka [10]2 years ago
3 0
If cos x = sin (20 + x ) degrees and 0 degrees < x < 90 degrees , the value of x is ___ degrees
cos x = sin (20 + x)

sin and cos are CO-FUNCTIONS, which means that: cos x = cos [90 - (20 + x)]

cos x = cos (90 - 20 - x)

cos x = cos (70 - x)

Therefore, x = 70 - x

x + x = 70

2x = 70
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2 years ago
A computer uses 1/200 second of a secount to finish a math problem . How many math questions can the computer solve in 2 minutes
aniked [119]

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1.) Multiply 1 * 200, in order to get the amount of problems solved in a second, which would be 200.

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4 0
3 years ago
I need to know how to find the value of x
anzhelika [568]
x = 15°

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8 0
3 years ago
Karen has one nickel one dime one quarter one half dollar and one silver dollar. If she lost one coin she has exactly seven time
spayn [35]

Answer:

If she started with a nickel, a dime, a quarter, a half-dollar, and a dollar, she started with $1.90, which is to say 190 cents.

If she takes away one of the coins she either has 185, 180, 165, 140, or 90 cents remaining. Only one of those numbers is evenly divisible by 7.

 

John

Step-by-step explanation:

6 0
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