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goldfiish [28.3K]
4 years ago
10

Sin155° = _____ sin25° sin(-25)° -sin25°

Mathematics
1 answer:
patriot [66]4 years ago
3 0

Answer:

sin 25

Step-by-step explanation:

sin(A − B) = sinA cosB − cosA sinB

sin 155

sin( 180 -25)

A = 180  B = 25

sin180 cos25 − cos180 sin25

Sin 180 = 0

cos 180 = -1

0 - (-1) sin 25

sin 25

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What is the equation for x+1, x+2, x+3
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<span>Hello there.

What is the equation for x+1, x+2, x+3

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3 years ago
PLEASE HELP!!! Does this table represent a function? Why or why not?
Oksi-84 [34.3K]
Each value in the 'x' column (on the left) is unique. There are no repeated x values. This means we do have a function.

Put another way, each x value leads to exactly one y value. This is another way to see that we have a function. A function input must have one output or else it would lead to confusion or ambiguity. For example, let's say you wanted to convert from celsius to fahrenheit. You would use the conversion function F = (9/5)C+32. The idea is whatever celsius C value you plug in, you should get ONE and only one fahrenheit value. Otherwise, it would be impossible to know which fahrenheit temperature to go with. 

Yet another way is to graph each (x,y) point and notice it is impossible to draw a single vertical line through more than one point mentioned in the table. This graph passes the vertical line test to further confirm that we do have a function.

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

Answer: Yes, because every x-value corresponds to exactly one y-value
In other words, the answer is choice B
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3 years ago
A circle has a radius of 10.9 cm. If the area is multiplied by 6, what happens to the radius? HELP ASAP!!
atroni [7]

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root 6

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3 0
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A large dog weighs 80 pounds. What is the dog’s weight in ounces? (16 oz = 1 lb) A.5 oz B. 10 oz C. 640 oz D. 1,280 oz
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8 0
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Read 2 more answers
Please answer number 12. Very urgent!! 18 points!
Ksenya-84 [330]

Answer:

10 5/12

When the numerator is larger than the denominator, we take  groups of whole fractions  (The numerator and denominator are equal) and add 1 to the whole number for each group. Whatever remains when we no longer have the numerator larger than the denominator is left as a fraction.

Step-by-step explanation:

6 3/4 + 3  2/3

We need to get a common denominator

The common denominator is 12

We need to rename the fractional parts  to out of 12

6 3/4 = 6 3/4*3/3 = 6 9/12

3 2/3 = 3 2/3*4/4 = 3 8/12

6 9/12+ 3 8/12

9 17/12

But the numerator is larger than the denominator

We take 12/12 from the fraction  and add it to the whole number

9 17/12-12/12  +1

9+1 5/12

10 5/12

4 0
3 years ago
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