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laiz [17]
4 years ago
8

Explain why sin (-pi) equals -1 not 1

Mathematics
1 answer:
True [87]4 years ago
5 0
The inverse sin of 1, ie sin-1 (1) is a very special value for the inverse sine function. Remember that sin-1(x) will give you the angle whose sine is x . Therefore, sin-1 (1) = the angle whose sine is 1.
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Simplify: (3 × 22) ÷ 6 + [28 – (4)2] Question 17 options: A) 32 B) 23 C) 46 D) 55
algol13

Answer:

31

Step-by-step explanation:

Here the trick is to perform the indicated operations in the correct order.  Anything inside parentheses must be done first, followed by any multiplication or division, followed by any addition or subtraction.

Doing the work inside parentheses first:

(3 × 22) ÷ 6 + [28 – (4)2]  =>  (66) ÷ 6 + [28 - 8], or

(66) ÷ 6 + [28 - 8]  =>  11 + [20], or 31

3 0
3 years ago
3.5 x + 4 + 2.7 x<br>How do I solve​
elixir [45]

Answer:

3.5x+6.7

Step-by-step explanation:

simplify step-by-step.

3.5x+4+2.7

Combine Like Terms:

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=3.5x+6.7

7 0
3 years ago
Construct quadratic equation whose roots is -2/5 and -3/7,show the solving ​
Snowcat [4.5K]

Answer:

35x^2+29x+6=0

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
What is the equation of this line in standard form? −8x+7y=25 −9x+8y=−23 −8x+9y=−23 −8x+9y=23
kvasek [131]
<span>−8x+7y=25 is already in standard form, altho some people would prefer to re-write it as

</span><span>−8x+7y-25 = 0.

You have shared 4 equations here.  Next time, please separate them with commas or semi colons, or type just 1 equation per line, for increased clarity.  Thanks.</span>
5 0
4 years ago
Andrew has 3 1/6 rows of plants left to water. If Andrew has 9/10 gallons of water in his bucket, how many gallons of water can
Kay [80]

Answer:

do you know the answer?

Step-by-step explanation:

8 0
3 years ago
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