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Strike441 [17]
4 years ago
9

PLEASE HELP ON #12 I WILL MARK YOU AS A BRILLIANT. please write the equation and solve

Mathematics
2 answers:
prisoha [69]4 years ago
6 0

if you add all of those numbers together and then divide by the amount of numbers there (3) that is how you get an average??? If that's what it is asking

Anastaziya [24]4 years ago
6 0
This is what I got I hope it can help you

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2100 +809 equals ?????
lord [1]
2100 + 809 equals to 2909.
6 0
4 years ago
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3.12 in standard form
LenaWriter [7]
3.12 × 104. 3.12E4 = 3.12 × 10 × 10 × 10 × 10 = 31,200 ...
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3 years ago
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How to write 9,452,729 in expanded form?
hodyreva [135]

Step-by-step explanation:

Expanded Notation Form:

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3 0
4 years ago
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Given that x=3sin​​θ-2 and y=3cos​​​θ+4.Show that (x+2)²+ (y-4)²=9​​​​​​
asambeis [7]

Answer:

First, plug-in x and y as 3sin​​θ-2 and 3cos​​​θ+4 into the equation, respectively:

((3\sin (\theta)-2)+2)^2 + ((3\cos (\theta)+4)-4)^2 = 9

Then, +2 and -2 cancel out and +4 and -4 cancel out as well, leaving you with:

(3\sin(\theta))^2+(3\cos(\theta))^2=9

We can factor out 3^2 = 9 from both equations:

9(\sin(\theta)^2+cos(\theta)^2) = 9

We know from a trigonometric identity that \sin(\theta)^2+cos(\theta)^2 = 1, meaning we can reduce the equation to:

9(1) = 9

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And therefore, we have shown that (x+2)^2 + (y-4)^2 = 9, if x=3sin​​θ-2 and y=3cos​​​θ+4.

Hope this helped you.

7 0
3 years ago
Which expression is equivalent to 30(1/2x-2)+40(3/4y-4
Sladkaya [172]

Answer:

= 15x +30y -220

Step-by-step explanation:

We can easily get another expression if we multiply each individual term, and

add together the result

30(1/2x-2)+40(3/4y-4)

= 15x-60 +30y-160

= 15x +30y -220

See attached picture below

4 0
3 years ago
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