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tiny-mole [99]
3 years ago
7

Solve. y = x2 +2 for x. O A. x = I1y - 2 OB. X= y - 2 O C. X = y + 2 D. X = +\y +2

Mathematics
2 answers:
Monica [59]3 years ago
4 0
Bro always choose c if you don’t know the answer it’s always on go , otherwise answer C. X=y+2
aalyn [17]3 years ago
3 0
The answer to your question is A.
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A race car is driven around a circular track at a constant speed of 180mph. If the diameter is 1/2 mile, what is the angular spe
Bogdan [553]
If the diameter is 1/2 mile, that is 0.5 mile, then the radius is 0.25 -half of it!

the angular speed is theta/time, which means

 w=theta/time

but another formula for it is Velocity*radians

w=velocity*radians

velocity is 180 mph and radians are (revolution/2\pi radius), that is:

w=180*(1/2\pi*0.25)
and if we calculate this, we have: w=114.59, which is the correct answer!
4 0
3 years ago
Solve the following system of equations: 2x - y = 7
wlad13 [49]

Answer:

Step-by-step explanation: Not too sure how to explain it this is how you simplify it pretty sure

2x-y=7

+2x    +2x add to both sides to get y alone because it has no friends

___________

-y=7+2x get rid of the negative on the y value

__________

y= -2x -7

5 0
3 years ago
Tia performed an experiment in which she flipped a coin 100 times. The coin landed heads up 49 times and tails up 51 times. The
Snezhnost [94]

Answer:

100                  number of trials

49/100            experimental probability

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which is an example of the associative property?
Mrac [35]
I believe that the answer is C.
5 0
3 years ago
Read 2 more answers
A set of piano prices distributed at a mean of 3000 and a standard deviation of 200 dollars. An electric piano has a price of 25
lana [24]

Answer:

The proportion of piano prices higher than the electric piano is 98.3%

Step-by-step explanation:

The first thing to do here is to calculate the standard score of the price of the electric piano given.

Mathematically, this is

z-score = (x-mean)/SD

where mean is 3000 and SD is 200, x is 2576

z-score = (2576-3000)/200 = -2.12

Now we proceed to calculate the probability of this z-score

The probability we are trying to calculate is

P( x > $2576) or simply P ( z > -2.12)

Using standard score probability calculator or table, we have

P(x>2576) = 1 - P(x<2576)

But, P(x<2576) = 0.017003

P(x>2576) = 1 - P(x<2576) = 0.983

This is same as 98.3%

4 0
3 years ago
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