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earnstyle [38]
3 years ago
11

Y=x and y=-x+2 graph

Mathematics
1 answer:
Naddika [18.5K]3 years ago
8 0
Use Photomath for it
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Simplify the polynomial then evaluate for x=-1 3x^2-4+2x-1+x^2
yuradex [85]

Answer:

-3

Step-by-step explanation:

Simplified polynomial: 4x^2 + 2x - 5

Plug in -1: 4(-1)^2 + 2(-1) - 5

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2 years ago
Twenty-two less than three times a number is -70 translate into an equation.​
adoni [48]

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987

Step-by-step explanation:

5 0
3 years ago
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PLEASE HELP ME FAST! THIS IS A SIMPLE TRIG PROBLEM BUT I SKIPPED CLASS.
NikAS [45]

we can factor the whole thing:

(2sin(x) -1)(sin(x)+1) = 0.

Therefore, sin(x) = -1 and sin(x) = 1/2.

For the first one x = 3π/2 and the second is π/6 and 5π/6

So 3π/2, π/6 and 5π/6 are the solutions.

I do kind of have a problem with this because it doesn't mention if you should go over 360°. Otherwise, you have to add in an 2nπ into the equations like 3π/2 + 2nπ; n \in \mathbb{W}

but I don't know if that is necessary for you.

3 0
3 years ago
The scale of scores for an IQ test are approximately normal with mean 100 and standard deviation 15. The organization MENSA, whi
Zina [86]

Answer:

B) 47.5%

Step-by-step explanation:

Refer to the normal distribution chart attached. If 130 is 2 standard deviations higher than the mean (ignore the numbers beneath the percentages), then by the empirical rule, this means that 34%+13.5%=47.5% of adults are between IQs of 100 and 130. Therefore, option B is correct.

5 0
2 years ago
A jar contains 4 blue marbles, 6 red marbles, 10 purple marbles, and 5 green marbles. If you choose one marble, what is the prob
Paladinen [302]
It be a 3/4 possibility that it won’t be green
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3 years ago
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