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Mice21 [21]
3 years ago
15

What is the equation of the line perpendicular to 2x + y = 0 that passes through the point (2, 2)?

Mathematics
1 answer:
Trava [24]3 years ago
8 0
2x + y = 0
y = -2x 
slope = -2

Option C:
<span>y = 1/2x + 1
</span>Slope = 1/2 (perpendicular)

At (2,2), x = 2
y = 1/2(2) + 2 = 2 

Answer C
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ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
ryzh [129]

Answer:

The third option is correct.

The domain of the function is given by

Domain = 0 \leq t \leq 40

The range of the function is given by

Range = 0 \leq V(t) \leq 200

Step-by-step explanation:

Sara bought a cell phone for $200 and its value has decreased at rate of $5 per month.

V(t) is the value of the phone and t is the number of months.

The domain of the function is the possible values of the number of months t.

The domain of the function is given by

Domain = 0 \leq t \leq 40

The range of the function is the values of V(t) that we get after substituting the possible values of the number of months t.

The range of the function is given by

Range = 0 \leq V(t) \leq 200

When the number of months is t = 0 then the value of the function is maximum V(t) = 200

When the number of months is t = 40 then the value of the function is minimum V(t) = 0

Therefore, the third option is correct.

6 0
3 years ago
Splitting the middle term 2x^2-9x+4
DiKsa [7]
(2x-1)(x-4)
Hereeeeeeeee
8 0
3 years ago
There are 2,000 eligible voters in a precinct. A total of 500 voters are randomly selected and asked whether they plan to vote f
Ann [662]

Answer:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

The estimated population proportion for this case is:

\hat p = \frac{350}{500}=0.7

The confidence interval would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=2.58

And replacing into the confidence interval formula we got:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

7 0
3 years ago
Andrew invested $20,000 in mutual funds and received a sum of $35,000 at the end of the investment period. Calculate the ROI. I
Colt1911 [192]
The correct answer to this question is 75%
8 0
3 years ago
Read 2 more answers
Please help me with this.
kramer

Answer:

c

Step-by-step explanation:

cause i am a math mttition

7 0
3 years ago
Read 2 more answers
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