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Anika [276]
3 years ago
7

HELP I ACTUALLY NEED HELP AND CAN YOU DO STEP BY STEP :/

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0

Answer:

y = 4x + 6

Step-by-step explanation:

Calculate the slope first;

Take any 2 points on the table: (1, 10)(2, 14)

\frac{y^{2}-y^{1}  }{x^{2}- x^{1} } = \frac{14-10}{2-1} =\frac{4}{1}=4

So the slope is 4

Now to calculate the y-intercept;

y = 4x + b

Lets substitute with one of the points;

10 = 4(1) + b

10 = 4 + b

Subtract 4 from both sides;

6 = b OR b = 6

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What is the 30th term of the linear sequence below?<br><br> -5,-7,-9,-11,-13....
adelina 88 [10]

Answer:

-63

Step-by-step explanation:

This arithmetic progression

The formula is a+(n-1)d

a means the first value

n is the nth term

d is the difference

So a is -5

n is 30

d is -2

So let's substitute

-5+(30-1)-2

-5+(29)-2

-5-58

-63

Therefore the final answer is-63

Just follow the step and the general formula, you will get your final answer

3 0
3 years ago
36 out of 100 randomly selected taxpayers knew about tax incentives for installing energy-saving furnaces. Find a 90% confidence
tresset_1 [31]

Answer:

The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 100, \pi = \frac{36}{60} = 0.6

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 - 1.645\sqrt{\frac{0.36*0.64}{100}} = 0.28

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.36 + 1.645\sqrt{\frac{0.36*0.64}{100}} = 0.44

The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).

7 0
3 years ago
Solve for y using the distributive property 2(y - 14) =8
Paraphin [41]
(y-14)=8/2
y-14=4
y=4+14
y=18
8 0
3 years ago
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What is 2/8+1/6 in the simplest form.
tatuchka [14]

Answer:

20/48

Step-by-step explanation:

6 0
3 years ago
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Plzzzzzzzzzzzzzzzzz help quick
Sergeeva-Olga [200]

Answer:

y=-2x-7 D

Step-by-step explanation:

3 0
4 years ago
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