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3 years ago

Rewrite y=4-2x in slope-intercept form.

1 answer:

5 0

This is already in slope intercept from. because the slope is -2 and the y intercept is 4. so if you put it in stander form you would get y=-2x+4

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Ian is a phycologist interested in determining the proportion of algae samples from a local rivulet that belonged to a particula

pickupchik [31]

Answer: 16590

Step-by-step explanation:

The formula we use to find the sample size is given by :-

, where p = prior estimate of population proportion.

$z^*$ = Critical z-value (Two- tailed)

E= Margin of error .

Let p be the population proportion of cyanobacteria.

Given : E = 0.01

Critical value for 99% confidence interval : $z^*=2.576$

If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.

Now, the required sample size = $n=0.5(1-0.5)(\frac{2.576}{0.01})^2$

$n=0.25(257.6)^2=0.25(66357.76)=16589.44\approx16590$

Required sample size = 16590

5 0

3 years ago

What is the slope of a line that is perpendicular to the line y = x + 4?

Studentka2010 [4]

Answer:

Step-by-step explanation:

7 0

4 years ago

7. Solve for: 17 4 X

Olin [163]

Answer:

√273

Step-by-step explanation:

x² = 17² – 4²

x² = 289 –16

x = √273

pick me as the brainliest. thx

6 0

3 years ago

To solve for the hypotenuse of a right triangle, what information do you need?

Scrat [10]

To find the hypotenuse of any right triangle, you need to square and add the other two sides. We call those two sides LEGS.

(legs)^2 + (leg)^2 = (hypotenuse)^2

In your textbook, you will see it this way:

a^2 + b^2 = c^2, where a = b = legs.

7 0

2 years ago

Read 2 more answers

Find an equation of the tangent line to the curve y = 8 x sin x at the point (π/2, 4π).

densk [106]

y = 5pi/4 - 2x ... I hope it helps

4 0

3 years ago