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2 years ago

16. What is the equation in slope-intercept form of a line

Mathematics

2 answers:

garri49 [273]2 years ago

5 0

Answer:

y= 2x

Step-by-step explanation:

(0,0) and (2, 4)

m= (y2-y1)/ (x2-x1)

m= (4-0)/(2-0)

m= 4/2

m=2

y- y1= m(x -x1)

y - 4= 2(x - 2)

y-4= 2x - 4

y= 2x

loris [4]2 years ago

5 0

Answer:

Step-by-step explanation:

y=mx+b where m is the slope and b is the y intercept. Since there is point (0,0) we know that b=0 so we only need to find m

m=(y2-y1)/(x2-x1)

m=(4-0)/(2-0)=4/2=2 so the line is

y=2x

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In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is

Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

$\mu=np=300\times0.077=23.1$

$\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62$

Now, using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponding to 26 will be :-

$z=\dfrac{26-23.1}{4.62}\approx0.63$

Using standard distribution table for z , we have

P-value= $P(z\geq0.63)=1-P(z$

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Hence, the probability that at least 26 in the sample are unemployed =0.2643

6 0

3 years ago

A total of 697 tickets were sold for the school play. They were either adult tickets or student tickets. There were 53 fewer stu

Burka [1]

Let x = number of adult tickets sold
Let x-53 = number of student tickets sold

x + x -53 = 697
2x - 53 = 697.

Add 53 to both sides to get:

2x = 750

Divide both sides by 2 to get:

x = 375

375 adult tickets were sold.

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3 years ago

-4-square root of -75 / 60

Leto [7]

<span>the correct answer is -4 - 0.144337567 i</span>

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3 years ago

One large box of birdseed can feed half a dozen parrots for 15 days. For how many days can this same large box of birdseed feed

iren [92.7K]

Box = b
Parrots = p
b/p = number of days it can support the parrots
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1/6 = 15
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(5/6)*100 = 83.333....
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3 years ago

Elvera Hilton earns $12 an hour at her job. The hours she worked during each of the last four weeks are shown below

Minchanka [31]

Answer:

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1 year ago