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3 years ago

How do you find the distance of two points on a graph

Mathematics

2 answers:

krek1111 [17]3 years ago

8 0

By using the distance formula

dem82 [27]3 years ago

3 0

Answer: you use the distance formula

Step-by-step explanation:

d = distance

(x_1, y_1) = coordinates of the first point

(x_2, y_2) =coordinates of the second point

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The town of Hayward (CA) has about 50,000 registered voters. A political research firm takes a simple random sample of 500 of th

timama [110]

Answer: (0.076, 0.140)

Step-by-step explanation:

Confidence interval for population proportion (p) is given by :-

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

, where $\hat{p}$ = sample proportion.

n= sample size.

$\alpha$ = significance level .

$z_{\alpha/2}$ = critical z-value (Two tailed)

As per given , we have

sample size : n= 500

The number of Independents.: x= 54

Sample proportion of Independents $\hat{p}=\dfrac{x}{n}=\dfrac{54}{500}=0.108$

Significance level 98% confidence level : $\alpha=1-0.98=0.02$

By using z-table , Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

The 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters will be :-

$0.108\pm (2.33)\sqrt{\dfrac{0.108(1-0.108)}{500}}\\\\=0.108\pm2.33\times0.013880634\\\\=0.108\pm0.03234187722\\\\\approx0.108\pm0.032=(0.108-0.032,\ 0.108+0.032)=(0.076,\ 0.140)$

Hence, the 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters.= (0.076, 0.140)

8 0

2 years ago

Lf a+b=10 ,ab=21 then a^3+b^3=

Goshia [24]

Answer:

370

Step-by-step explanation:

a=3 or 7

b=7 or 3

3³+7³=370

8 0

3 years ago

Read 2 more answers

Help pls and explain !!

Aneli [31]

Answer:

d) 5/3 x

Step-by-step explanation:

You substitute a for 2c and b for 5d, so your equation will look like this:

c/d - 2c/5d = x

Then you just simplify into x by making c/d into 5c/5d so you have a common denominator.

5c/5d - 2c/5d = x

3c/5d = x

5/3 is your answer

6 0

3 years ago

Read 2 more answers

What is the square root of 17

Rasek [7]

Answer:idk

Step-by-step explanation:

8 0

3 years ago

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The cost C (in dollars) of making n watches is represented by C=15n 85. How many watches are made when the cost is $385?

liraira [26]

15n +85=385
15n=300
n=20

3 0

2 years ago