All categories

3 years ago

Somebody help me please

Mathematics

2 answers:

Wewaii [24]3 years ago

5 0

-2 I’m pretty sure is the answer

Tcecarenko [31]3 years ago

5 0

Answer:

Step-by-step explanation:

the distance between B and E is 8

mid point=4 points from both E and B

it is D

You might be interested in

I neeeed help plz help me

lord [1]

Answer:

the units were only misalignes by a few cm

6 0

3 years ago

A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. Using

sattari [20]

Answer:

b. 0.6592 and 0.7044

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 interval $1-\alpha$ , 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:

A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. This means that $n = 1100, p = \frac{750}{1100} = 0.6818$

90% confidence interval

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:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 - 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.6592$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 + 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.7044$

So the correct answer is:

b. 0.6592 and 0.7044

7 0

3 years ago

Read 2 more answers

ANSWER THIS PLZZZZZZ

Citrus2011 [14]

I would say it’s B because out of ten it makes the mean 1 point higher

6 0

3 years ago

Please can someone answer this for me?

soldier1979 [14.2K]

Answer:

$.33

all the answers can be found when the rate is known which is

grapes are sold at $3 per pound

Step-by-step explanation:

$6 ÷ 2 pounds = $3 per 1 pound

this means 1 pound of grapes is $3

next row

1 ÷ 3 = $.33

3rd row

1 multiplied by 3 = $3

all the answers can be found when the rate is known which is

grapes are sold at $3 per pound

6 0

2 years ago

1.A 2000 W toaster operates on a household circuit of 200 V. What is the resistance of the wire the make up the heating element

MakcuM [25]

P - power measured in watts
E - voltage measured in volts
I - current measured in amperes
R - resistance measured in ohms

$E=IR
\\P=IE$

1. P = 2000 W, E = 200 V, R = ?

$P=IE
\\2000=I200 
\\I=10
\\E=IR
\\200=10R
\\R=20$

2. P = 0.35 W, E = 150 V, R = ?

$P=IE
\\0.35=I150
\\I= \frac{0.35}{150}
\\ E=IR
\\150=\frac{0.35}{150}R
\\R= \frac{150^2}{0.35}
\\R= 64285.71$

4 0

4 years ago