All categories

3 years ago

Lily measures the circumference of three pillars.

Mathematics

1 answer:

Mariulka [41]3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

Liz wants to estimate the percentage of people who rent their home. She surveys 320 individuals and finds that 176 rent their ho

SOVA2 [1]

Answer: 0.065

Step-by-step explanation:

Given : Sample size : n= 320

The sample proportion of people who rent their home : $p=\dfrac{176}{320}=0.55$

Significance level : $\alpha:1-0.98=0.02$

Then , Critical value : $z_{\alpha/2}=2.33$

The formula to find the margin of error : -

$E=z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\\Rightarrow\ E=(2.33)\sqrt{\dfrac{0.55(1-0.55)}{320}}\\\\\Rightarrow\ E=0.064799034281\approx0.065$

Hence, the margin of error for the confidence interval for the population proportion with a 98% confidence level =0.065

4 0

3 years ago

The line AB has midpoint (2,5).<br> A has coordinates (1, 2).<br> Find the coordinates of B.

Gekata [30.6K]

Answer:

$X_m = \frac{A_x +B_x}{2}= \frac{1+B_x}{2}= 2$

And we can solve for $B_x$ and we got:

$1+B_x = 4$

$B_x = 3$

$Y_m = \frac{A_y +B_y}{2}= \frac{2+B_y}{2}= 5$

And we can solve for $B_x$ and we got:

$2+B_y = 10$

$B_y = 8$

So then the coordinates for B are (3,8)

Step-by-step explanation:

For this case we know that the midpoint for the segment AB is (2,5)

And we know that the coordinates of A are (1,2)

We know that for a given segment the formulas in order to find the midpoint are given by:

$X_m = \frac{A_x +B_x}{2}= \frac{1+B_x}{2}= 2$

And we can solve for $B_x$ and we got:

$1+B_x = 4$

$B_x = 3$

$Y_m = \frac{A_y +B_y}{2}= \frac{2+B_y}{2}= 5$

And we can solve for $B_x$ and we got:

$2+B_y = 10$

$B_y = 8$

So then the coordinates for B are (3,8)

7 0

3 years ago

Por favor rapido Un grupo de 7 estudiantes se les pregunto: "¿Cuántas horas viste televisión la semana pasada?" Aquí están sus r

katovenus [111]

Answer:

13.4

Step-by-step explanation:

7 0

3 years ago

a boy purchased a party-length sandwhich 56 in. long, he wants to cut it into three pieces so that the middle piece is 6 in. lon

Digiron [165]

Answer: The shortest is 14 in. the longest is 22 in. and the middle is 20 in.

Step-by-step explanation:

8 0

3 years ago

WORTH 90 POINTS WILL MARK BRAINLY PLEASE HELP ME ASAP

konstantin123 [22]

Answer:

they are congruent.

Step-by-step explanation:

just move A down to -1 and and you can see they are the same.

7 0

3 years ago