What is the side length of the orange square? <br><br> Someone plz help!! I have a test due

6) A cone has a slant height of 50 inches and a diameter of 60 inches. What is the volume of the cone?

xxMikexx [17]

Answer:

188000

Step-by-step explanation:

V≈1.88× $10^{5}$

8 0

3 years ago

Read 2 more answers

What is the slope of the line that passes through the points listed in the table?

brilliants [131]

Answer:

B. 2

Step-by-step explanation:

(4, 3) (7, 9) M = Slope

M = $\frac{y^2-y^1}{x^2-x^1}$ Slope formula

$M=\frac{9-3}{7-4}$ Using the slope formula, plot both x and y intercepts

$M=\frac{6}{3}$ Slope needs to be simplified into a whole number

$M=2$

4 0

2 years ago

In step 7, you listed three elements commonly listed in charts. what are all of those options? check all that apply. data points

Vanyuwa [196]

Data points
a data series
an x axis
a y axis
a legend

hope this helps (:

7 0

3 years ago

Geometry. Very basic.

AveGali [126]

Answer:

A)10.25 cm ; B)5 square cm

Step-by-step explanation:

A)

Formula:

p=(a+b+c) [p= perimeter ; a,b , and c are the side lengths.]

∴The perimeter of the triangle =(4+2.75+3.5) cm

=10.25 cm

B)

Formula:

A = 1/2 . b .h [A=area ; b= base ; h= height]

∴The area of the triangle = (1/2 . 4 . 2.5) square cm [b=4 ; h=2.5]

=5 square cm

6 0

3 years ago

A doctor released the results of clinical trials for a vaccine to prevent a particular disease. In these clinical trials, 200,0

CaHeK987 [17]

Answer:

1) No, there is not enough evidence to support the claim that the vaccine was effective (P-value=0.104) .

The null and alternative hypothesis are:

$H_0: \pi_1-\pi_2=0\\\\H_a:\pi_1-\pi_2< 0$

being the subindex 1 for the experimental group and subindex 2 for the control group.

2) Test statistic z=-1.26

Step-by-step explanation:

This is a hypothesis test for the difference between proportions.

The claim is that the vaccine was effective.

Then, the null and alternative hypothesis are:

$H_0: \pi_1-\pi_2=0\\\\H_a:\pi_1-\pi_2< 0$

The significance level is 0.01.

The sample 1 (experimental group), of size n1=100000 has a proportion of p1=0.0002.

$p_1=X_1/n_1=21/100000=0.0002$

The sample 2 (control group), of size n2=100000 has a proportion of p2=0.0003.

$p_2=X_2/n_2=30/100000=0.0003$

The difference between proportions is (p1-p2)=-0.0001.

$p_d=p_1-p_2=0.0002-0.0003=-0.0001$

The pooled proportion, needed to calculate the standard error, is:

$p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{21+30}{100000+100000}=\dfrac{51}{200000}=0.00026$

The estimated standard error of the difference between means is computed using the formula:

$s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.00026*0.99974}{100000}+\dfrac{0.00026*0.99974}{100000}}\\\\\\s_{p1-p2}=\sqrt{0+0.0000000025}=\sqrt{0.0000000051}=0.000071$

Then, we can calculate the z-statistic as:

$z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{-0.00009-0}{0.000071}=\dfrac{-0.00009}{0.000071}=-1.26$

This test is a left-tailed test, so the P-value for this test is calculated as (using a z-table):

$P-value=P(z$

As the P-value (0.104) is bigger than the significance level (0.01), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the vaccine was effective.

6 0

3 years ago

What is the side length of the orange square? Someone plz help!! I have a test due