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Afina-wow [57]
3 years ago
7

I need help on both of them please

Mathematics
2 answers:
ruslelena [56]3 years ago
8 0

Answer:

not positive but im pretty sure number 11 is A

Step-by-step explanation:

marissa [1.9K]3 years ago
7 0

Answer:

I believe #11 is B (but I am not 100% sure)

Step-by-step explanation:

#12 should be C as the angle is congruent to the one given

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Is there a difference in the number of people who have an Annual pass to Disney World comparing people who live in Florida to th
zlopas [31]

Answer:

Fail to reject the null hypothesis.

Step-by-step explanation:

People who live in Florida and also have annual pass to Disney world is 221, sample size selected for group 1 is 350.

People who do not live in Florida and have annual pass to Disney world is 365, sample size selected for Group 2 is 650.

Group 1 sample proportion is : 221 / 350 = 0.6314

Group 2 sample proportion is 365 / 650 = 0.5615

Test statistics is 0.8317

Since test stats value is greater than the sample proportion significance level, we fail to reject the null hypothesis.

6 0
3 years ago
The length of a rectangle is 3 more than twice its width. the perimeter is 48 feet
deff fn [24]

Answer:

bruh

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
A spring with a spring constant k of 100 pounds per foot is loaded with 1-pound weight and brought to equilibrium. It is then st
shutvik [7]

Answer:

Equation of movement y(t)

y(t)=sin(10t-\pi/2)

Amplitude: 1 inch

Period: 0.628 seconds

Step-by-step explanation:

If there is no friction, the amplitude will be the length it was streched from the equilibrium. In this case, this value is 1 inch

A=1\,inch

The period depends on the mass and the spring constant.

The formula for the period is:

T=\frac{1}{f} =\frac{2/pi}{\omega} =2\pi\sqrt{\frac{m}{k}}=2\pi\sqrt{\frac{1}{100}}=2\pi*0.1=0.628\, s

The model y(t) for the movement of the mass-spring system is

y(t)=A\cdot sin(\omega t +\phi)\\\\A=1\\\\\omega=\sqrt{k/m} =\sqrt{100/1}=10\\\\y(0)=Asin(\phi)=-A\\\\ \phi=arcsin(-1)=-1.571=-\pi/2\\\\\\y(t)=sin(10t-\pi/2)

8 0
3 years ago
If breadth of a rectangle is 19m and perimeter is 80m, find the length of the rectangle.
soldi70 [24.7K]

Answer: 21

Step-by-step explanation:

since 19 is the breadth and the perimeter is 80m, so 19*2=38 and 80-38= 42 so 42/2=21. The answer is 21

3 0
3 years ago
The description of a TV is based upon the diagonal length. If the height of a TV is 24 inches and the width is 32 inches, what i
attashe74 [19]

Answer:

the answer is D.40

Step-by-step explanation:


3 0
3 years ago
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