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3 years ago

10

PLEASE HELPPP HELP HELP HELP HELP ASAPPP MATH AHHHHH

2 answers:

Rom4ik [11]3 years ago

8 0

Answer:

66

Step-by-step explanation:

$121 - 55 = 66$

posledela3 years ago

6 0

Answer:

66°

Step-by-step explanation:

Angle of UST = 121 - 55

UST = 66°

You might be interested in

Use the Law of Sines to find the measure of angle R to the nearest degree.

IrinaK [193]

$\frac{\sin(R)}{PQ} = \frac{\sin(Q)}{PR}$

$\frac{\sin(R)}{24.7} = \frac{\sin(43^{\circ})}{16.9}$

$\sin(R) = 24.7*\frac{\sin(43^{\circ})}{16.9}$

$\sin(R) \approx 0.9967668$

$R \approx \arcsin(0.9967668)$

$R \approx 85.39137896^{\circ}$

$R \approx 85^{\circ}$

The final answer is 85 degrees

4 0

3 years ago

A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne

Leto [7]

Answer:

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

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 level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

Of the 533 randomly selected Americans surveyed, 351 were in favor of the initiative.

This means that $n = 533, \pi = \frac{351}{533} = 0.6585$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 - 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6247$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 + 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6923$

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

6 0

3 years ago

The old city park is rectangular. It has a length of 350 meters. It has a width of 125 meters. What is the perimeter, in meters,

Natali5045456 [20]

(350x2=700) + (125x2=250) 700+250=950 so the perimeter is 950 meters long I hope this helps!

5 0

3 years ago

How to answer this ?

hichkok12 [17]

Answer:

a)3,6,9,12,15,18,24 b)7,14,21,28,35,52,49,56

a)16 b)40 c)24 d)36

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Kin made a Picture frame for a square picture with sides that are 5f-4 inches long. Framing the picture adds 2 inches to the len

elena-s [515]

The perimeter of a shape is the sum of its side lengths

The expressions for the perimeter of the frame are 4(l + 2) and 4l + 8

<h3>How to determine the perimeter of the shape</h3>

The side length of the frame is given as l

So, the perimeter of the frame is

: $P = 4l$

When 2 inches are added to each length, the perimeter of the frame becomes

$P =4(l + 2)$

Expand

$P =4l + 8$

Hence, the expressions for the perimeter of the frame are 4(l + 2) and 4l + 8

Read more about perimeter at:

brainly.com/question/24571594

3 0

2 years ago