1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andreas93 [3]
3 years ago
13

A parking lot that has 520 spaces

Mathematics
2 answers:
Sholpan [36]3 years ago
6 0

Answer:

75%

Step-by-step explanation:

390/520 = 0.75 =75

hope that helps ;)

WINSTONCH [101]3 years ago
3 0

Answer:

75%

Step-by-step explanation:

390/520×100%

0.75×100%

75%

You might be interested in
I need help with this ..
agasfer [191]

Answer:

B

Step-by-step explanation:

Do you have to show any work?

7 0
3 years ago
Read 2 more answers
Please help me i dont know how to do the down part.
torisob [31]

Answer:

40, 60, 80, 100, 120, 140, 160, 180, 200

Step-by-step explanation:as the 12 goes up by 12 the 20 goes up by 20

8 0
2 years ago
A right rectangular prism is shown. The base rectangle has side lengths of 10 centimeters and 3 centimeters. The height of the p
Fiesta28 [93]

B 21 cm2 is the answer good luck

6 0
3 years ago
Read 2 more answers
To approach the runway, a pilot of a small plane must begin a 10 degrees descent starting from a height of 1983 feet above the g
ddd [48]
<h3>Answer:</h3>

2.2 miles

<h3>Explanation:</h3>

The mnemonic SOH CAH TOA reminds you that

... Sin = Opposite/Hypotenuse

We are given an angle (10°) and its opposite side length (1983 ft), and we are asked to find the hypotenuse (the straight-line distance from the plane to the runway).

... sin(10°) = (1983 ft)/distance

Multiplying by distance and dividing by sin(10°), we have ...

... distance = (1983 ft)/sin(10°) ≈ 11419.6 ft

We want to express this in miles, so we have ...

... 11419.6 ft = (m mi)×(5280 ft/mi)

... (11419.6 ft)/(5280 ft/mi) = m mi ≈ 2.163 mi

Rounding to tenths, the distance is ...

2.2 miles

_____

<em>Comment on the question</em>

The distance from the plane to the airport is different than the horizontal distance from the airport at which the descent must start. The latter distance is the "adjacent" leg of the triangle, so must be found using the tangent function. Rounded to tenths, it is 2.1 miles.

8 0
3 years ago
The side length of aDavid is a statistician. He has a sample size of 40 (which he cannot change). What element of his hypothesis
Sergeeva-Olga [200]

Answer: D) the significance level of the test

=======================================================

Explanation:

The significance level of the test, also known as "alpha", is the probability of making a type 1 error. A type 1 error is where you reject the null hypothesis but it was true all along.

The null hypothesis is where we test a certain probability distribution (eg: normal distribution). Specifically we gather a sample of values and compute the test statistic. If the probability of getting that test statistic or more extreme is smaller than alpha, then we reject the null. This probability value is known as the p-value.

If you lower the alpha value, then that will make it more likely you do not reject the null. Consider an example where alpha = 0.10 to start with. If you get a p-value of 0.02, then you would reject the null. The same would apply for alpha = 0.05; however, with alpha = 0.01, the p-value is no longer smaller than alpha. At this point we do not reject the null. Your textbook may use the phrasing "fail to reject the null".

Going in the opposite direction, increasing the alpha value will make it more likely to reject the null. Each time you adjust the alpha value, keep the p-value to some fixed number (between 0 and 1).

6 0
2 years ago
Read 2 more answers
Other questions:
  • There are 42 sixth-grade students and 60 fifth-grade students participating in an event. The students will be put into groups am
    11·1 answer
  • Tell whether the ratios are proportions: 11/12, 33/36
    7·1 answer
  • A bag containing 15 ounces of mixed nuts contains 40% cashews. Liam adds 45 ounces of mixed nuts containing 60% cashews in the b
    11·1 answer
  • 2 Points
    10·1 answer
  • Write a real world scenario in which 12 fluid ounces would need to be converted into liters . Then make the conversion . Use 1 f
    10·1 answer
  • 10 gallons to 24 gallons what’s the percent change
    6·1 answer
  • Subtract -7a^2+3a-9−7a
    14·1 answer
  • Derek conducts a probability experiment for his mathematics class. he uses the ten cards shown below.
    5·2 answers
  • Assume that females have pulse rates that are normally distributed with a mean of beats per minute and a standard deviation of b
    15·1 answer
  • Which coordinates of jefferson high school's baseball field
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!