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
wel
2 years ago
11

If the sin 90º = 1, then which statement is true? ​

Mathematics
2 answers:
Anuta_ua [19.1K]2 years ago
4 0

Answer:

<em>cos 0° = 1, because the cosine and sine are complements</em>

Step-by-step explanation:

Here is the formula: sin 0 = cos (90°- 0) or cos 0 = sin (90°- 0)

So it would be: cos 0° = sin (90° - 0°) = sin 90° = 1

rosijanka [135]2 years ago
3 0

Answer:

If  what the sin 90º

Step-by-step explanation:

You might be interested in
How many bacteria are in generation 9?<br> O A. 1,180,980<br> O B. 393,660<br> C. 1440<br> O D. 6561
scoundrel [369]

Answer:

B. 393,660

Step-by-step explanation:

lemme get Brainliest please

5 0
3 years ago
Read 2 more answers
So sorry -this is not a question but since I have no friends im tellling you guys.........I MET HARRY STYLES!!!!!!!!!!!!!!!!!!!!
V125BC [204]
Wow... good job
I hope you get along very well
7 0
3 years ago
Read 2 more answers
Brad a paper airplane out of 2 parallelograms. The height of each parallelogram is 2 inches and the length is 6 inches. What is
Yuki888 [10]

Answer:

16 inch

Step-by-step explanation:

8 0
3 years ago
8th grade math question need answer asap
o-na [289]

P = 16 because if u add 4 to 14 you will get 18 and minus 2 from it to get 16

5 0
3 years ago
Radical Expressions and Data Analysis Unit Portfolio
Gnoma [55]
TASK 1
a) Data and frequency table are attached in picture #1.

b) The histogram is attached in picture #2

c) As the intervals increase the number of pieces of mail received, the frequency decreases, therefore we can say that are received few pieces of mail <span>are received more often.

TASK 2
a) The list of breeds and weights are reported in picture #3. 
</span>
In order to find the mean, sum up all the weights and divide by 9:
m = (<span>8 + 10 + 15 + 29 + 32 + 75 + 77 + 80 + <span>85) / 9 = 45.67 lbs

In order to find the median, you need to select the central value of your distribution: since you have 9 values, the central one will be in the fifth position:
M = 32 lbs

In order to find the mode, you need to select the value which shows more frequently: in this case, every value shows only once, therefore the mode cannot be determined.

The data are best described by the mean because they are almost symmetrically distributed between the least and the biggest values, while the median is more towards the small-weight side of the distribution.
 
b) In order to have an average of 250 lbs, the tenth dog should weight 2089 lbs.

Indeed, if the average is 250 lbs for 10 dogs, it means that the total sum of their weights is 250 × 10 = 2500 lbs. We know that the sum of the first 9 dogs is 411 lbs, therefore, the tenth dog should weight 2500 - 411 = 2089 lbs.

TASK 3
The city picked is Baltimore, the year 2017.
The table is attached in picture #4.
</span></span>
a) The box-and-whisker plot is attached in picture #5.

b) The median is the central value of the distribution, which is: <span> 
42.4, 45.3, 46.8 | 54.7, 57.6, 66.0 | 69.1,  76.5,  80.6 | 85.8, 87.8, 90.0 </span>
where we marked with a tally the quartiles.

Since we have 12 values, the median will be the average between the two central values:
M = (66.0 + 69.1) / 2 = 67.1 °F

c) 7<span>5% of the temperatures are below 83.2 °F.
Indeed, this value represents the third quartile. The position of the third quartile can be found by the formula:
3/4 </span>· (n + 1) = 3/4 · (12 + 1) = 3/4 <span>· 13 = 9.75
Therefore, since we did not get in integer position, the third quartile will be the average between the numbers in position 9 and 10:
q</span>₀.₇₅ = (80.6 + 85.8) / 2 = 83.2 °F

d) 7<span>5% of the temperatures are above 50.8 °F.
Indeed, this value represents the first quartile. Similarly to point c), the position can be found by the formula:
1</span>/4 · (n + 1) = 1/4 <span>· 13 = 3.25
And therefore:
</span>q₀.₂₅ = (<span><span><span>46.8 + </span><span>54.7) / 2 = 50.8 °F.</span></span></span> 

e) Baltimore in 2017 had a median high temperature of 67.1 °F.
25% of the year the high temperatures were warmer than 83.2 °F, with no outlier above 90.0 °F which was the hottest temperature.
25% of the high temperatures were colder than 50.8 °F, with no outlier below 42.4 °F, which was the coldest high temperature.

6 0
3 years ago
Other questions:
  • I've already saved $68 for the $200 video game system. How many hours does raj need to work to earn the remainder of the money h
    11·1 answer
  • What percent of 287.5 is 46
    8·2 answers
  • Need help please and if there is a remainder you need to round to the nearest tenth
    13·1 answer
  • Identify the property used in each of the steps​
    10·1 answer
  • A linear equation determines a line in the xy-plane.<br><br> A. True<br> B. False
    12·2 answers
  • When a softball player gets a hit, it can be a single, double, triple, or home run. When Josephine is at bat, the probability th
    7·2 answers
  • This is another question we cant figure out this is like multiple answers to it so yea pls help.
    11·1 answer
  • In a data set with a normal distribution the main is 59 and standard deviation is three about what percent of the data live betw
    9·1 answer
  • Which of the following is best used to measure the weight of a 18-wheeler truck
    10·1 answer
  • Theo and Kade worked on a school project together. Theo worked on the project 3 fewer hours than Kade did. Altogether, they work
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!