Cos 20°. Cos10°+cos20°. Cos80°
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....................
Related Questions
Convert: 112 meters =______________________
centimeters
Answers
Answer: m cm
112.00 11,200
Step-by-step explanation:
PLEASE OR THE LOVE OF GOD HELP ME
Answers
Answer: C.
Step-by-step explanation:
if they deleat the answer im sorry
Find the value of x
22
18
20
8
Answers
Answer:
20
Step-by-step explanation:
because 3×20=60 , 60-6= 54 . 2x20=40 , 40+14=54 , 4x20=80 , 80-26=54 so the value of x is 20 good luck
Answer:
20
Step-by-step explanation:
Since all angles are congruent, the triangle is an equilateral triangle and all sides are congruent.
3x - 6 = 2x + 14
x = 20
A carpenter has a board that is 4 feet long. He wants to cut it into 3 equal pieces. How many inches long will each piece need to be?
Answers
48/3=16
Each piece will need to be 16 inches long.
find the measure of each given angle
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9514 1404 393
Answer:
∠2 = 19°
Step-by-step explanation:
Angles that are equal to 161° are vertical and corresponding angles: 1, 4, 5.
Angles that are equal to the supplement of 161° are the remaining angles: 2, 3, 6, 7.
Angle 2 is the supplement of 161°:
∠2 = 180° -161°
∠2 = 19°
okay i only have 40 points left and i cant figure out my goformative that my teacher put up if i can get one of yalls discord or anything to were you can help me please do
Answers
Answer:
add me keegan#0839
Step-by-step explanation:
In the ordered pair of numbers (-2,8) the number - 2 is called the
and the number 8 is called the
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Answer:
x co-ordinate and y co-ordinate
2. Find the area; reduce to lowest terms:
Length: 2 3/4 feet width 2/5 feet
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Answer:
1 2/20
Step-by-step explanation:
Please help
34 is what percent of 150
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Answer:
The answer i Think is 22.67%
HELP
Which of the following is an open statement?
14 ÷ 2 = 7
2x + 5x = 7x
3 + 10 = 13
3x = 12
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Answer:
i think 3+10=13 is the open statement
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test. Assume that the researcher’s claim is true. Suppose a driving test is given to a random sample of 90 high school seniors and a separate random sample of 85 high school freshmen. Let and be the sample proportions of seniors and freshmen, respectively, who pass the test. What are the shape and mean of the sampling distribution of ? skewed left with mean –0.35 skewed right with mean 0.625 exactly Normal with mean 0.35 approximately Normal with mean 0.35 approximately Normal with mean 0.625
Answers
Answer:
approximately Normal with mean 0.35
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test.
This means that [tex]p_1 = 0.8, p_2 = 0.45[/tex]
Subtraction of Variable 1 by Variable 2:
By the Central Limit Theorem, the shape will be approximately normal.
The mean is the subtraction of the means of each proportion. So
[tex]p = p_1 - p_2 = 0.8 - 0.45 = 0.35[/tex]
So the correct answer is given by:
approximately Normal with mean 0.35
27. The traffic officer issued violation tickets to traffic
violators. If 68 of them composed 80% of the total
violators, how many violators are there in all?
A. 83
B. 84
C. 85
D. 86
28. There are 18 roses in a bunch of 24 flowers.
What percent of the flowers are roses?
A. 18%
B. 24% C. 60% D. 75%
29. A number is 20% of 50. What percent it is to
200?
A. 5%
B. 10% C.15% D. 20%
Please help
I really need it I'm gonna give u Brainliest
Answers
Answer:
27. C
28. D
29. A
A correlation coefficient is a(n): a. independent variable that is used in a correlational study. b. numerical indicator of the strength and direction of a relationship between two factors. c. index of the practical rather than the statistical significance of research findings. d. numerical indicator of the statistical significance of the findings in a particular research study.
Answers
Answer:
b. numerical indicator of the strength and direction of a relationship between two factors.
Step-by-step explanation:
Correlation coefficient:
The correlation coefficient between two variables is how closely they are related.
For example, in vectors with high correlation coefficient, they are similar, while with low coefficient, they are significantly different. So the correct answer is given by option b.
A circle with center at (0, 0) passes through (0, 6). Find the circumference and area of the circle in
Answers
Answer:
Step-by-step explanation:
If the center is at (0,0) and a point on the circle is (0,6) we know that the radius of the circle is 6 units.
[tex]C=2\pi r\\ \\ C=12\pi\\ \\ A=\pi r^2\\ \\ A=36\pi [/tex]
Question 6 of 25
Today Charlie put a ring on layaway by making a down payment of $85 and
agreeing to pay $18 per month, starting next month, for 21 months. When will
Charlie receive the ring?
O A. In 21 months
O B. In 1 month
O C. Today
OD. In 18 months
Answers
Charlie will receive the ring in 21 months.
What does layaway mean?It is a method of buying something in which a person can make a downpayment to buy something at a store and the store holds the item on their behalf until the last payment is done after which they gain possession of it.
Charlie has put in a ring on layaway. This means that he will only receive the ring in 21 months after he has finished paying all the installments. He will not gain possession of the ring right away after making the downpayment of $85.
Thus, we have found that Charlie will receive the ring in 21 months. The correct answer is option A.
Learn more about layaway here: https://brainly.com/question/4428781
#SPJ2
The length of a side of a cube can be determinad
by finding the cube root of its volume. If a cube has
a volume of 64 cm3 what s the length of a side?
A 40 cm
B. 80 cm
C. 16.0 cm
D. 32.0 cm
Answers
Answer:
4 cm
which is none of the listed answers
Step-by-step explanation:
∛64 = 4
proof:
4x4x4 = 64
Mrs. Jones is 4 times as old as her son. The sum of their ages is 50 years. How old was Mrs. Jones when her son was born?
Answers
Answer:
30
Step-by-step explanation:
is mrs. jones is 40, her son is 10, sum = 50.
ten years before son was 0, mrs. jones was 30
Ted can change an advertisement on a billboard in 5hr. Marie can do the same job in 2hr. How long would it take them if they worked together? Write your answer as a fraction or mixed number, if necessary.
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Answer:
Working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.
Step-by-step explanation:
Given that Ted can change an advertisement on a billboard in 5 hours, while Marie can do the same job in 2 hours, to determine how long it would take them if they worked together the following calculation must be performed:
Ted 1/5 in 1 hour
Marie 1/2 in 1 hour
1/5 + 1/2 = X
5X + 2X = 10
7X = 10
X = 10/7
X = 1 3/7
60/7 x 3 = 25.71
60 x 0.71 = 42.6
So, working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.
which has a value of (2/3)-4
16/81
-81/16
81/16
12/8
Answers
Answer:
81/16
Step-by-step explanation:
(2/3)-4 has a value 81/16
Need help on this question
Answers
which value of x makes the equation 12x -15 = 6 -3x
Answers
Answer:
x=7/5
Step-by-step explanation:
12x+3x=15+6
15x=21
x=7/5
Answer:
X= [tex]\frac{7}{5}[/tex]
Step-by-step explanation:
Ok...
Get ready to see Alot more numbers
1. Rearrange terms.
12x-15=6-3x
12x-15=-3x+6
2. Add 15 to both sides.
12−15=−3+6
12−15+15=−3+6+15
3. Simplify
If you add the numbers you will get:
12x=-3x+21
4. Add 3x to both sides of the equation.
12x=-3x+21
12x+3x=-3x+21+3x
5. Simplify
If you combine the like terms you will get,
15x=21
6. Divide both sides of the equation by the same term.
15x=21
[tex]\frac{15x}{15}[/tex] = [tex]\frac{21}{15}[/tex]
7. Simplify
If you cancel terms that are in both of the numerator and denominator, then divide the numbers you will get:
x= [tex]\frac{7}{5}[/tex]
I hope this helps :)
WILL GIVE BRAINLIEST FOR CORRECT ANSWER Find the area of the shaded region only ( the purple part) :)
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Can you help me please here is the image
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Answer: D all of the above
Step-by-step explanation:
A. you can see that the majoritie of the area is dessort becuase of the long expance of lack of vegitation and water
B. Because there is no other water sourses the cities would have to be along water
C. Along the nile river is vegitation
D. Must be D.
What is the area of a rectangle with the measurement of the length of 12 and width of 6
Answers
Answer:
72 units^2
Step-by-step explanation:
what times 3 equals 3/10
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Answer:
1/10
Step-by-step explanation:
Divide 3/10 by 3. Remember to "keep, flip, change".
3/10 ÷ 3/1
3/10 × 1/3
Multiply across: 3/10 × 1/3 = 3/30
Simplify: 3/30 = 1/10
Write each absolute value in a box to show the order from least to greatest.
|11| |–8| |–2| |5| |–12|
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Answer:
|–2| |5| |–8| |11| |–12|
Answer:
|-2|,|5|,|-8|,|11|,|-12|
Step-by-step explanation:
This is the order because |-2| in absolute value is positive 2 and |11| in absolute value is still positive because you don't change the sign unless the ll was negative in absolute value.
Find the area. Simplify your answer.
x+8
x+7
Answers
Answer:
x² 15
Step-by-step explanation:
I'm not 100% sure.. sorry if I'm wrong..
ILL GIVE BRAINLIEST TO WHO EVER CAN ANSWER MY LAST QUESTION
Answers
Given a triangle with B = 41˚, a = 21, and b = 12. Approximate the measure
of angle A to the nearest 0.1˚.
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4, 5, 3, 3, 1, 2, 3, 2, 4, 8, 2, 4, 4, 5, 2, 3, 6,2
Find the mean, median, and mode(s) of the data. Which measure best
represents the data? Explain your reasoning.
Soon this is due in 5 minutes
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Answer:
Given data:
4, 5, 3, 3, 1, 2, 3, 2, 4, 8, 2, 4, 4, 5, 2, 3, 6,2Put the data in the ascending order:
1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6, 8Mean, the average:
(1 + 2*5 + 3*4 + 4*4 + 5*2 + 6 + 8)/18 = 3.5Median, average of middle two numbers:
3Mode, the most repeated number:
2 (repeated 5 times)Mean is normally the best measure of central tendency, same applies to this data.