What is sin 30°?
60°
2
2
1
90°
30°
3

What Is Sin 30?6022190303

Answers

Answer 1

According to the property of cofunctions, [tex]$\sin 30^{\circ}$[/tex] exists equivalent to

[tex]$\cos 60^{\circ} \cdot \sin 30^{\circ}=1 / 2$[/tex].

What is cofunction?

A trigonometric function whose value for the complement of an angle exists equivalent to the value of a given trigonometric function of the angle itself the sine exists the cofunction of the cosine.

According to the property of cofunctions, [tex]$\sin 30^{\circ}$[/tex] exists equivalent to

[tex]$\cos 60^{\circ} \cdot \sin 30^{\circ}=1 / 2$[/tex].

Therefore, the correct answer is option B. 1/2.

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What Is Sin 30?6022190303

Related Questions

evaluate (4√81)³.............​

Answers

Your answer would be 27

By the way please mark brainliest

5. Find the value of side x and y. Leave answers in simplest radical form a applicable.

Answers

Therefore , as a result, x = 53 and y = 10 are the answers to the trigonometry problem that was presented.

What is trigonometry?

Trigonometry is the discipline of mathematics that studies correlations between angles and sides of triangles. Trigonometry is present in all of geometry because every ahead and move form may indeed be resolved to a set of triangles. Amazingly intricate connections exist between geometry and other areas of mathematics, particularly arithmetic, real or abstract, infinite series, arithmetic, and infinite series.

Here,

Sin 30 = Opposing Side/High

1/2 = 5 / y

y = 5 / (1/2)

y = 10

Cos 30 = Adjustment Side/ Hyp

√3/2 = x/y

√3/2 = x/10

x = 10√3 / 2

x = 5√3

In light of this, the given fractional problem's answer is

x = 5√3 and y = 10.

Therefore , as a result, x = 53 and y = 10 are the answers to the trigonometry problem that was presented.

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Using data from 50 workers, a researcher estimates Wage = β0 + β1Education + β2Experience + β3Age + ε, where Wage is the hourly wage rate and Education, Experience, and Age are the years of higher education, the years of experience, and the age of the worker, respectively. The regression results are shown in the following table.
Coefficients Standard Error t Stat p-Value
Intercept 7.45 3.79 1.97 0.0554
Education 1.06 0.37 2.86 0.0063
Experience 0.37 0.18 2.06 0.0455
Age −0.02 0.06 −0.33 0.7404
Interpret the point estimate for β1.
A. As Education increases by 1 year, Wage is predicted to increase by 1.06/hour.
B. As Education increases by 1 year, Wage is predicted to increase by 0.37/hour.
C. As Education increases by 1 year, Wage is predicted to increase by 1.06/hour, holding Age and Experience constant.
D. As Education increases by 1 year, Wage is predicted to increase by 0.37/hour, holding Age and Experience constant.

Answers

C thank me laterrrrrrrrrrrrrrrrrrr

The solution set of 12 x squared minus 14 x equals 10 is

Answers

The given quadratic equation has two possible roots as -

{x} = -1/2 and {x} = 1.667.

What is a quadratic equation?

A quadratic equation is a equation that is of the form -

y = f{x} = ax² + bx + c

Given is the statement as -

"12 x squared minus 14 x equals 10"

The given function can be written as -

f(x) = 12x² - 14x - 10

Refer to the graph attached. The x - intercepts show the solution of the given quadratic equation. So, we can write -

(x + 1/2)(x - 1.667) = 0

(x + 1/2) = 0     and     (x - 1.667) = 0

x = -1/2     and      x = 1.667

Therefore, the given quadratic equation has two possible roots as -

{x} = -1/2 and {x} = 1.667.

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Multiply the two fractions (1/2)(2/5). Simplify your answer.

A.2/7
B.1/5
C.20/100
D.2/10

Answers

Answer:

b

Step-by-step explanation:

I need help because I don't understand and I need an explanation of how to do it, please.

Answers

Answer:

Step-by-step explanation:

a.we konw DC=2b and DO=OC, so the coordinate of D(-b, 0), C(b, 0)

b.we konw the height of rectangle is h, so the coordinate of A(-b, h), B(b, h).

please help it’s due in half an hour

Answers

Answer:

(a) They asked for one value of x

but I'll give you both

They're 2 and -2

(b)g(-1) = 4

Step-by-step explanation:

For (a) they're are looking for the value of x that is corresponding to 1 on the y axis

If you observe from your graph only -2 and 2 will have a corresponding value of 1 therefore they're the answers

for (b) Just look for the corresponding value of -1(x -axis) on the y axis which is 4

Could someone use my Gauthmath code 8APGFB to help me gain more tickets? My math review sheet is crazzzzzzy.

Answers

Answer:

Okay

Step-by-step explanation:

I will try to help you

Answer:

Ok I also have a code: F5LS4F

Step-by-step explanation:

I heard you can get tickets in their discord community or something like that.

multiply 5/12 and the multiplicative inverse of -1/4​

Answers

Answer:

The answer is -2

Step-by-step explanation:

Hope it helps :)

Toby buys packs of 12 racing cars for R49,99 and sells each racing car for R10 at school
1.1 Determine the cost price per racing car
1.2 calculate the profit toby makes per racing car
1.3 Determine toby's profit margin on one pack 12 racing car

Answers

Answer:

1.1  R5.83

1.2 R70.01

1.3 58.34%

Step-by-step explanation:

Given that he buys a pack of 12 racing cars  for  R49,99 then the unit cost for a car which is the total cost divided by the number of cars in a pack

= R49,99/12

= R4.17

If each car is sold for R10 then the profit made on each car which is the difference between the cost and the selling price

= R10 - R4.17

= R5.83

The profit margin on one pack of 12 racing cars

Profit margin is the ratio of the profit to the total selling price

The total profit (profit on one pack of 12 racing cars)

= R5.83 * 12

=R70.01

Total selling price = R10 * 12

=R120

Margin = R70.01 / R120

= 58.34%

For a given arithmetic sequence, the first term, 47, is equal to 26, and the 37 th term, a37, is equal to 278. th Find the value of the 4th term, a4.​

Answers

9514 1404 393

Answer:

  47

Step-by-step explanation:

Given:

  a1 = 26, a37 = 278

Find:

  a4

Solution:

Filling in the given values in the formula for the general term of an arithmetic sequence, we have ...

  an = a1 +d(n -1)

  a37 = 26 +d(37 -1) = 278

  d = (278 -26)/36 = 7 . . . . . . solve for d

Then the 4th term is ...

  a4 = 26 +7(4 -1)

  a4 = 47

A sprint duathlon consists of a 5 km run, a 20 km bike ride, followed by another 5 km run. The mean finish time of all participants in a recent large duathlon was 1.67 hours with a standard deviation of 0.25 hours. Suppose a random sample of 30 participants was taken and the mean finishing time was found to be 1.59 hours with a standard deviation of 0.30 hours.
(a) Identify the parameters in this situation.
(b) Identify the statistics in this situation.
(c) Suppose we were to make a histogram of the finishing times of all participants in the duathlon. Which of the following would the histogram be a display of?
i. Population distribution
iii. Distribution of a sample
ii. Sampling distribution of means
(d) Suppose the process of taking random samples of size 30 is repeated 200 times and a histogram of 200 sample means is created. Which of the following would the histogram be a display of?
i. Population distribution
ii. Distribution of a sample
iii. Sampling distribution of means
(e) What is the standard error for the mean finish time of 30 randomly selected participants?
(f) If one participant is selected at random, what is the probability that his/her time will be less than 1.59 hours.
(g) What is the probability that another sample of 30 randomly selected participants will have a mean finishing time of 1.59 hours or less?

Answers

Answer:

A.) Parameter = 1.67 ; 0.25

B.) Statistic = 1.59, 0.30

C.) Population distribution

D.) Sampling distribution of means

E.) 0.058

F.) 0.395

G.) 0.072

Step-by-step explanation:

A.) The parameters are measured quantities or characteristics derived from the population. The parameter here describes the mean and standard deviation of all participants ;

Population mean = 1.67

Population standard deviation = 0.25

B.) Statistic are measured quantities which are characteristics of the sample. Here, we have the sample mean and standard deviation

Sample mean = 1.59

Sample standard deviation = 0.30

C.) The population distribution is the plot of the histogram prepared using data from the population (all participants)

D.) The plot of the mean value obtained from the repeated measurement or simulation of the sample data is called sampling distribution of the means.

E.) Mean finish time of 30 randomly participants :

Sample size, n = 30

Standard Error = s/√n

Standard Error = 0.30 /√30 = 0.0548

F.) If one participant is selected at random, what is the probability that his/her time will be less than 1.59 hours

P(x < 1.59)

Z = (xbar - μ) / σ ; (1.59 - 1.67) / 0.30 = - 0.267

P(Z < - 0.267) = 0.395 (Z probability calculator)

G.) P(x < 1.59)

Z = (xbar - μ) / s ; (1.59 - 1.67) / (0.30/√30) = - 1.46

P(Z < -1.46) = 0.072 (Z probability calculator)

A town has a population of 18000 and grows at 2% every year. What will be the population after 11 years, to the nearest whole number?

Answers

Answer:

~22381

Step-by-step explanation:

a=starting value = 18000

r=rate = 2%=0.02

Exponential Growth:

b=1+r=1+0.02=1.02

b=1+r=1+0.02=1.02

Write Exponential Function:

y=18000(1.02)^x

y=18000(1.02)

x

Put it all together

\text{Plug in time for x:}

Plug in time for x:

y=18000(1.02)^{11}

y=18000(1.02)

11

Evauate:

y= 22380.73755

y=22380.73755

Round:

y\approx 22381

y≈22381

4. Choose the expression that matches the following statement: three times the difference of
two times a number and 7 taken from 8 of a number.
a) 2x+21
b) 2x - 21
c) -2x - 21
d) -2x - 7

Answers

i think the answer is b

Examine the rotation. Which best describes point D?

Answers

We can’t see the rotation
Where is the picture?

you can use a calculator if you want. No links please help this is very important i will give you brain thing if its correct

Answers

Answer:

A, D

Step-by-step explanation:

1.67+1.4>3, 4.6-1.47>3.

Answer:

A and D

Step-by-step explanation:

How many -pound bags of soap flakes can Mr. Newman fill?

Answers

Answer:

where is the other part of the question

Need more to answer the question.

Lee’s fish is 4 centimeters long.
Tia’s fish is 11 centimeters long.

Answers

Okayyy andddd what do u need answerd?
Tia’s fish is longer



A chef makes small and large snacks to sell at a local art show. He cannot make more than 30
snacks before the show, with no more than 6 large snacks. The chef must make at least 10 small snacks to
earn a profit.
Part A
Let x represent the number of small snacks and y represent the number of large snacks. Given x ≥ 0 and
y 20, select all the inequalities that represent the situation.
0 x≤6
O y ≥ 10
Ox+y≤ 30
O 10x+6y≤ 30
0y≤6
0 x ≥ 10
-01:25

Answers

the inequalities that represent the situation are,

Ox+y≤ 30

0y≤6

0 x ≥ 10

What is inequality?

An inequality is a relation which makes a non-equal comparison between two numbers or mathematical expressions.

Here, given that,

A chef makes small and large snacks to sell at a local art show.

He cannot make more than 30

snacks before the show, with no more than 6 large snacks.

The chef must make at least 10 small snacks to earn a profit.

Let,

x represent the number of small snacks

and y represent the number of large snacks.

Given x ≥ 0 and y 20

So, we get,

the inequalities that represent the situation are,

Ox+y≤ 30

0y≤6

0 x ≥ 10

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8. If 5/12.5 is equivalent to -4/2x, what is the value of x?

Answers

Answer:

-5

Step-by-step explanation:

[tex]\frac{5}{12.5} = \frac{-4}{2x}[/tex]

[tex]5 \cdot 2x = 12.5 \cdot -4[/tex]

[tex]10x = -50[/tex]

[tex]x=-5[/tex]

Tell whether the angles are adjacent or vertical. Then find the value of x.

Answers

Answer is vertical and 128 degrees

Step by step

Vertical angles are opposite each other.
Vertical angles are congruent, or the same

What is the geometric mean of 12 and 15?

Answers

Answer:

The geometric mean is 9.798

Step-by-step explanation:

Answer:

13.416407864998738

Can you please help me faster please help me if you know???!!!

Answers

We want the probability of her coffee being large given she ordered a hot drink.
First we find the sum of the customers with hot drinks:
22+5+48=75
The probability of the drink being large given that it’s a hot drink is:
Large hot drinks/sum of hot drinks= 22/75= 0.293333...≈ 29%.

Answer:

29%

Step-by-step explanation:

5+48+22=75

22/75=0.2933

nearest % is 29%

5. Mariel volunteers at the
animal shelter 3 times a month.
After 6 months, how many
times has she volunteered at
the animal shelter?

Answers

the answer is 18 times

lol sorry im being supperrrrrr lazy rn

Answers

I think it’s 7 because 7 x 7 equals 49 which is the area

Question 6 of 40
Multiply (x2 + 2x + 3)(4x2 – 2x + 1).
O A. 5x2 + 4
O B. 4x + 10x + 17x2 + 8x + 3
O C. 44 + 6x3 + 9x2 - 4x + 3
O D. 44 - 4x2 + 3

Answers

The answer is C. Multiply the second parentheses by each term from the first parentheses, Distribute through the parentheses and collect like terms.

If the radius is 10 ft, what will be the area of the circle!

Answers

Answer:

314

Step-by-step explanation:

Formula for area -> A= PI times radius squared

10x10=100x3.14+314

Answer:

314.16ft

Step-by-step explanation:

Diameter = 2  

×

Radius

Diameter = 2

×

10

Diameter = 20 feet

3) Mr. Johnson uses 2.34 yards of yarn to knit a scarf. If Mr. Johnson has a total of 30.42 yards of yarn, how many scarfs will he be able to knit?​

Answers

she will be able to knit 13 scarfs

Solution

Given ,

Mr. Johnson uses 2.34 yards of yarn to knit a scarfMr. Johnson has a total of 30.42 yards of yarn

To Find : Scarfs Mr John will be able to make if he has 30.42 yards of yarn

2.34 yards of yarn = 1 scarf

30.42 yards of yarn = [tex]\frac{30.42}{2.34}[/tex]

                                 = 13 scarfs

Hence , the number of scarfs Mr John will make with 30.42 yards of yarn is 13

A student made two patterns to show multiplication of a decimal by powers of ten. the equations shown for both patterns are incorrect. pattern A
3.675. 10 =3.7650
3.675. 100= 3.67500
3.675.1,000= 3.675000
pattern B
3.675. 10=3.0675
3.675.0.01= 3.00675
3.675. 0.001= 3.000675
explain why the equations in each of the patterns are false. Include in your explanation the values that should appear on the right side of each equation in both patterns to make the equations true.

Answers

If a student made two patterns to show multiplication of a decimal by powers of ten. All the value are incorrect. The correct value are: 36.75, 367.5, 3,675, 36.75, 0.03675, 0.003675.

How to find the correct value?

Pattern A

3.675×10 =3.7650 Incorrect

3.675×10 = 36.75 Correct

3.675× 100= 3.67500  Incorrect

3.675×100= 367.5 Correct

3.675×1,000= 3.675000 Incorrect

3.675×1,000 = 3,675 Correct

Pattern B

3.675×10=3.0675 Incorrect

3.675× 10= 36.75 Correct

3.675×0.01= 3.00675 Incorrect

3.675×0.01= 0.03675 Correct

3.675×0.001= 3.000675 Incorrect

3.675×0.001= 0.003675 Correct

The correct value are: 36.75, 367.5, 3,675, 36.75, 0.03675, 0.003675.

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Anna has 60 coins in her piggy bank. She notices that she only has dimes and pennies. If she has exactly four times as many pennies as dimes, how many pennies are in her piggy bank?

Answers

43 Penney’s and $6
43-6
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Charles and Paul each have a computer repair business.Charles charges a diagnostic fee of around 60$ plus 12$ per hour spent on computer repairs.Y= 12x+60Paul charges a diagnostic fee of 40$ plus 16$ per hour spent on computer repairs.The situation is graphed in the pictureY= 16x+40*Which statement BEST describes the system of equations?A. For repairs requiring 2 hours of work, the total amount charged by Charles will be 72$ and the total amount charged by Paul will be 84$B. For repairs requiring 8 hours of work, the total amount charged by Charles will be 168$ and the total amount charged by Paul will be 156$C. For repairs requiring 5 hours of work, the total amount charged by both Charles and Paul will be 100$D. For repairs requiring 5 hours of work, the total amount charged by both Charles and Paul will be 120$(This is just too much to look at for me so If anyone can figure it out I greatly appreciate it) List two examples of words that are considered superlatives. 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The box plots show the target heart rates of men 20-40 years old and men 50-70 years old.Target Heart Rates of Men20-40 years old50-70 years oldWhich statement is best supported by the information in the box plots?A )The range of the data for men 20-40 years old is less than the range of the data for men50-70 years old.B )The median of the data for men 20-40 years old is less than the median of the data formen 50-70 years old.C )The minimum target heart rate for men 20-40 years old is less than the minimum targetheart rate for men 50-70 years old.D )The interquartile range of the data for men 20-40 years old is greater than theinterquartile range of the data for men 50-70 years old. Answer this pls I really need it Forty percent of the books a company produces are children's books. Fifty percent of the children's books are paperback books. Which equation represents the relationship between the number (n) of paperback children's books and the total number (t) of books produced?a) n = 0.2tb) n = 0.4tc) n = 0.5td) n = 0.9t Problem Solving Quick Check A recipe for macaroni and cheese takes 3 tablespoons of milk and 2 tablespoons of butter Simon is going to make 5 batches of the macaroni and cheese for a family dinner how many cups of milk are required? tpoint) os o sofia and her brother combined to read a total of 40 books over the summer sofia read four times as many books as her brother how many books did each person read Growing nationalism and militarism in Europe and the creation of secret alliances werea. reasons for the rise of democracyb. causes of World War Ic. requirements for economic developmentd. reasons for the collapse of communism HELP ASAPUse the passage to answer the question.How does the reader know that Jumping In is a work of realistic fiction? Select three answers. A. 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The piston in the engine of a car converts the energy released by octane combustion into mechanical work that turns the crankshaft. Some of the energy is lost to the environment as heat. What are the appropriate signs on q and w for this process In the United States, the national banking system is called the _________________.a.Federal Reserve Systemb.National Bank of Dallasc.New York Stock Exchanged.Securities and Exchange CommissionPlease select the best answer from the choices providedABCD Where does this statement belong?+The excerpt mentions a teacher who helped Helen duringher darkest days.The Story of My LifeBOTHThe Life of Helen KellerAutobiography - written The excerpt suggests that Biography - written byby Helen KellerHelen was a bright andanother person aboutfirst-person point of view happy child before herHelen KellerThe excerpt begins withillness struck.third-person point of viewHelen's belief that she wasThe excerpt explains how a The excerpt includes factsjust like any other child at sudden illness left Helenabout Helen's birthdate,birth.blind and deaf.birthplace, and parents.The excerpt includesThe excerpt providesHelen's memories of herup-to-date informationmother's gentle touch.about the illness that struckHelen.The excerpt includes afirsthand account of HelenThe excerpt offers moreexperiencing the sights andinsights into other people'ssounds of the four seasons.thoughts about Helen'scondition. 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