please answer as quick as you can my brainly app keeps crashing before i can get the answer

The equation cos (π/6 + β) is solved to get

From the question it was given that sine β = -0.8

solving for β

sine β = -0.8

β = arc sine ( -0.8 )

β = -0.9273

β ≈ -π/3

substituting the value into cos (π/6 + β)

cos (π/6 + β)

cos (π/6 - π/3)

cos (π/6 - π/3)

= √3 / 2

Learn more about trigonometry at:

https://brainly.com/question/13729598

#SPJ1

Answer:

this is one of systematic sample and correct option is d

Answer:

Use Mathpapa to find your answer.

Step-by-step explanation:

It's a good, and powerful program.

Answer:

  GH¢1533

Step-by-step explanation:

Let d represent the amount of Dauda's share in GH¢. Then the problem statement tells us ...

  Patricia's share is 2d = 2000

  Luca's share is d+600

From Patricia's share, we know Dauda's share is ...

  d = 2000/2 = 1000

and Luca's share is ...

  1000 +600 = 1600

__

The average share is the sum of these, divided by three:

  (2000 +1000 +1600)/3 = 4600/3 = 1533.33

To the nearest GH¢, the average share is GH¢1533.

Answer:

4,000

Step-by-step explanation:

Answer:

414 acres.

Step-by-step explanation:

To answer this question we have to multiply the percent by the total acres.

Remember that when multiplying percents we have to move the decimal 2 places to the left.

So, the equation looks like this:

\(69,000 * .006 = 414\)

Therefore, there are 414 acres that are old-growth trees.

We can check our answer by dividing 414 by 69,000.

414/69000 = .006

.006 * 100 = .6

I hope this helps!!

- Kay :)

Answer:

29

Step-by-step explanation:

345 tickets = 345 x 7.50 = £2587.5 this means 345 - 374 = 29

how to get 374:

17 x 22 = 374

29 tickets were not sold.

Given that,

There are 17 rows of seats in a cinema.

There are 22 seats in each row.

Each ticket for the film cost £7.50

The sale of tickets for that night made £2587.50

How many tickets were not sold?

According to the question,

There are 17 rows of seats in a cinema.

There are 22 seats in each row.

Each ticket for the film cost £7.50

The sale of tickets for that night made £2587.50

Then,

Total number of seats is,

= 17 x 22 = 374

Number of tickets sold = £2587.50 / £7.50 = 345

Therefore,

45 people filled 345 seats

Unoccupied seats = 374 - 345 = 29

Therefore, 29 tickets were not sold.

For more details refer to the link.

https://brainly.com/question/8477216

Answer:

w = 120

x = 60

y = 120

z = 60

Step-by-step explanation:

w = 120 (vertically opposite angles)

sum of co interior angles is 180

⇒ w + x = 180 and x + y = 180

w + x = 180

⇒ 120 + x = 180

⇒ x = 180 - 120

⇒  x = 60

x + y = 180

⇒  60 + y = 180

⇒   y = 180 - 60

⇒   y = 120

z = x (corresponding angles)

z = 60

Answer:

5 ratio 1.00 equals 5ratio1

Answer:

Step-by-step explanation:

1 : 2 => 1 + 2 = 3 Convert the ratio into fractions. Each ratio term becomes a numerator in a fraction. 1 : 2 => 1/3, 2/3 Therefore, in the part-to-part ratio 1 : 2, 1 is 1/3 of the whole and 2 is 2/3 of the whole. Related Calculators

Using Cramer’s Rule, the value of x is 0

We have:

2/5X + 1/4Y = 9/20

2/3X + 5/12 = 3/4

Represent as a matrix

\(\left[\begin{array}{cc}2/5&1/4\\2/3&5/12\end{array}\right] \left[\begin{array}{c}9/20&3/4\end{array}\right]\)

Start by calculating the determinant of the matrix

A = 2/4 * 5/12 - 2/3 * 1/4

Evaluate the product

A = 5/24 - 1/6

Evaluate the difference

A = (5 - 4)/24

|A| = 1/24

Next, replace the last column with the first

\(\left[\begin{array}{cc}9/20&1/4\\3/4&5/12\end{array}\right]\)

Calculate the determinant

|x| = 9/20 * 5/12 - 1/4 * 3/4

Evaluate the product

|x| = 3/16 - 3/16

Evaluate the difference

|x| = 0

The value of x is then calculated as:

x = |x|/|A|

So, we have:

x = 0/(1/24)

Evaluate

x = 0

Hence, the value of x is 0

Read more about Cramer's rule at:

https://brainly.com/question/11198799

#SPJ1

0 and no solutions are both wrong, but dont know the acrual answer lol

Answer:

H0 : p = 0.028

H1: p > 0.028

We conclude that there is not enough evidence to support the school counselor's claim they the use of electronic cigarettes in high school is higher Than 2.8%

Type 11 error

Step-by-step explanation:

H0 : p = 0.028

H1: p > 0.028

If null should not be rejected then;

We conclude that there is not enough evidence to support the school counselor's claim they the use of electronic cigarettes in high school is higher Than 2.8%

3.)

If the actual proportion is 0.034, which means 3.4%, this means it is actually higher. For failing to reject a false Null, then a type 11 error has been committed

Answer: A quadratic function is a polynomial function of form f(x) = ax^2 + bx + c where a,b, and c are constants, and a is not equal to zero.

The given functions are:

8 - 5x = 4(3x - 1)

(4a + 2)(2a - 1) + 1 = 0

2y + 2(3y - 5) = 0

2b(b - 7) + b = 0

The quadratic function(s) among them are:

2. (4a + 2)(2a - 1) + 1 = 0

2b(b - 7) + b = 0

The first one 8 - 5x = 4(3x - 1) is linear and not a quadratic function, and the third one 2y + 2(3y - 5) = 0 is also linear, not a quadratic function.

Note that to identify a quadratic function, we can look for the pattern of x^2 or y^2 in the equation.

Also, we could expand the second degree polynomials in the form (ax^2+bx+c) and check if there are x^2 or y^2 term on both sides of the equation.

Step-by-step explanation:

Answer:

I believe the answer is D.

\(\huge\boxed{Answer\hookleftarrow}\)

D

\(\huge\boxed{Explanation\hookleftarrow}\)

Mark as Brainliest

Answer:

Answer is option  D

Step-by-step explanation:

Hope this helps:)

Both equations are equal since they both reduce to 4x + 8 as the surface area of a rectangle with dimensions of (x + 2) units and (4 units).

An expression in mathematics is made up of various elements, including numbers, variables, and mathematical operations like addition, subtraction, multiplication, division, exponents, and roots. Expressions can represent a single number or a group of numbers, and they can be simple or sophisticated. For instance, the phrase 3x + 2 denotes a linear equation with the variable x. The expression (x + 3)(x - 4) denotes the sum of two binomials.

given

First and third expressions are interchangeable.

the surface area of a rectangle with dimensions of (x + 2) units and (4 units).

Area is equal to length times breadth.

Area = 4x + 8x + (x + 2) x 4a rectangular prism with dimensions of 2 units long, 1 units broad, and (2x + 4) units high has a volume of 4 units.

Volume is calculated using the formula LWH.

Volume equals 2 x 1 x ((2x + 4))

Volume equals 2(2x + 4)

Volume = 4 times Plus 8

Both equations are equal since they both reduce to 4x + 8 as the surface area of a rectangle with dimensions of (x + 2) units and (4 units).

To know more about expressions visit :-

brainly.com/question/14083225

#SPJ1

As group size increases, the complexity of the group increases (option A).

What is group size?

Even within the same species, group size can vary greatly, so we frequently need statistical tests to evaluate these measurements between two or more samples as well as statistical measures to quantify group size. Since group sizes typically follow an aggregated (right-skewed) distribution, where most groups are small, few are large, and a very small number are very large, group size measures are infamously challenging to handle statistically.

As group size increases, the complexity of managing and coordinating the group also increases.

The larger the group, the more difficult it is to communicate effectively, to make decisions, and to ensure that everyone is working towards a common goal.

This is why larger organizations often have more complex hierarchies and more formalized communication and decision-making processes.

Therefore, the correct option is A.

To learn more about group size from the given link

https://brainly.com/question/29580215

#SPJ1

An estimated 3,042 people in attendance would prefer relish on a hot dog.

Given that;

For a recent football game of 8,450 in attendance,

And, 150 people were asked for they prefer on a hot dog.

Now, For number of people in attendance would prefer relish on a hot dog, we can use the proportion of people in the sample who preferred relish:

By proportion we get;

x = (54/150) x 8450

x = 54 * 56 1/3

x = 3042

Therefore, An estimated 3,042 people in attendance would prefer relish on a hot dog.

Learn more about the proportion visit:

https://brainly.com/question/1496357

#SPJ1

Using the a pair of adjacent angles, we will see that:

Z° = 137°

When we have an intersection between two lines, we know that any pair of adjacent angles (they share a side) are congruent angles, thus, their measures add up to 180°.

Then here we can write a linear equation for z.

z + 43 = 180

Solving that for z, we will get:

z = 180 - 43

z = 137

That is the measure of the angle.

Learn more about congruent angles by reading:

https://brainly.com/question/14791175

#SPJ1

Answer:

FH = 35.64

Step-by-step explanation:

(∠A = 360 so the other angle is 40)

By law of cosines,

FH² = AH² + FA² - 2(AH)(FA) * cos(A)

= 30² + 25² - 2(30)(25) * cos(80)

= 900 + 625 - 1500 * 0.17

= 1525 - 255

FH²  = 1270

FH = √1270

FH = 35.64

Answer:

x=3

Step-by-step explanation:

25+134+4x+9+180

4x+168+180

4x+12

x=3

Answer:

0.59701492537

Step-by-step explanation:

The statement that all numbers that have 5 as a factor also have 2 as a factor is false, as numbers ending in 5 have five as a factor but are odd numbers, meaning that they do not have two is a factor.

The factors of a number are the numbers by which the number is divisible.

Hence the numbers that have 2 and 5 as factors as the multiples, given as follows:

Numbers that finish in 5 are odd, meaning that they do not have 2 is a factor, hence the statement is false.

More can be learned about the factors of a number at https://brainly.com/question/219464

#SPJ1

The complex roots of the equations are:

Part B: Solving equations using the quadratic formula:

5. x² + 4x + 6 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (-4 ± √(4² - 4(1)(6))) / (2(1))

Simplifying: x = (-4 ± √(-8)) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

6. x² - 4x + 13 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (4 ± √((-4)² - 4(1)(13))) / (2(1))

Simplifying: x = (4 ± √(-36)) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

7. x² + 49 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (0 ± √(0² - 4(1)(49))) / (2(1))

Simplifying: x = ±√(-196) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

8. x² - 6x + 4 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (6 ± √((-6)² - 4(1)(4))) / (2(1))

Simplifying: x = (6 ± √(20)) / 2

Simplifying further: x = 3 ± √5

The equation has two real solutions.

9. x² + 2 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (0 ± √(0² - 4(1)(2))) / (2(1))

Simplifying: x = ±√(-8) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

10. x² + 8 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (0 ± √(0² - 4(1)(8))) / (2(1))

Simplifying: x = ±√(-32) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

11. x² + 16 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (0 ± √(0² - 4(1)(16))) / (2(1))

Simplifying: x = ±√(-64) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

12. x² + 2x + 3 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (-2 ± √(2² - 4(1)(3))) / (2(1))

Simplifying: x = (-2 ± √(-8)) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

13. x² + 5x + 8 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (-5 ± √(5² - 4(1)(8))) / (2(1))

Simplifying: x = (-5 ± √(25 - 32)) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

14. x² - 3x + 4 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (3 ± √((-3)² - 4(1)(4))) / (2(1))

Simplifying: x = (3 ± √(9 - 16)) / 2

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

15. 2x² - 3x = -3

To solve this equation, first rearrange it to the form ax² + bx + c = 0:

2x² - 3x + 3 = 0

Using the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values: x = (3 ± √((-3)² - 4(2)(3))) / (2(2))

Simplifying: x = (3 ± √(9 - 24)) / 4

Since the discriminant is negative, there are no real solutions. The equation has two complex roots.

Find out more on complex roots here: https://brainly.com/question/29654300

#SPJ1

Answer:

714

Step-by-step explanation:

To solve this you have to use the BODMAS theory.

That means,

B ⇒ Brackets

O ⇒ Of

D ⇒ Divide

M ⇒ Multiplication

A ⇒ Addition

S ⇒ Subtraction

You have to solve the sum according to the above.

2 + 3 + 5 + 10 x 64 + 7 + 57

2 + 3 + 5 + 640 + 7 + 57

5 + 645 + 64

650 + 64

714

Let me know if you have any other questions. :-)

Answer:

Step-by-step explanation:

\(\frac{9-3y}{1-9y} = \frac{8}{5}\)

do cross multiplication

\(5(9 - 3y) = 8(1 - 9y)\\45 - 15y = 8 - 72y\\45 - 8 = -72y + 15y\\37 = -57y\\\frac{37}{-57} = y\)

Answer:

Step-by-step explanation:

\(3(3−y) \times 5=(1−9y) \times 8\)

\(45−15y=(1−9y) \times 8\)

\(45−15y=8−72y\)

\(45+57y=8\)

\(57y=8−45\)

\(57y=−37\)