.........help.......me.......please

Answer:

x = pi/2 and 11pi/6

Step-by-step explanation:

Given the trigonometry expression

cosx (2 sinx+1)=0

This can be written in two forms as;

cosx  = 0 and 2sinx + 1 =  0

If cos x  = 0

x = arccos0

x = 90degrees

x = pi/2

Similarly

2sinx  + 1 = 0

2sinx = -1

sinx = -1/2

sinx  =-0.5

x = aarcsin(-0.5)

x = -30

Since sin is negative in the third and 4th quadrant

x = 270 + 30

x = 330degrees

x = 330pi/180

x = 11pi/6

Answer:

12x

Step-by-step explanation:

Answer: 25

Step-by-step explanation:

The Price to Earnings ratio, AKA, the P/E ratio, is calculated by dividing the Market price of the stock by the Earnings per share.

Earnings per share = Net earnings for the year / Number of shares

= 2,000,000 / 1,000,000

= $2 per share

P/E ratio = Market price of shares/ Earnings per share

= 50 / 2

= 25

Answer:

45/51 is:

Step-by-step explanation:

make it a whole:

1 6/51

GCF:

1 2/17 is ur answer. Please consider marking me as brainliest if you can! Have an amazing day lovely! <3

Answer:

I think it would be 9/17

For the second one

Answer:

Step-by-step explanation:

It means if she planted 12 tulips then 4 daffodils for every 3 tulips = 16 daffodils

Total = 12 + 16 = 28

Answer:

12 Tulips

Step-by-step explanation:

16 daffodils and 12 tulips for 28 flowers in all

Answer:

question 12 is answer B

question 13 is -8x^3

Step-by-step explanation:

exponent rule [tex]\frac{a^m}{a^n} = a^(^m^-^n^)[/tex]

Answer:

missing angle 32 ...........

Step-by-step explanation:

We are given a theta degree measure of sin in a specific interval. We are asked to find half of that degree measure.

The interval it ask us to find it in is between 2 pi and 5 pi over 2.

That is 360 degrees to 450 degrees. If you use reference angles, that is between the 0 degrees and 90 degrees. So that means our measure is going to be in the 1st quadrant.

Replace x with theta

[tex] \sin( \frac{x}{2} ) = + - \sqrt{ \frac{1 - \cos(x) }{2} } [/tex]

We dont know cos x but we can use the pythagorean trig theorem to find cos x.

[tex] \sin {}^{2} (x) + \cos {}^{2} (x) = 1[/tex]

[tex] \sin {}^{2} ( \frac{4}{5} ) + \cos {}^{2} (x) = 1[/tex]

[tex] \frac{16}{25} + \cos {}^{2} (x) = 1[/tex]

[tex] \cos {}^{2} (x) = 1 - \frac{16}{25} [/tex]

[tex] \cos {}^{2} (x) = \frac{9}{25} [/tex]

[tex] \cos(x) = \frac{3}{5} [/tex]

Cosine in 1st quadrant is positive so 3/5 is cos x.

Replace 3/5 for cos x.

[tex] + - \sqrt{ \frac{1 - \frac{3}{5} }{2} } [/tex]

[tex] + - \sqrt{ \frac{2}{10} } [/tex]

The answer is

[tex] + - \sqrt{ \frac{2}{10} } [/tex]

Answer:

Jesse is correct

step by step explanation:

Answer:

The best bet would be Jesse.

Step-by-step explanation:

Answer:

55

Step-by-step explanation:

44% * 125 = 0.44 * 125 = 55

Answer:

She can expect to receive back 0.44(125 pencils) = 55 pencils

Step-by-step explanation:

She loans out 125 pencils.  If 44% will likely be returned, then 100% - 44%, or 56%, will not be returned.

She can expect to receive back 0.44(125 pencils) = 55 pencils

Answer:

x = 17

Step-by-step explanation:

x + 73 = 90

x = 90 - 73

x = 17

Answer: the top box can be the linear equation y=40x+15 and the bottom box is 40

Step-by-step explanation:

If you swim 15 more minutes than your friend and your swam 55 minutes, that means your friend only swam 40 minutes. The set amount of time that your friend swims for x is 40 minutes. So the additional time you swim is b, 15 minutes.

Answer:-

x=110 degree

Step-by-step explanation:

It's quadrilateral so it's total sum degree is 360

then 40+82+128+x=360

360-(128+82+40)=X

x=360-250

x=110 degree

Answer:

Most simplified version is 1 3/7

Step-by-step explanation:

First step is turn everything into a fraction 4 into a fraction is 4/1

4/1 times 5/14 is 20/14 or 1 and 6/14 or 1 and 3/7

Here we have a problem with the multiplication of fractions.

We will find that:

[tex]4 \cdot\frac{5}{14} = \frac{10}{7}[/tex]

First, two things we need to remember:

[tex]\frac{x}{y} \cdot\frac{a}{b} = \frac{x \cdot a}{y \cdot b}[/tex]

Also, an integer number N can be written as:

[tex]N = \frac{N}{1}[/tex]

Now we want to solve:

[tex]4 \cdot\frac{5}{14}[/tex]

Using the above relations we get:

[tex]4 \cdot\frac{5}{14} = \frac{4}{1} \cdot\frac{5}{14} = \frac{4 \cdot5}{1 \cdot14} = \frac{20}{14}[/tex]

Now we need to simplify this, to do it, we need to divide both numerator and denominator by the same number.

We can see that both are multiples of 2, so if we divide both by 2 we get:

20/2 = 10

14/2 = 7

Then we have:

[tex]\frac{20}{14} = \frac{10}{7}[/tex]

Now 7 and 10 do not have common factors, so we can't simplify it anymore.

Concluding, we get:

[tex]4 \cdot\frac{5}{14} = \frac{10}{7}[/tex]

If you want to learn more, you can read:

https://brainly.com/question/23715562

Answer:

B

Step-by-step explanation:

Use a calculator and do it step by step.

Answer:

e

Step-by-step explanation:

Answer:

D.)

E.) and

A.)

Step-by-step explanation:

Answer:

Option A 1/2x³ is your answer

Answer:

Step-by-step explanation:

Answer:

(x + 7)(x - 7)

Answer:

b is right

Step-by-step explanation:

Answer:

I dont I know i want points

Answer:

Height of the square pyramid is 6.569 centimeter

Step-by-step explanation:

The volume of the square pyramid is 94.5 cubic centimeters

The height of the square pyramid will be equal to the lengths of the sides of the square.

The volume of the square pyramid  is given by

[tex]a^2 * \frac{h}{3}[/tex]

or

[tex]\frac{a^3}{3} = 94.5\\a^3 = 94.5 *3\\a = \sqrt[3]{94.5*3} \\a = 6.569[/tex]centimeter

Height of the square pyramid is 6.569 centimeter

A quadratic equation is given to us. And we need to plot its graph . Firstly we will make a table . For that substitute different values of x to get different values of y . For graph refer to attachment.

• Here's the table .

[tex]\boxed{\begin{array}{c|c} \underline{\red{\bf{ x}}}&\underline{\red{\bf y}}\\\\ \sf 1 &\sf 0 \\\\\sf 0 & \sf 1 \\\\\sf 2 &\sf 1 \\\\\sf -2 &\sf 9 \end{array}}[/tex]

Answer:

The mean is 3. The sum of the number is 18.

Step-by-step explanation:

1+1+1+4+4+7 = 18

18 divided by 6= 3

Answer:

1. The mean is 55.83

2. when n2=81 then n=40.5

3. when -4n=16 then n = -4

Step-by-step explanation:

1. you add all the numbers together then divide the sum by 6

2. divide both sides by 2

3. divide both sides by -4

Answer: 37.5%

Step-by-step explanation:

Answer:

2.16

Step-by-step explanation:

if x is seconds on the graph and y is the distance then you just look for what is y in the coordinate (6, _ ), in which the line on the graph shows it is 13

hope this helps!!

edit:

it seems i was incorrect, ahh im sorry

so you do have to divide the answer in the end, so 13/6 which is equaled to 2.16

Answer:

Step-by-step explanation:

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Answer:y

Step-by-step explanation:

Answer:

16 units.

Step-by-step explanation:

Using the hypotenuse formula (a^2 + b^2 = c^2) we can determin that AB and BC is 5 units long, now we add AB, BC and AC together and we get 16.