Please help I need to get this done please help me

Answer:

what? it seems like you just spammed anything from the web O_o

Step-by-step explanation:

Answer: w = -9/4

Step-by-step explanation:

Answer:

The approximate value of [tex]f(\theta) = \frac{\sec \theta \cdot (\sec \theta+\tan \theta)}{1+\tan^{2}\theta}[/tex] is 1.366.

Step-by-step explanation:

Let [tex]f(\theta) = \frac{\sec \theta \cdot (\sec \theta+\tan \theta)}{1+\tan^{2}\theta}[/tex], we proceed to simplify the formula until a form based exclusively in sines and cosines is found. From Trigonometry, we shall use the following identities:

[tex]\sec \theta = \frac{1}{\cos \theta}[/tex] (1)

[tex]\tan\theta = \frac{\sin\theta}{\cos \theta}[/tex] (2)

[tex]\cos^{2}+\sin^{2} = 1[/tex] (3)

Then, we simplify the given formula:

[tex]f(\theta) = \frac{\left(\frac{1}{\cos \theta} \right)\cdot \left(\frac{1}{\cos \theta}+\frac{\sin \theta}{\cos \theta}\right) }{1+\frac{\sin^{2}\theta}{\cos^{2}\theta} }[/tex]

[tex]f(\theta) = \frac{\left(\frac{1}{\cos^{2} \theta} \right)\cdot (1+\sin \theta)}{\frac{\sin^{2}\theta + \cos^2{\theta}}{\cos^{2}\theta} }[/tex]

[tex]f(\theta) = \frac{\left(\frac{1}{\cos^{2}\theta}\right)\cdot (1+\sin \theta)}{\frac{1}{\cos^{2}\theta} }[/tex]

[tex]f(\theta) = 1+\sin \theta[/tex]

If we know that [tex]\sin \theta =\frac{\sqrt{3}-1}{2}[/tex], then the approximate value of the given function is:

[tex]f(\theta) = 1 +\frac{\sqrt{3}-1}{2}[/tex]

[tex]f(\theta) = \frac{\sqrt{3}+1}{2}[/tex]

[tex]f(\theta) \approx 1.366[/tex]

Answer:

A.

Step-by-step explanation:

B.  (-1,1) (-1,-5)  ... can't pass vertical line test

C.  (-1,7) (-1,1)

D. (3,2) (3,4)

Answer:

  1/5

Step-by-step explanation:

  medium = (1/2)(blue sale) = (1/2)(3/5)(blue) = (1/2)(3/5)(2/3)(all t-shirts)

  medium = 1/5(all t-shirts)

One-fifth of the shop's T-shirts are size medium blue shirts on sale.

Answer:

It will take him 3 minutes

Step-by-step explanation:

Jacob babysat for 4.5 hours 12x4=48 +6(.5)= 4.5 hours

Answer:

A

Step-by-step explanation:

Getting closer together means that both are becoming more accurate.

A valid model is such model whose calculated value approximates to the actual value. If it doesn't approximate to the actual value, it must be close to the actual value.

The model is valid if the results from the survey are close enough, together.

Given that:

[tex]p_1 = 75\%[/tex] -- the actual estimation of satisfied students

[tex]p_2 = 70\%[/tex] -- the second estimation of satisfied students

For a model to be valid, the calculated value must be close to the actual value.

If after Mateo's survey of more students, the result of satisfied or very satisfied students is still close to 75%, then Mateo's model is valid.

If otherwise, then the model is invalid.

Read more at:

https://brainly.com/question/731147

Answer:

(6,2)

Step-by-step explanation:

i used elimination method

Hello!

[tex]\large\boxed{2x + y = 3}[/tex]

Begin by finding the slope that would be perpendicular to the given equation.

A perpendicular line has a slope that is the opposite reciprocal of the original. Therefore:

1/2 --> -2

Find the answer choice that contains a slope of -2 when rewritten in the form y = mx + b:

Choice 1:

x + 2y = 2

Move x to the other side:

2y = -x + 2

Divide both sides by 2:

y = -1/2x + 1. This choice is incorrect.

Choice 2:

x - 2y = -12

Move x to the other side:

-2y = -x - 12

Divide both sides by -2:

y = 1/2x + 6. This choice is incorrect.

Choice 3:

2x + y = 3

Move 2x to the other side:

y = -2x + 3. This contains a slope of -2, which is correct.

Choice 4:

y - 2x = -5

Move -2x to the opposite side:

y = 2x - 5. This contains a slope of positive 2, so it is incorrect.

The correct answer is 2x + y = 3.

Answer:

D. y-2x=-5

Step-by-step explanation:

Answer:

Step-by-step explanation:

here you go mate

Question 8

step 1

7d-5+9c-c-3-4d   equation

step 2

7d-5+9c-c-3-4d  expand equation

7d+-5+9c+-c+-3+-4d

step 3

7d+-5+9c+-c+-3+-4d  combine terms

answer

8c+3d-8

Question 9

step 1

5h+3-9g+h-g+7  equation

step 2

5h+3-9g+h-g+7  expand

5h+3+-9g+h+-g+7

step 3

5h+3+-9g+h+-g+7  combine the terms

answer

-10g+6h+10

can i have brainliest if you dont mind?

Answer:

43.407 years

Step-by-step explanation:

Zoe invest $600 in college savings account. The account earns 5.7% interest compounded quarterly. How many years will it take for Zoe's account to reach $7,000?

We are asked to find time t in a compound interest formula

The formula is given as:

t = log(A/P) / n[log(1 + r/n)]

A = Total amount = $7000

P = Principal = $600

n = number of times interest is compounded = Quarterly =4

r = Interest rate = 5.7% = 0.057

Hence,

t = log(7000/600) /4[log (1 + 0.057/4)]

t = 43.407 years

Answer:

x=7

Step-by-step explanation:

if you look at this diagram as 2 triangles, the little one, and then the big one that the little one is inside of, and realize that they are similar triangles (by AAA standards) you can use a ration to solve the answer. the side length 9 is the length that is similar to side length 21, so you put those in a fraction format (9/21), and side length 3 is similar to side length x so you put those in a fraction (3/x), and then you create a ration with those

9/21=3/x

now you can cross-multiply 21 times three (63) and divide that number by 9 (7) to get your final answer of x=7.

Hope this helps!

Answer: Greater than

Step-by-step explanation:

36/0.6 = 60

60 is more than 36

Answer:

10 losses

Step-by-step explanation:

Here, we want to get the greatest possible number of games the team lost

Let the number of games won be x

Number drawn be y

Number lost be z

Mathematically;

x + y + z = 38

Let’s now work with the points

3(x) + 1(y) + z(0) = 80

3x + y = 80

So we have two equations here;

x + y + z = 80

3x + y = 80

The greatest possible number of games lost will minimize both the number of games won and the number of games drawn

We can have the following possible combinations of draws and wins;

26-2

25-5

24-8

23-11

22-14

21-17

21-17 is the highest possible to give a loss of zero

Subtracting each sum from 38, we have the following loses:

10, 8, 6, 4, 2 and 0

This shows the greatest possible number of games lost is 10

Answer: each get 2,000 mil in use

Step-by-step explanation:

Answer:

slope is 3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

Step-by-step explanation:

a.b.c.e

im not sure don't hate me

Answer:

c=ab/2y

Step-by-step explanation:

y=ab/2c

to get rid of the denominator we divide by 2c.

(y=ab/2c)2c

2cy=ab

now we need to get rid of the 2y from the c to isolate it. in order to do this, we must divide by 2y.

Doing this we get c=ab/2y

9514 1404 393

Answer:

  c = (ab)/(2y)

Step-by-step explanation:

The given equation can be multiplied by c/y to solve for c.

  [tex]y=\dfrac{ab}{2c}\\\\y\cdot\dfrac{c}{y}=\dfrac{ab}{2c}\cdot\dfrac{c}{y}\\\\\boxed{c=\dfrac{ab}{2y}}[/tex]

_____

Comment on the form of the answer

When the answer is written in plain text, the fraction bar no longer serves as a grouping symbol. Hence, parentheses are needed around the denominator:

  c = ab/(2y)

Answer:

Idkasd

Step-by-step explanation:

Keep trying

Answer:

the x-intercept is (-4,0)

the y-intercept is (0,-7)

Answer:

and what are you needin to find out

Step-by-step explanation:

Answer:

49.8 calories were left!!!

Step-by-step explanation: Just subtract 91-41.2!

Answer:

35.09hours

Step-by-step explanation:

Since we are not told what to find, we can as well look for the time it took to ascend

Given

Distance below surface of water = 2000m

Speed = 57m/hr

Required

Time

Using the formula;

Speed = Distance/Time

Time = Distance/Speed

Time = 2000/57

Time = 35.09hours

Hence it took 35.09hours to ascend

E. No, there may be other differences between the two years besides the grades.

This is because every kid is different and Mr. Smith might have just gotten a better group of kids the second year. This is just one factor of many viable options.

May I have brainliest please? :)

Answer:

w+1.3=2.7

Step-by-step explanation:

the length of w+ the length of the other piece of tape (1.3) is equal to the length of the other tape which is 2.7

The answer is w+1.3=2.7  

Answer:

π/2

Step-by-step explanation:

Find the period of the graph shown below.

Total time to complete one oscillation is called the period.

The total number of oscillations in the graph is 7 oscillations:

Hence;

7 oscillations = 3π + π/2 = 7π/2

To get the period, we want to know thw angle it takes to complete just one oscillation that is;

1 oscillation = x

Divide both equations:

7/1 = (7π/2)/x

7x = 7π/2

14x = 7π

x = 7π/14

x = π/2

Hence the period of the wave is π/2