Mathematics High School

If sin(2x)=cos (x+30°), what is the value of x?

Answers

Answer 1

Answer:

x=20

Step-by-step explanation:

Please mark as brainliest

If Sin(2x)=cos (x+30), What Is The Value Of X?

Related Questions

find the area of the circle 26 in. rounded to the nearest tenth

Answers

Answer:

πr²

22/7*13²

22/7*169

3718/7

531.145

to the nearest tenth

531.15inches

Which expression has a value of 15 when n=7

Answers

the answer is the last one, 19-28/n

Answer:

The last one

Step-by-step explanation: because the first is 8

And the second one is 16

And the third one is 14

The fourth one is 15

I got this answer because I plugged 7 in each of the equations for n

Give the product in simplest form:

Answers

Answer:

Step-by-step explanation:

4 7/8 .4 3/4= 7/2 . 3 =21/2

Answer:

23 5/32

Step-by-step explanation:

Convert both 4 7/8 and 4 3/4 into improper fractions:

the first becomes 39/8, and the second becomes 19/4. We then have:

39 19

------ * ----- which comes out to 23.15625, or 23 5/32

8 4

Can someone help me on this algebra question

Answers

Answer:

It is the last one

Step-by-step explanation:

Janice NEEDS 3 GALLONS of lemonade for a party. She has 4 quarts, 6 pints and 4 cups of lemonade already made. How many CUPS of lemonade does Janice have? Be sure to re-state the question when giving your answer.

Answers

Answer:

32 cups

Step-by-step explanation:

To find the total number of cups, we have to convert the measures that are not in cups to cups and add

1 quart = 4 cups

4 quarts = 4 x4 = 16 cups

1 pint = 2 cups

6 pints = 2 x 6 = 12 pints

total number of cups = 16 + 12 + 4 = 32 cups

determine if the following ordered pair is a solution to the system of linear equations.

Answers

I really don’t know

Out of 15,000 voters in a constituency, 60% voted. Find the percentage of voters who did not vote. Can you now find how many actually did not vote?

Answers

6000. By multiplying 15000 by 0.4 you can find the answer

Answer:

40 did not vote

6000 people did not vote

Step-by-step explanation:

1 % of 15,000 = 150

150 * 40 = 40% of 15,000 = 6000

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Calculate the area of the trapezoid, which is not drawn to scale.

Answers

Answer:

4 x 8 = 32

11 - 8 = 3

5 x 3 = 15

15 / 2

7.5

32 + 7.5 = 39.5

Step-by-step explanation:

Answer:

4 x 8 = 32

11 - 8 = 3

5 x 3 = 15

15 / 2

7.5

32 + 7.5 = 39.5

Write in simplest form: 25ab/(15b2) = _____

Answers

Answer:

5a/3b

Step-by-step explanation:

(5a)/(3b)

as long as b ≠ 0

When you flip a biased coin the probability of getting a tail is 0.2.
How many times would you expect to get tails if you flip the coin 240 times?

Answers

Answer:

Step-by-step explanation:

Multiply 0.2 × 240 = 48.

It's a very biased coin, so the outcome will be considerably less than the 120 we would expect from a fair coin.

Sandy has 4 horses, 2 cats, and 6 chickens. What percentage of Sandy's pets have two legs.

Answers

Answer:

50%

Step-by-step explanation:

only chickens have two legs, both horses and cats have 4 legs. So when you add all of the pets together you get 12. There are 6 chickens and 6/12 is 50%

8/12 or about 66.6% of Sandy’s animals have two legs

helpppppppppppppppppppp

Answers

D is the answer to this:)

HELP ME PLEASE ASAP!

Rewrite using a single positive exponent

(6^-3)^-9

Answers

1/(6^-3)^9 hope this helps :)

Are the graphs of y = -2x + 4 and y = (1/4)x -2 parallel, perpendicular, or neither? *

Answers

Answer: Neither

Step-by-step explanation:

For this to be paralell it would need to have the same slope. (They don't have the same.) For this to perpandicular it would have to reciporcal ( Ex: -2 reciporcal would -1/2 or 1/4 reciprocal would have to be 4)

Answer:

neither

Step-by-step explanation:

For two lines to be parallel, their slopes must be equal.

For two lines to be perpendicular, their slopes must have a product of -1. (The only exception is a vertical line and a horizontal line which are perpendicular, but the product of their slopes is not -1.)

When the equation of a line is written in the slope-intercept form,

y = mx + b,

m is the slope.

y = -2x + 4 has a slope of -2.

y = (1/4)x -2 has a slope of 1/4.

Clearly, -2 and 1/4 are not equal, so the lines are not parallel.

Now we find the product of the slopes.

(-2) * (1/4) = -2/4 = -1/2

The product of the slopes does not equal -1, so the lines are not perpendicular.

Answer: neither

x2 - 4x - 3=0, solve the quadratic equation

Answers

Answer:

-3/2

Step-by-step explanation:

Answer:

x=3,1

................

AWARDING BRAINLIEST
PLS HELP ME (please don’t just put something random.)

Answers

Answer:

the answer is 312 cm

I took the quiz

Simplify to a single power of 6:
66
x 62
Answer: 6
Submit Answer

Answers

Answer:

66 x 62 = 4092

Step-by-step explanation:

Whoever answers correctly gets brainliest

Answers

Answer:

25 miles

Step-by-step explanation:

175/7 = 25 miles

The jet will fly 25 miles in one minute.

The jet will fly 25 miles

Zoey is collecting Pokémon cards. She already has 50 cards and she buys 10 every week. How many weeks will it take her to collect 500?

Answers

10 weeks is the correct answer

Answer:

10 weeks

Step-by-step explanation:

Two tutors each earn $30 per hour. The first tutor worked 10 hours. The second tutor worked 14 hours. What total amount did the tutors earn?

Answers

$720.00

30×10=300

and

30×14=420

(you multiply the money with the amount of hours they spent working)

300

+ 420

----------

$720

hope this helps you out

what is the value of B and C?

Answers

Step-by-step explanation:

value of b is 73 (reason : sum of triangles)

a= 34 ( reason:180-73-73=34)

Answer: 73+73=146, 180-146= 34°

Step-by-step explanation:

b is parallel to 73, b= 73°

c = 34°

HELP PLEASE!!!! math questions:
1. Fill in the blanks to describe how you could identify the number of solutions to a system if you only
knew some points on each line.
Start by finding the _______________ of each line using the points.
Compare the slopes. If they are different, the lines _______________. This means there is
_______________ solution to the system.
You could also plot the points on a _______________ and use this to find the point where the
lines_______________.

2. . Identify the number of solutions from the description of the equations.
Two equations are the same on one side but different on the other. ANSWER:
One of the equations in the system can be rewritten so it is identical to the other equation.ANSWER:

3.Adding the equations in a system of equations can sometimes be helpful in solving a system of
equations. Explain why.

Answers

Answer:

1)Rate of change, intersect, one, graph, intersect (i'm not really sure but this is what i think the answers are for 1)

Step-by-step explanation:

The answer is in you brain sorry ;$

Kiran is playing a video game. He earns 3 stars for each easy level he completes and 5 stars for each difficult level he completes. He completes more than 20 levels total and earns 80 or more stars

Answers

Answer:

10 easy levels and 10 difficult levels

Step-by-step explanation:

Given data

let the number of easy levels be x

and the number of difficult levels be y

x+y= 20----------1

and

3x+5y= 80------2

from 1

x=20-y

put this in 2

3(20-y)+5y= 80

60-3y+5y=80

2y=80-60

2y=20

y= 20/2

y= 10

put y= 10 in 1

x+10=20

x=20-10

x= 10

Hence Kiran played 10 easy levels and 10 difficult levels

first person who answers something gets brainliest

Answers

Answer:

thanks for the points! have a wonderful day! ☺☺☺☺☺☺☺☺⭐⭐⭐⭐⭐⭐

find the value of X, please!

Answers

Answer:

x=42°

Step-by-step explanation:

We know that 2 of the legs are congruent, so the angles opposite them will be congruent.

The angles of a triangle add up to 180°

This can be represented by [tex]96+2x=180[/tex]

[tex]2x=84[/tex]

[tex]x=42[/tex]

Hope this helps :-)

Answer: 42 degrees

Step-by-step explanation: Since this is an isosceles triangle, your remaining two angles will be equal

There are 180 degrees in any triangle

Since you have already used 96 degrees, you must subtract to find what is remaining

180-96=84

Since your remaining two angles are equal, you can half 84 to find your answer

84/2=42

Both x and your one remaining angle should be 42

X=42

Which equation shows the commutative property of addition?
A) 4 + -4 = 4+ -4
B) x(4 + 4) = 4 (x +4)
C) 4 + 2 + 3 = 3 + 2 +4
D) 4 +2 = 6

Answers

Answer:

Step-by-step explanation:

You are selling tomatoes. You have already earned $16 today. How many additional pounds of tomatoes do you need to sell to earn a total of $60

Answers

Six in total darling.

What is the correct formula of the 3D shape below?

V= 4/3 π r³
V= 1/3 π r² h
V= π r² h

Answers

Answer:

V= π r² h

Step-by-step explanation:

5 2/3 divided by 3/2

Answers

Answer:

3 7/9

Step-by-step explanation:

The diagram shows a 140° sector in a circle of radius 8 units.

What is the approximate area of the shaded sector?
A) 25 square units
B) 67 square units
C) 78 square units
D) 156 square units

Answers

Answer: 78 square units

Step-by-step explanation:

Other Questions

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Because he knows his parents do not care what he does, he simply does it without even asking them or leaving a note. His parents are fine with it and when he comes back just ask him whether he had a good time.Scenario Three: Dennis is the parent of Miranda, age fifteen. She wants to go to a party at her friend's house after the school football game on Friday night. Dennis does not want her to go and tries to talk her out of it, saying that he does not want her to drink or get into a car with someone who has been drinking. She insists, and he allows her to go the party against his better judgment because he does not want her to be angry or upset with him.Scenario Four: Mia and Kevin are the parents of Jason and Brian, seventeen-year-old twins. The twins ask if they can skip piano lessons this week in order to attend a friend's orchestra concert. 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