Mathematics High School

plz solve this question urgent ​

Plz Solve This Question Urgent

Answers

Answer 1

9514 1404 393

Answer:

  2/15

Step-by-step explanation:

The given expression for θ can be rewritten to ...

  5sin(θ + arctan(-3/4)) = 0

This will have solutions ...

  θ +arctan(-3/4) = nπ

  θ = nπ - arctan(-3/4) = nπ + arctan(3/4)

__

The corresponding values of sine and cosine will be ...

  sin(arctan(3/4)) = 3/5

  cos(arctan(3/4) = 4/5

or both values may be negative. Either sign will give the same result in the expression we're to find.

  (2sin(θ) -cos(θ))/(sin(θ) +3cos(θ)) = (2(3/5) -(4/5))/(3/5 +3(4/5))

  = ((6 -4)/5)/((3+12)/5) = 2/15

  [tex]\boxed{\dfrac{2\sin\theta-\cos\theta}{\sin\theta+3\cos\theta}=\dfrac{2}{15}}[/tex]

Related Questions

-3(y - 6)


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

Answers

Answer:

-3y+18

Step-by-step explanation:

-3 x y = -3

-3 x -6 = 18

-3y + 18

Hope that helps!

Which expression is equivalent to (44)2 . (47) 2? A. 1 46 1 1 B. 43 C. 411 D. 430 ​

Answers

Answer:

67

Step-by-step explanation:

i dont know

pls help me! 15 points

Answers

Answer:

1.414

Step-by-step explanation:

16 teams qualify for a tournament. How many possible ways can the final game (2 teams) be played?

Answers

Answer:

120

Step-by-step explanation:

so we have 16 teams and we are chosing two

so this formula is called the chose formula

and the formula is 16*(16-1)/2!=16*15/2=120

Explain the effect of reflecting an angle.

Answers

If the angle between the mirror and the incident ray increases, the angle of incidence will decrease accordingly.
And if angle of incidence will decrease, angle of reflection will also decrease.
As we know from laws of reflection, angle of incidence is equal to angle of reflection

Find the value of the expression 3m2 + 2p2 − 15 when m = 3 and p = 10

Answers

Answer:

43

Step-by-step explanation:

you plug in the values

3m^2 + 2p^2 - 15

= 3(3)^2+2(10)^2-15

= 3×9+2×100-15

= 27+200-15

= 227-15

= 212

Just subtitute the value of m and p to the equation

Hope it help u :)

debra can run 20 miles in 2 hours. how many miles per hour can she run

Answers

Answer:

10 miles per hour

Step-by-step explanation:

20 divided by 2 = 10

SOMONE PLZZZ HELLLLLPP, it’s due tonight

Answers

Answer:

the triangle consists 180 degree

so , açording to me the must be like this

Step-by-step explanation:

hope it becomes helpful to you ☺️☺️

good luck

I got carried away I need a lil help.

calculate 57% of $295 to the nearest cent​

Answers

Answer:

168.15

Step-by-step explanation:

100%-> 295

57%->168.15

HELP, PLEASE, WILL GIVE BRAINLIEST
At the local pet store, zebra fish cost $2.10 each and neon tetras cost $1.85 each. If Marsha bought 13 fish for a total cost of $25.80, not including tax, how many of each type of fish did she buy?

Answers

The answer would be B
Because $2.10×7 = 14.7 and $1.85×6 = 11.1 so the new were add 14.7+11.1 Hope this helps

find the value of x so f(x)=13
f(x)=3x+4

Answers

Answer:

43

Step-by-step explanation:

3(13)+4= 43

a town had about 2120 acres of pine trees about 40 years ago. only 13% remain. How much trees are left

Answers

Answer:

275.6

(275 for whole trees)

Step-by-step explanation:

3 Multiple Choice Questions. Please answer..
3. Find m∠Q
4. Find m∠1
5. Find m∠3

Answers

Answer:

3)      (N)  angle Q = 90 degrees

4)      (E)  angle 1 = 88 degrees

5)      (G)  angle 3 = 110 degrees

Step-by-step explanation:

3) angle Q = 1/2(270-90) = 90

4) central angles equal arc angles

5) angle supplemental to angle 3 is 1/2(140), so angle 3 = 180-70 = 110

What is the determinant of H=

Answers

Answer:

The answer is -7

Step-by-step explanation:

I took the test! Hope this helps <3

what is the simplified form of each expression?
question 1: 3x+7x+2x A. 12x B. 10+2x C. 12+5x D. 10x
question 2: 2(8x) A.16x B.2(8)+2(x) C.10+x D.10x
question 3: 4(3x+2y) A.20x B.12x+8y C.20xy D.12x+2y​

Answers

Answer:

Question 1: 12x

Question 2: 16x

Question 3: 12x+8y

Step-by-step explanation:

Answer:

1. A. 12 x

2.A. 16x

3. B. 12+8y

20. Find the common ratio of the following sequence:
500, 100, 20.4,

Answers

Answer:

100/500 = 0.2

common ratio is 0.2

HELP ME PLEASE!!!DONT ANSWER IF YOUR JUST TRYING TO GET POINTS!!PLEASE.

Answers

9514 1404 393

Answer:

17.27 miles aroundabout 23.75 square miles

Step-by-step explanation:

a) The circumference of the circle is given by ...

  C = πd

  C = (3.14)(5.5 mi) = 17.27 mi

The distance around the lake is about 17.27 miles.

__

b) The area is given by ...

  A = πr^2 . . . . . where r = d/2

  A = (3.14)(2.75^2) ≈ 23.75 . . . . square miles

The surface area of the lake is about 23.75 square miles.

_____

If you use a more exact value of pi (the "pi button" for example), then the hundredths digit increases by 1 in each case: 17.28, 23.76.

The original price p of an item less a discount of 60%

Answers

Answer:

p - p(.60)

Step-by-step explanation:

to find 60% of p you turn 60% into a decimal, which is .60, next you multiply .60 by p which will give you 60% off of p,

finally you take the total which is p and subtract off the discount which is .60p, thus p-p(.60)

also... another way to solve this is that if you are getting 60% off that means you are paying 40% of the price, thus you could just multiply p(.40) to get the amount the person would actually pay

help me please if you get it right ill give you brainlist.

Answers

Answer:

104in

Step-by-step explanation:

Square: 4 * 4 = 16in

Triangle: 4 * 4 = 16 / 2 = 8in

Rectangle: 8 * 10 =  80in

Add them all together

16in + 8in + 80in = 104in

Alycia has $10 to use for some new school supplies. She wants to buy a
binder for $2.79, a package of markers for $1.25 and 2 packs of ink pens for
$ 1.96 each. How much change should she get? *

Answers

Her change will be $2.04

solve for y
3x+1/5y=7

Answers

Answer:

y = -15x + 35

Step-by-step explanation:

3x + 1/5y = 7

1/5y = -3x + 7

y = 5( -3x + 7)

y = -15x + 35

Maria fills a 1/4 measuring cup 3 times with sugar a 1/3 measuring cup 4 times with flour and 1/2 measuring cup 3 times with water. How many total cups of ingredients did Maria use altogether?

Answers

Answer:

hope this helps

Step-by-step explanation:

1/4×3=3/4

1/3×4=1 1/3

1/2×3=1 1/2

now add all the fractions together

Answer:

She used 43/12 or 3 7/12

Step-by-step explanation:

Learned this during math class and this was the exact problem. Have a good day:)

A line contains points (1, 3) and (5,0). What is the slope of the line?


Answers

Answer:

B= -3/4

Step-by-step explanation:

there are two points given substitute them in the formula of the slope

PLEASE ANSWER THIS FAST!

Answers

Problem 3

Answer: x = 47

Explanation: The angles opposite the congruent sides, are congruent angles. We consider these the base angles. This triangle is isosceles.

==================================================

Problem 4

Answer: x = 32

Explanation:

Refer to the diagram below. Note how I've added in the variable y and marked another angle as 53 degrees which is one of the base angles of the left triangle. The base angles of the triangle on the right are y degrees each. Also, note the vertical angles both are y.

For the left triangle, the three angles add up to 180 which means we can solve for y to go from 53+53+y = 180 to y = 74

Then the interior angles of the triangle on the right has the three angles (y,y,x) add to 180 as well. So we have y+y+x = 180 which turns into 74+74+x = 180. That solves to x = 32

==================================================

Problem 5

Answer:  x = 58

Explanation:

Refer to the diagram below. I've added another base angle x, and the angle 90-x is complementary to this. This is because the two pieces must add to 90.

For the triangle on the bottom, the two base angles 74 and 74, add to the third angle 90-x and we would get 180. So we solve 74+74+(90-x) = 180 to get x = 58

Answer:

3. x = 47

4. x = 32

5. x = 58

Step-by-step explanation:

Im supposed to find angles for these, and I don't know on how to do that

Answers

Answer:

110

Step-by-step explanation:

They are equal to each other.

23x-5= 21x +5

2x = 10

x = 5

21(5) +5 = 110°

23(5) -5 = 110°

So it works. Angles are 110°

Which expression represents the following calculation?
Add 450 to 348, and then multiply by 7.
o
A. 450 + 348 x 7
B. (450 + 348) 7
C. 450 x 7 + 348
O D. 450 * (7 + 348)

Answers

Answer is B, it says to add the two numbers so you have to put them in parentheses and put the seven outside

An expression that represents the given calculation is (450 + 348) × 7

The correct answer is an option (B)

What is an expression?

"It is a combination of numbers, variables and some mathematical operations."

What is BODMAS?

It is an acronym and it stands for Bracket , Order , Division , Multiplication , Addition and Subtraction .

In this question ,

its been said to first add then multiply

First add 450 to 348

(450 + 348)

now multiply the result with 7

(450 + 348  ) × 7

Therefore, an expression that represents the given calculation is (450 + 348) × 7

The correct answer is an option (B)

Learn more about BODMAS

https://brainly.com/question/23827397

#SPJ2

PLZ HELP ASAP
Find the value of the variable.

A. -37

B.31

C.43

D.155

Answers

Answer:

B.31

Step-by-step explanation:

That's the answer.

Answer:

x = 31

Step-by-step explanation:

By Linear Pair

3x + 31 + 2x - 6 = 180

5x + 25 = 180

5x = 155

x = 31 Answer

Find X Y and Z for brainliest

Answers

Answer:

12 z

22.5x or 3 meybe

where Y?????

Step-by-step explanation:

Answer:

Step-by-step explanation:

I'm going to assume that y is the length of the red line.

9x+ 1 =x+ 9
the solution is x=

Answers

Step-by-step explanation:

9x + 1 = x + 9

9x - x = 9 - 1

8x = 8

x = 1

X is 1 because we can minus x fro. Both sides and 1 from both sides to get 8x equal to 8

You order a 119 pound couch suppose you use 1 day shipping instead of 3 to 5 day shipping how much more will you pay

Answers

119 + 1 + 3 + 5 =            add that if i am wrong sorry but have  a nice day <3

Step-by-step explanation:

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