Mathematics High School

4. Which trigonometric expression is equal to cos 72°? A. cos 55° B. cos 50° C. sin 61° D. sin 18°​

4. Which Trigonometric Expression Is Equal To Cos 72? A. Cos 55 B. Cos 50 C. Sin 61 D. Sin 18

Answers

Answer 1

Answer:

D.  sin 18°

Step-by-step explanation:

sin 18 because 18 + 72 = 90

Related Questions

Math: If f(x) = 2x^2 - 5x - 15, what is f(-3)? *
O
24
42
18
3

Answers

Step-by-step explanation:

1 rst. 2 x2-5x-15 da 18 rest

find the value of the variable if necessary round your answer to the nearest tenth​

Answers

Answer:

x = 24.7

Step-by-step explanation:

Here, we want to find the value of x

To do this, we are to use the appropriate trigonometric ratio

From what we have;

9 faces the angle given as it is the opposite, x is below and it is the adjacent

The trigonometric identity that links opposite to adjacent is the tan which is the ratio of former to latter

Thus, we have that;

tan 20 = 9/x

x = 9/tan 20

x = 24.7

What is the slope of the line that goes through the points (12, 5) and (7, 2)

Answers

Answer:

3/5

Step-by-step explanation:

5-2 = 3

12-7 = 5

3/5

sarah needed 1 by 3 cup of flour to make 1 apple pie. I if she made 9 apple pies, how many cups of flour sarah need?​

Answers

Answer:

1/3 times 9 so just do that math and there's your answer ;)

Answer: do the math kid 1/3 times 9 theres your answer

Step-by-step explanation:

Can someone help me with this. Will Mark brainliest.

Answers

Answer:

(in degrees)

x = 15.09478709

Step-by-step explanation:

sin(x) = 25/96

Can someone please help I’m struggling!!!!!!!

Answers

Answer:

1.y=2x-1

2.y=-3/5x+4

3.y=-3x+2

4.y=-x+7

5.y=1/4x

6.y=-5/2x-3

Step-by-step explanation:

Slope-intercept form: y=mx+b

1. y=2x-1
2. y= -2/5x+4
3. y= -3x+2
4. y= -1x+7 or y=-x+7
5. y=1/4x+0 or y=1/4x
6. y= -5/2x-3

Hope this helps,
Good luck!

What is the solution to the system graphed below? How do you know?

Answers

Answer:

(1,7)

Step-by-step explanation:

It is where the line intersects. coordinates x axis 1, coordinates y axis 7.

A,B,C, or D?

__________

Answers

Pretty sure it’s A it crosses at positive 3 and goes 3up and 4 to the side

Javier can paint a room in 4 hours. Jasmine needs 6 hours to paint the same
room. Which equation would you use to determine how long it takes them to
paint the room if they work together?

Answers

Answer:

idfk im tryna find out as well

Step-by-step explanation:

boom bam bop, botta bop boop........ pow

why is 3 1/2 multipiled by x in the equation

Answers

Answer:

I don't know the equation, but I will assume that 3 1/2 is the slope.

Step-by-step explanation:

For example, in the equation y = 10x - 9, the slope is 10.

Answer:

3 1/2 x is multiplied by x In the equation because it is the coefficient, the number being multiplied by the variable

Step-by-step explanation:

A construction worker is placing rivets in a new bridge. He uses 42 rivets to build the first 32 feet of the bridge. If the bridge is to be 2200 feet in length, predict the number of rivets that will be needed for the entire bridge.​

Answers

Answer:

42 rivets=32ft of the bridge

1 ft of the bridge =42/32 rivets

2200 ft of the bridge =42/32×2200=2887.5

2887 and half

rivets that will be needed for the entire bridge.

Sole using distributive property 2(x-3

Answers

Answer:

2x-6=0

2x=6

x=6/2

x=3

..

How to simplify 12 to the 0 power

Answers

The answer is 1....................

Answer: 1

Step-by-step explanation:

Rule of thumb:

Anything to the POWER OF 0 will Always be 1

12^0=1

please help it will be helpful


Equivalent Ratio

9:36=
21:27=
48:72=
60:45=
10:70=​

Answers

1:4
7:9
5:9
4:3
1:7
Hope this helps :)

The ratio of the side length of a square to the square's perimeter is always 1 to 4. Peter drew a square with a perimeter of 28 inches.
What is the side length of the square Peter drew?

Answers

Answer:

7 inches

Step-by-step explanation:

Answer:

perimeter of square = 4x

= 4x = 28/4

x = 7 inches

PLEASEEEE HELP ME !
solve for t.
10 = -2t

Answers

Answer:

T = -5

Explaination:

Divide both sides of the equation by the same term and then simplify.

Answer:

-5

Step-by-step explanation:

10 = -2t

Divide both sides by -2

[tex]\frac{10} {-2} = \frac{-2t} {-2}[/tex]

-5 = t

Permutations
How many different six-letter words can be formed from the word SCHOOL?

Answers

Answer:

Se pueden formar 2520 palabras distintas de 7 letras con las letras de la palabra ESCUsil

Explicacion:listo :)

−x+3y=−15, 3x+3y=21 elimination

Answers

Answer: x= - 6/7, y= - 129/12

Explanation:

use the addition/elimination method to solve for x. then sub in and test then lastly, multiply everything by 7 to eliminate the fraction

A box has a height of 5 cm a Length
os 6 cm and a width of 2 cm
What is its volumes​

Answers

The box has a volume of 5x6x2=60cm^3

At the school carnival, Jade has a game booth with a spinner. The banner at her booth reads "20% chance of winning!" What is the chance that a player may not win?
40%
50%
80%
90%

Answers

Answer:

80 %

Step-by-step explanation:

100 % - 20 % = 80 %

Answer:

yea i took the test its 80%

Step-by-step explanation:

A triangular pane of glass has a height of 42 inches and an area of 546 square inches. What is the length of the base of the pane?

Answers

Answer:

Base = 26 in

Step-by-step explanation:

Recall the formula for the area of a triangle as:

Area = (Base x Height) / 2

In our case, this formula converts into:

546 in^2 = Base x 42 in /2

multiply both sides by 2 to get rid of fractions:

1092 in^2 = Base x 42 in

divide both sides by "42 in" to isolate the Base completely

1092 in^2 / 42 in = Base

Therefore Base = 26 in

can you solve this? what is sin 60

Answers

Answer:

Yo the answers B

√3/2

Step-by-step explanation:

Evaluate the expression when a = 3 and y=-3.
-a +6y

Answers

-3+6(3)=15
answer: 15

Subtract: (b^2 + 9 ab + 5a ) - ( 3b^2 -25ab + 1)

Answers

Answer:

- 2b^2 + 34ab + 5a - 1

Step-by-step explanation:

here's your solution

=> (b^2 + 9ab + 5a) - (3b^2 - 25ab + 1)

=> b^2 + 9ab + 5a - 3b^2 + 25ab - 1

=> - 2b^2 + 34ab + 5a - 1

hope it helps


Use Pythagorean Theorem to determine which set of sides can be the sides of a right triangle.
A. 3,4,5
B.4,4,8
C.6,6,12

Answers

The answer is A since: 3^2+4^2=5^2
25=25

Admission to the fair is $15 each ride cost $3 micah spent a total of $36 he spent all of his money on rides and admission

Answers

Answer:

7

Step-by-step explanation:

Admission cost = $15

Cost per ride = $3

Total amount spent = $36

We can obtain the number of rides thus :

Let number of rides = x

Admission cost + (cost per ride * number of rides) = total amount spent

15 + 3x = 36

3x = 36 - 15

3x = 21

x = 21 / 3

x = 7

Number of rides = 7

Question 3
Simplify by combining like terms.

3x + 4y − 2y + 7x
Question 3 options:

4x + 6y


10x + 2y


10x + 6y


2y + 4x

Answers

Answer:

10x +2y

Step-by-step explanation:

Good luck :) I hope you found this helpful!

Answer:

10x + 2y

Step-by-step explanation:

(3x + 7x) + (4y - 2y)

10x + 2y

Answer ASAP pls pls

Answers

D be the correct answer

On a day in the month of February the temperature in barrow Alaska is 221*f at the same time the temperature in northway Alaska is 213*f

Answers

Give the Full Question then I will solve it..

Pls answer and I will mark brainliest!

Answers

Answer:

C. 244°

Step-by-step explanation:

Angle formed by two tangents is equal to half of the difference of intercepted arcs:

m∠C = 1/2(arcAXB - arcAB)64° = 1/2(mAXB - mAB)mAXB - mAB = 128°

The sum of the same two arcs is a full circle:

mAXB + mAB = 360°

Add the two equations together:

2mAXB = 360° + 128°2mAXB = 488°mAXB = 244°

Correct choice is C

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