Mathematics High School

Select the equalities that are true.
A. sin(90°) = cos(90°)
B. sin(81°) = cos(9°) C.sin(50°) = cos(40°)
D.sin(32°) = cos(68°)

Answers

Answer 1

Answer:

So the answer is C.

Step-by-step explanation:

Related Questions

help i’ll give brainliest

Answers

Answer:

I think its 4.5

Step-by-step explanation:

area is length × width

Please Help Me!!!! qwq

Answers

Answer:

We add 25 and subtract 25 to complete the square.

[tex](x+5)^{2}-38=0\\[/tex] is the equation we get.

Step-by-step explanation:

[tex]x^{2} +10x-13=0\\x^{2} +10x+25-13-25=0\\(x+5)^{2}-38=0\\[/tex]

So, we're adding 25-25 to complete the square.

Reflection across the x-axis M(0,-1) S(3,2) Q(5,-3)

Answers

Feeed me pls ima. Baby goo goo Gaga with extra chipotle beans a babehebdheh slope of 8393

Expand the expression: 7(10s-10)

Answers

Answer: 70s - 70

Step-by-step explanation:

Answer:

70s-70

Step-by-step explanation:

I just distributed the seven, so

7*10s=70s

7*-10=-70

70s-70

The solution shown for the equation is incorrect. What is the correct​ solution? What is the​ error?
-6(5 - r) = 18
-30 - 6r = 18
-6r = 48
r = -8
The solution is ___
​(Type the value of​ r.)

Answers

Answer: they did not distribute correctly,  it should be plus 5r not -5r

r =9

Step-by-step explanation:

Error Analysis The solution shown for the equation is

incorrect. What is the correct solution? What is the error?

- 5(3-r) = 30

- 15 - 5r = 30

- 5r = 45

r = -9

The solution is

(Type the value of r.)

2

SEE ANSWERS

Answer

4.0/5

4

they did not distribute correctly,  it should be plus 5r not -5r

r =9

What is the value of x?

Answers

Answer:

x=23

Step-by-step explanation:

A and D are equal to eachother so you write the equation (x-4)=19. To solve all you have to do is add 4 to each side and you will get the answer of x=23

can 35/40 be simplified​

Answers

Answer:

yes

Step-by-step explanation:

_11) f(x) =
A. O
B. 00
C.-00
D. 1

Answers

the correct answer is d

11/14+(-1/4)

pls help me.


give the anwser as a reduced,proper or improper fraction.

Answers

Answer:

15/28 or 0.53 decimal form

Step-by-step explanation:

11/14 + (-1/4)

11/14 + -1/4

= 15/28 or 0.53 decimal form

Answer:

11/14 + (-1/4) = 15/28

i am not sure

HELP HELP HELP plsss!

Answers

Answer:

Step-by-step explanation:

y = 4x + 3

y - 4x = 3

-4x = 3 - y

-4x/-4 = 3/-4 - y/-4

x = -3/4 + y/4

PLEASE HELP ME ASAP THIS IS DUE IN LESS THEN A HOUR PLEASE
Figure D is in Quadrant II. It is reflected across the x-axis. Then figure D' is rotated 90° counterclockwise around the origin to form figure D". Then figure D" is translated 4 units to the left to form figure D'". Decide if each statement about the figures is true or false. Choose True or False for each statement. *
4 points
true False
Figure D'' is in Quadrant II
Figure D' is in Quadrant III
The x coordinates for vertices D''' are all negative
The y coordinates for vertices D'' are all positive
Figure D'' is in Quadrant II
Figure D' is in Quadrant III
The x coordinates for vertices D''' are all negative
The y coordinates for vertices D'' are all positive

This question requires one


Answers

Answer:

4

Step-by-step explanation:

because im smart

5. Find the polygon that is similar to ABCD.
A.
B.
B
12
18
2
2.
6
C.
2
D.

Answers

Answer:B

Step-by-step explanation:

Brian and Emily are testing different paper airplane designs to see which will allow a plane to go the farthest. Emily folds her plane and attaches a paperclip to the front of it. After she throws the plane, it travels about fifty feet and then starts to fall to the ground. Why does the plane eventually fall to the ground?


The force of air resistance stops acting on the plane.


The plane was not designed to carry a load like a paperclip.


The force of gravity is greater than the force keeping the plane in the air.


The paperclip creates a magnetic force that attracts the plane to the ground.



and actually answer it, answers will be reported if you put random letters.

Answers

Answer:

It will be B I guess

Boris has 20 CDs in his music collection. Given that 20% of the CDs are rock music and 60 % of the CDs are pop music, how many CDs are other type of music? Show your work,

Answers

4 CDs are other types of music, because
20% of rock music is 4
60% of pop music is 16
20 - 16 - 4 = 4.

Budding and sporulation are forms of ________ reproduction.

Answers

Answer: Asexual

Step-by-step explanation:

PLEASE HELP FAST
i need to know how to solve this with work

Answers

Answer:

2.999

Step-by-step explanation:

the equation for the cross section of a parabolic satellite television dish is y=1/50x^2 measured in inches, how far is the focus from the vertex of the cross section?

Answers

Answer:

12.5 inches

Step-by-step explanation:

Given the equation for the cross section of a parabolic satellite TV dish:

y=1/50x^2

Equation of a parabola :

(y - k) = 1/4p * (x - h)^2

Distance of the focus from the Vertex = p

Comparing both equations :

1/4p * (x - h)^2 = 1/50 * x^2

4p = 50

Divide both sides by 4

4p/4 = 50/4

p = 12.5 inches

URGENT I NEED HELP!
you will earn brainlest with this one as well

Answers

Answer:

the third one is your answer

Answer:

the answer is c

Step-by-step explanation:

trust me

Find the output of the function y = 6x + 4 if the input is 2.

Help please

Answers

Step-by-step explanation:

y=6(2)+4

y=12+4

y=16

this is the answer

A nutrition bar includes fat and protein in the ratio of 3:5. There are a total of 24 grams of fat and protein combined in the bar. If there are 9 calories per gram of fat and 4 calories per gram of protein, how many calories from fat and how many calories from protein are in the nutrition bar?

Answers

Let, amount of fat is 3x .

So, amount of protein is 5x .

It is given that sum of fat and protein is 24 grams.

3x + 5x = 24

8x = 24

x = 3 grams

Amount of fat is, F = 3×3 = 9 grams .

Amount of protein is, P = 5×3 = 15 grams.

Calories in fat, F = 9×9 = 81 calories .

Calories in protein, P = 15×4 = 90 calories .

Therefore, calories from fat and protein is 81 and 90 respectively.

Hence, this is the required solution.

Zoe wrote Three-fifths of her essay in 30 minutes. Assuming she wrote the paper at a constant rate the entire time, which expression can be used to determine the fraction of her essay she wrote each minute?

Answers

Answer:

5/3 divided by 30.

Step-by-step explanation:

In doing unit test on edge.

Answer:

Three-fifths divided by 30

Step-by-step explanation:

I did the unit test and got it right :D

48 students
12 teachers
x students
1 teacher
X =


Answers

Answer:

4 students per teacher

Step-by-step explanation:

its a ratio I think if not then a unit rate but still its 4 because u divide 48 by 12 and then use that number per teacher

660hm=__________m


help me please

Answers

Answer:

660 HM = 66000 M

Step-by-step explanation:

1 hectometer to meter = 100 meter

5 hectometer to meter = 500 meter

10 hectometer to meter = 1000 meter

20 hectometer to meter = 2000 meter

30 hectometer to meter = 3000 meter

40 hectometer to meter = 4000 meter

50 hectometer to meter = 5000 meter

75 hectometer to meter = 7500 meter

100 hectometer to meter = 10000 met

66000 m is the answer

Write out the equation in Mx+b

Answers

Answer

y= 3/2 x  - 2

Step-by-step explanation:

so you have to find the slope which would be

m =  

y2 - y1

x2 - x1

then you find you points that you are using (2, 1) and (0, -2)

when you plug it in it is

m=

-2-1

0-2

you simplify the numbers and get rid of the negatives to get m=3/2 x

then your y intercept is where your line meets the y axis or wherever x=0

so your y intercept is (0, -2) so the b = -2

The solution to the system is (6,2). Select all the equations that could be the other equation in the system.
A. y=-3x
B. Y=-3/2x+6
C. Y=-1/6x+3
D. Y=2/3x-1
E. Y=1/2x-1
F. Y=4x-2

Answers

Answer:

C and E

Step-by-step explanation:

I just took the test and got a 100%  :)

This question is based on the system of equation. Therefore, the correct options are (C) i.e. y=-1/6x+3 and (E) i.e.  y = 1/2x-1, are the equations of solution to the system is (6,2).

Given:

The solution to the system is (6,2).

We need to select all the equations that could be the other equation in the system.

For solving this question, we will be putting the given co-ordinates in the  given options and check.

A. y = - 3x

Putting the co-ordinates (6,2).

We get,

2 [tex]\bold{\neq}[/tex] -18

B. y=-3/2x+6

Putting the co-ordinates (6,2).

We get,

2 [tex]\bold{\neq}[/tex] -3

C. y=-1/6x+3

Putting the co-ordinates (6,2).

We get,

2 = 2

D. y=2/3x-1

Putting the co-ordinates (6,2).

We get,

2 [tex]\bold{\neq}[/tex]3

E. y=1/2x-1

Putting the co-ordinates (6,2).

We get,

2= 2

F. y=4x-2

Putting the co-ordinates (6,2).

We get,

2[tex]\bold{\neq }[/tex] 22

Therefore, the correct options are (C) i.e. y=-1/6x+3 and (E) i.e.  y=1/2x-1, are the equations of solution to the system is (6,2).

For more details, prefer this link:

https://brainly.com/question/24065247

−12x+4y=6 represents a function. true or false

Answers

Answer:

true

Step-by-step explanation:

Order the numbers from least to greatest

Answers

.66 = .667 = 2/3 = 66.1

Boom! Least to greatest

66 66.1 2/3 0.667 is ur answerrrrr

Writing a Linear Equation Given Two Points

Write a linear equation for the line that passes through the given points.

Answers

Answer:

y=-3x+5

Step-by-step explanation: y=mx+b

to find slope (m) use the equation [tex]\frac{y2-y1}{x2-x1} \\[/tex]

so

[tex]\frac{-10-(-1)}{5-2}[/tex] = -3

to find b

use y=mx+b

-1=-3(2)+b

-1=-6+b

5=b

Hope this helps :)

Answer the following question. Will give brainliest to best answer.

Answers

9514 1404 393

Answer:

  see below

Step-by-step explanation:

The graph is constant above and below the piece that is graphed. The graph is continuous, so we don't need to put any open or closed dots anywhere. (If you wanted, you could put closed dots at the ends of the piece shown--just to reinforce that the function is defined at those turning points.)

At age 25, Gherman Titov was the youngest person to travel into space. This is 52 years less than the oldest
person to travel in space, John Glenn. How old was John Glenn? Use the bar diagram to help write and solve an
equation.

Answers

Answer:

77 years old

Step-by-step explanation:

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