help please !! Given sin theta= 2/5
and 0°

Help Please !! Given Sin Theta= 2/5and 0

Answers

Answer 1

Answer:

C

Step-by-step explanation:

sinθ=[tex]\frac{2}{5}[/tex]

θ=sin⁻¹ ( [tex]\frac{2}{5}[/tex] )

θ=23.57817848

2θ=47.15635696

sin2θ=sin(47.15635696)=0.7332121112°≈ ((4[tex]\sqrt{21}[/tex])/25)


Related Questions

The sum of the digits of a given two digits the new numbers is 5 .if the digits are reversed, the new number is reduced by 27 . find the given number ​

Answers

Answer:. The numbers are 41 and 14

Step-by-step explanation: X and Y represent the digits. In the Tens place, the digit has 10× its base value. Therefore we can set up equations to model the information given:

10x+y = 10y + x +27

X + Y = 5

y =5-x rewritten to substitute for y

10x + 5-x = 10(5-x)+x +27

Distribute and then combine like terms:

9x +5 = 50 - 9x +27

Add 9x to both sides; subtract 5 from both sides.

9x +9x = 50+27-5

18x = 72 Combine like terms. Then divide both sides to solve for x.

x = 4

4+y=5 Substitute 4 for x; solve for y.

y=1

Substitute values of x and Y into the original equation and check.

40 +1 = 10 +4 + 27

41 = 14+ 27

True! 41=41

The numbers are 41 and 14.

This is correct right?

Answers

Answer:

Yes, it is not a diameter

Step-by-step explanation:

It's going through the circle (sphere) which makes it a diameter

I and D are not going straight through the middle

a and b are correct

Tell whether the triangle is right or not

Answers

Answer: Solved below...

Answer: Yes, that is a right triangle.

Step-by-step explanation:

To tell whether this is a right triangle or not you use a^2 + b^2= c^2

c is the hypotenuse the hypotenuse is the longest side of a right triangle, opposite the right angle. A and B can be either of the triangles sides.

To get this answer: 80^2+39^2 = 89^2

6400 + 1521 = 7921

7921=7921  

Since they are the same this IS a right triangle. Here is a little help for if the a question asks if you have a right acute or obtuse. To tell if you have an acute triangle the sign will be a greater than sign for ex) 180 > 169. If you have a obtuse triangle the sign would be a less than sign for ex) 120 < 200.

Here is a problem like that if you do not understand:

6^2 +12^2 = 13^2 ( remember c is the hypotenuse)

36+144= 169

180 > 169

Have a nice day!

5 Rectangles and 2/5 of the Rectangles Will Be Purple How Many Purple Rectangles Will She Need To Make 3 Scarfs?

Answers

Answer: 6

Step-by-step explanation:

Here's the complete question:

Olivia is making scarves. each scarf will have 5 rectangles, and 2/5 of the rectangles will be purple. how many purple rectangles does she need for 3 scarves.

Since each scarf have 5 rectangles, and 2/5 of the rectangles will be purple. The number of purple needed for each scarf will be:

= 2/5 × 5 = 2 purple

Therefore, the number of purple rectangles she need for 3 scarfs will be:

= 2 × 3

= 6

Pedro ordered a 6 footlong sub sandwich and plans to share it with his friends. If each portion is divided evenly in 3/5 of a foot, how many friends will Pedro share his sandwich with?​

Answers

Answer:

10

Step-by-step explanation:

You would divide 6 feet by 3/5 of a foot would would be .6 so 6/.6 would be 10

Find the product.


-0.3(4.1) =

Answers

Answer:

-1.23

Step-by-step explanation:

-0.3 x 4.1 = -1.23.

A negative number times a positive number equals a negative number.

-0.3(4.1) the answer is -1.23

can you please help me and explain how to do both of these problems, I don't understand​

Answers

I’m pretty sure for the second one you have to subtract 34 from 180 because all the angles in a triangle equal to 180. We know that the two angles are the same because of the hash marks. So 180-34= 146. Then, divide 146 by two because there are two equal angles left: 146/2=73. And that’s your answer. Oh also a tip: remember that those angles are acute which means they are less that 90 degrees

What is 0.82 as a fraction in simplest form?
(I also need the work if not its ok!)

Answers

Answer:

f 41/50

Step-by-step explanation:

I need some help I rlly appreciate it!!!!

Answers

Gogoprfdghkkhfyıpğo

ILL MARK U BRAINLIEST
At Kroger, milk costs $3.27 per gallon. Which equation best represents y, the total cost of x gallons of milk?

a. x = 3.27 + y
b. y = 3.27 + x
c. y = 3.27x
d. x = 3.27y

Answers

Answer:

C y=3.27x

Step-by-step explanation:

total cost = £3.27 times by the gallons

Step-by-step explanation:

B its B I had the same work and its B

function or not a function? justify your answer
domain:
range:
(please help!!! for both please!!!)

Answers

Answer:

function

Step-by-step explanation:

I got that answer correct on ed2020

Can I get some help with this is the Last question

Answers

Answer:

x = 11

Step-by-step explanation:

Here, we want to get the value of x

Let’s start by looking at the point U

Now, we can see angles on a straight line at that point

Mathematically, angles on a straight line are supplementary

What this mean is that they add up to 180

Now, the value of the angle that falls into the triangle on that straight line will be;

180-(11x + 12)

Now, we have all the angles of the triangle

Mathematically, the sum of all is 180 as the a sum of the angles of a triangle is 180

5x + 10 + 58 + 180-(11x+2 )= 180

5x + 10 + 58 -11x-2 = 0

-6x+ 66 = 0

6x = 66

x = 66/6

x = 11

Your middle school is having a carnival. Admission into the carnival is $8, and each game inside the carnival costs $0.50.
Part A: Which inequality represents the possible number of games, g, that can be played with $20?
A. 8g+0.50≤20
B. 8g+0.50≥20
C. 0.50g+8≤20
D. 0.50g+8≥20

Answers

The answer is C. You can only spend less than or equal to $20

A tree casts a shadow that is 7 feet long. A person nearby casts a shadow that is 3.5 feet long. The person is
5 feet tall. What is the height of the tree?

Answers

3 feet tall hope this helps:)

PLS someone help me find the slope it’s my last question

Answers

slope is 1

slope formula: y2-y1/x2-x1

4-3/0-(-1)

In quadrilateral PQRS, the exterior angle at Q measures 155 and PS = QR. What measure of ∠PSR would confirm that PQRS is a parallelogram?

Answers

Answer:

The measure confirming that PQRS would be 25

Step-by-step explanation:

It's easier if you draw it down.

1. We need to make this shape a parallelogram and the way we will do that is by making angle Q and angle S the same, because in parallelograms those opposite angles are required to be the same.  

                             \

                        155 \

P \ -------------------------\ Q

    \                         25 \

      \                               \     so that's your shape  

   S   \______________\ R

2.We were given that the exterior angle of Q measures 155, and since exterior and interior angles combined make 180, then we can assume that the interior angle of Q is 25.

3. As mentioned before, in a parallelogram, opposite angles are the same and  therefore PSR (which is just asking for the middle letter, S) is equal to 25 because Q is also 25.  

Fin in the table to convert the units of measure from milliliters to liters or liters to milliliters.


Milliliters. Liters

1


9
1,000
350​

Answers

1 millilitre = 0.001 litre

1 litre = 1000 millilitres

9 millilitres = 0.009

9 litres = 9000 millilitres

1,000 millilitres = 1 litre

1,000 litres = 1e+6

350 millilitres = 0.35 litres

350 litres = 350000 millilitres

HELP PLEASEE PLEASEE HELP ): ?

Answers

Answer:

They pass through origin

Step-by-step explanation:

Hope maka help

they are linear and they also pass through the origin.

The three angles of a triangle measure x+37, 90, and x+67. Find the measurement of the smallest angle in degrees.
Please help!!!

Answers

Answer:

The first angle is the smallest

Step-by-step explanation:

Step one:

given data

Angle 1= x+37

Angle 2= 90

angle 3= x+67

We know that the sum of angle in a triangle is 180

so

x+3+90+x+67= 180

collect like terms

2x+160= 180

2x=180-160

2x= 20

divide both sides by 2

x= 10

Step two:

so

Angle 1= 10+37= 47 °

Angle 2= 90= 90

angle 3= 10+67= 77 °

Mark wants to continue using whole liters of paint and thinks he can create a mixture of green paint the is 38 liters. Evaluate Mark's thinking using mathematical reasoning.

The ratio from blue to yellow paint is 2:3
I need helpppppp ASAP

Answers

Answer: It's not possible to create 38 liters of green paint with whole liters of blue and yellow paint.

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

Explanation:

The ratio of blue to yellow is 2:3. We have 2 parts blue and 3 parts yellow.

Multiply both parts by x to get 2x:3x

We have 2x parts of blue paint, and 3x parts of yellow paint.

x is some positive whole number.

In total, we have 2x+3x = 5x liters of paint. Set this equal to 38 and solve for x to get

5x = 38

x = 38/5

x = 7.6

We don't get a whole number, which contradicts how we set up x earlier. This must mean that Mark must use a fractional liters, instead of whole liters.

-------------------------

Here's another way to look at it:

Lets say he uses 2 liters of blue and 3 liters of yellow. This mixes to 2+3 = 5 liters of green.

Now let's say he uses 4 liters of blue and 6 of yellow. I multiplied both parts by 2. This mixes to 4+6 = 10 liters of green.

We continue this process to get the following

6 liters of blue + 9 liters of yellow = 15 liters of green8 liters of blue + 12 liters of yellow = 20 liters of green10 liters of blue + 15 liters of yellow = 25 liters of green12 liters of blue + 18 liters of yellow = 30 liters of green14 liters of blue + 21 liters of yellow = 35 liters of green16 liters of blue + 24 liters of yellow = 40 liters of green

As you can see, we don't land on 38 liters of green. We can get to 35 liters or 40 liters, but not 38. Each of the amounts of green are a multiple of 5.

This is confirmation that Mark will have to use some fractional amount of liters of blue and yellow paint.

I WILL GIVE YOU BRAINLY PLSS


Evaluate m( m + n) – n, use m = 5 and n = -3
A. 7
B. 13
C. 43
D. 37

PLSS SHOW YOUR WORK PLSS

Answers

Answer:

B. 13

Step-by-step explanation:

[tex]m(m + n) - n[/tex]

[tex]m = 5 \\ n = - 3[/tex]

Substitute m = 5 and n = - 3 in the expression.

[tex]5(5 + ( - 3)) - ( - 3) \\ 5(5 - 3) + 3 \\ 5(2) + 3 \\ 10 + 3 \\ 13[/tex]

Remind that negative multiply negative must equal positive.

The answer is 13 ! :) 5(5+(-3))-(3-)= X
Distribute 5
25+(-15)-(-3)
The minus (-3) turns into a positive so you get +3 and you add it all together and get 13 :)

A body falls from rest with an acceleration of 10m/s square. what is the velocity after 5s?How far has it fallen by them.​

Answers

Answer:

The velocity after 5s s is 20

HELPPPPPPPPPPPPPPPPPPPPPPPP

Which of the following expressions is a common factor when the expressions x2 – 9 and x2 – 5x + 6 are factored?

A.
x + 3

B.
x2

C.
x – 3

D.
x – 2

Answers

i believe the answer is C, x-3.

Tim’s age is nine more than his sister, Jill. Twice his age added to twice Jill’s age is 330.

Answers

Answer:

jill age is 78 and tim's age is 87

Step-by-step explanation:

let jill age be x then, tim's age is 9+x

by the question,

2(9+x) + 2x = 330

or,18 + 2x + 2x = 330

or,4x = 330-18

or, x = 312÷4

x = 78

9+x= 9+78=87

Which of the following is equivalent to 7^-2?

Answers

Answer:

C

Step-by-step explanation:

Answer:

C. [tex]\frac{1}{49}[/tex]

Step-by-step explanation:

When one puts a number to a negative exponent, such as;

[tex]a^{-b}[/tex]

One is essentially doing;

[tex]\frac{1}{a^{b}}[/tex]

Applying that knowledge;

[tex]7^{-2} \\= \frac{1}{7^{2}}\\= \frac{1}{49}[/tex]

HELP!!!! BRAINIEST ANSWER + POINTS!!! PLEASE BE SERIOUS (I NEED ALL 5 POINTS + EXPLANATION)

Answers

Answer:

slope=3

y-intercept=-1

Step-by-step explanation:

I PROMISE TO MARK BRAINLIESTTTTT

Answers

Answer:

D!

Step-by-step explanation:

In a class of 40 students, 26 are girls and 14 are boys. What is the ratio of girls to the total number of students?

Answers

Answer:

13:20

Step-by-step explanation:

no. of girls=26

total no. of students =40

ratio of girls to total no. of students=26:40

which means, the ratio is 13:20

A line passes through the points (8, 8) and (4, 0). What is its equation in slope-intercept form?

Answers

Answer: y=2(x)-8

Explanation: (8,8) 8-4 and 8-0
- (4,0)- 4 8
- you take the 8 as the numerator and 4 and the denominator and then divide 8 by 4 to=2 which is your slope
- you pick 1 set of points (I chose (8,8) to finish the problem)
8(y-intercept)= 2(slope) • 8(x-intercept) +b
8= 16+b
-16 -16 (subtract 16 from both sides)
-8 (8-16) =b {b=-8)
-now you put together your equation,
which leaves you with { y=2(x) - 8}
^ ^
your slope your B value

10. Keith has 7.8 ounces of tuna salad. If
he makes 3 sandwiches with an equal
amount of tuna on each, how much tuna
does he put on each one?

Answers

Answer:2.6 ounces per sandwich

Step-by-step explanation: 7.8/3= 2.6

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