Fill in the blank.if necessary, use the slash marks (/) for a function bar. if sin theta= 3/5, then cos theta=

Answers

Answer 1
Answer:

Answer:

4/5 or -4/5

Step-by-step explanation:

We are going to use the Pythagorean Identity:

\sin^2(\theta)+\cos^2(\theta)=1

We are given the value of \sin(\theta) which is 3/5 so plug that in:

((3)/(5))^2+\cos^2(\theta)=1

Simplify:

(9)/(25)+\cos^2(theta)=1

Subtract 9/25 on both sides:

\cos^2(\theta)=1-(9)/(25)

\cos^2(\theta)=(16)/(25)

Take the square root of both sides:

\cos(\theta)=\pm \sqrt{(16)/(25)}

\cos(\theta)=\pm (4)/(5)


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What is the area of the moon?

Answers


The moon is roughly a sphere, with an average radius of 1,738 kilometers.

The area of a sphere is      4 pi R² .

Area of the moon  =  (4 pi) (1,738 km)² =

                                 (12.566) (3,020,644 km²)  =  3.796 x 10⁷ km²

Z-y+xz use x =2, y = -1, z = -3

Answers

Simple...

z-y+xz

x=2

y=-1

z=-3

Plug it in!

-3-(-1)+(2)(-3)

-3+1-6

-2-6

-8

Thus, your answer, -8.


z - y + x * z = ?
-3 - -1 + 2 * -3 =
-2 + -6 = -8

This stainless-steel fittingmeasures 3.9 cm long. It
has an inner diameter of
2.7 cm and an outer
diameter of 3.6 cm. If the
density of stainless-steel
is 8 g/cm3, what is the
mass of the fitting?

Answers

Subtract the volume of the inside diameter from the volume of the outside diameter and then multiply that by the density.

Volume of outside:

PI x 1.8^2 x 3.9 = 39.67704 cubic cm

Volume of inside:

PI x 1.35^2 x 3.9 = 22.318335 cubic cm

Difference: 39.67704 - 22.318335 = 17.358705 cubic cm.

Mass = 17.358705 x 8 = 138.86964 grams. Round the answer as needed.

A Website sells MP3 downloads of music for $10 and Blu-ray discs of movies for $30. Fiona wants to buy some albums and some movies. She plans to spend a total of $150. Write and graph an equation to represent the situation.How do i work this out?

Answers

Answer:

Let x be the number of albums to be  bought and

let y be the number of movies  to be bought.

The amount to be spent on albums is 10x and

The amount to be spent on movies is 30y.

As per the given condition: The total amout to be spent must equal $ 150.

then, we have

10x+30y = 150              ......[1]

Now, find x-intercepts and y-intercepts of equation [1];

x-intercepts defined as the graph crosses the x-axis.

Substitute y= 0 in [1] to solve for x;

10x+30(0)=150

10x =150

Divide both sides by 10 we get;

(10x)/(10)=(150)/(10)

Simplify:

x = 15

y-intercepts defined as the graph crosses the y-axis.

Substitute value of x=0 in [1] to solve for y;

10(0)+30y = 150

30y =150

Divide both sides by 30 we get;

y =5

Now, plot these points (0, 5) and (15, 0) on graph and  connect them with a line as shown in the figure below;


Answer:

x + 3y = 15

The graph is attached below.

Step-by-step explanation:

Given the price of album = $10.

and the price of movies = $30.

Let's assume she buys "X" albums and "Y" movies.

Cost would be (10X + 30Y).

She plans to spend a total of $150, so cost would be same as total expenditure.

10X + 30Y = 150

X + 3Y = 15

we can graph this equation of line on a graph paper as given below:-

if five potatoes together have a mass of one kilogram and eight pears together have a mass of 1200 grams,which has the greater mass a potato or a pear?explain

Answers

Solutions 

We know that five potatoes together have a mass of one kilogram and eight pears together have a mass of 1200 grams. 

potatoes = one kilogram 

eight pears = 1200 grams 

To solve the problem we have to convert 1 kilogram into grams. 

kilogram  = 1000 grams 

Now we have 

5 potatoes = 1000 grams 

eight pears = 1200 grams  

The next step is to use division:

1000 ÷ 5 = 200 -> 1 potato weighs 200 grams.

1200 ÷ 8 = 150 -> 1 pear weighs 150 grams

Therefore a potato has a greater mass than a pear. 

1kg = 1000 grams
Use division:

1000 / 5 = 200 -> 1 potato weighs 200 grams.

1200 / 8 = 150 -> 1 pear weighs 150 grams

Thus a potato has a greater mass than a pear. 

I need help finding the area of this shape. The shape is in the picture.

Answers

the area of this shape is:
1/2x7mx(6m+8.2m)=1/2x7mx14.2
                               =7mx7.1m
                               =49.7m

the answer of this area of this shape is 49.7m
its a magical trapezoid