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eimsori [14]
3 years ago
14

-8/9 divided by -8/9 in fraction form

Mathematics
2 answers:
AVprozaik [17]3 years ago
8 0

Answer:

1

Step-by-step explanation:

If you ever divide a number by itself, it will be 1.

irina [24]3 years ago
6 0

Answer:

I believe its 1

Step-by-step explanation:

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How do i solve these using substitution
Vlad [161]

Answer:

Step-by-step explanation:

point form:

(3,4)

equation form:

x= 3,  y= 4

7 0
3 years ago
Graph each equation.<br><br> y=-2x-1 <br><br> help please
yan [13]
You can graph that by looking at the y-intercept first. That's where you start to put a point in the coordinate plane or graph.

So go down 1 below 0.

Next, look at the slope.
We know that y = -2x - 1 is in slope intercept form (y = mx+b)
So -2 is our slope. It will be -2/1 because we need a fraction to graph the rise over run and all whole numbers can be a fraction by making 1 as their denominator.

Look at the attachment. 

Starting from -1 (y-intercept), go down 2 (-2) then right 1 (1).
To complete the line above, keep the same value and reverse their sign/symbol. So -2/1 will be 2/-1. It goes up 2 then left 1.

I hope you understand and find this answer the most helpful! :)

8 0
4 years ago
A ball is thrown upward with an initial velocity of 40 feet per second from ground level. The height of the ball, in feet, after
Elena L [17]

It takes 1.875 seconds for the ball and the balloon to reach the same height

Step-by-step explanation:

A ball is thrown upward with an initial velocity of 40 feet per second from ground level

  • The height of the ball, in feet, after t seconds is given by h= -16 t² + 40 t

At the same time, a balloon is rising at a constant rate of 10 feet per second

  • Its height, in feet, after t seconds is given by h = 10 t

We need to find the time it takes for the ball and the balloon to reach the same height

∵ The height of the ball is given by h = -16 t² + 40 t

∵ The height of the balloon is given by h = 10 t

∵ They start at the same time t

∵ They have the same height h

Equate the two equations of h to find t

∴ -16 t² + 40 t = 10 t

- Subtract 10 t from both sides

∴ -16 t² + 30 t = 0

- Take -2 t as a common factor

∴ -2 t(8 t - 15) = 0

Equate -2 t by 0 and 8t - 15 by 0

∵ -2 t = 0 ⇒ divide both sides by -2

∴ t = 0 ⇒ initial time

∵ 8 t - 15 = 0 ⇒ add 15 to both sides

∴ 8 t = 15 ⇒ divide both sides by 8

∴ t = 1.875 seconds

It takes 1.875 seconds for the ball and the balloon to reach the same height

Learn more:

You can learn more about the equations in brainly.com/question/2977815

#LearnwithBrainly

6 0
3 years ago
10 divide 6.0 please
Nostrana [21]

Answer:

1.6667

Step-by-step explanation:

It took awhile to get this

6 0
3 years ago
Find the surface area of the composite solid.
Kaylis [27]

Hey there!

To find the surface area of this solid, we will want to find the surface area of the two 3d shapes we are given and then add them.

<u />

<u>SQUARE PRISM</u>

For the square prism, we want to find the area of the front, back, two sides, top, and bottom.

FRONT AND BACK

As we can see, one side length for the front and back is 5. The one that goes upward is 4. If we multiply the two, we get twenty. Therefore, the front and back are each twenty square feet.

20+20= 40

SIDES

Now, we want to find the two sides. These have the same dimensions as the front and back: a 5 and a four. This is two twenties once again.

20+20=40

TOP AND BOTTOM

Now, we want to find the top and bottom. Our two lengths on the bottom are 5 and 5, so this area will be 25 on the bottom and 25 on the top. However, in our final solid, you cannot see the top part of the cube because it is covered up by the square pyramid, therefore, we will just use one of our 25s.

25

Now, let's add up these areas to see the surface area of the square prism.

25+40+40= 105 square feet.

<u>SQUARE PYRAMID</u>

To find the surface area of our square pyramid, we want to find the area of the four triangles and then add them up. We will not count the actual base because it's not part of the surface of the solid, so it is not part of the surface area.

TRIANGLE FACES

The formula for a triangle is 1/2 multiplied by the base times the height. We have four congruent triangles so we can multiply this result by four.

Our base is 5, our height is six, we multiply both by 1/2 and four, and we will then get our answer.

4*1/2*5*6= 60

Therefore, the surface area of our square pyramid is 60 square inches.

<u>COMPOSITE SOLID</u>

Now, we simply add up the two surface areas we gathered.

Square Prism: 105 square feet

Square Pyramid: 60 feet

105+60=165

Therefore, the surface area is 165 square feet.

I hope that this helps! Have a wonderful day!

6 0
3 years ago
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