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Sholpan [36]
2 years ago
6

Sorry but it's a rly bad picture I rly need this I'm so confused

Mathematics
1 answer:
son4ous [18]2 years ago
5 0
2x+1=9
Your going to always try to leave the x variable alone.
2x+1=9
    -1  -1
2x=8
/2  /2
x=4
You might be interested in
F(x) → 4x - 7. Find f(9)
Dvinal [7]

Answer:

29

Step-by-step explanation:

f(x) = 4x -7

f(9) = 4(9)-7

=36-7

=29

4 0
3 years ago
In a fruit cocktail, for every 20 ml of orange juice you need 45 ml of apple juice and 100 ml of coconut milk. What is the ratio
Anni [7]

the ratio of apple juice to coconut milk to orange juice is:

45:100:20 = 9:20:4

4 0
2 years ago
Statements that are true for a cylinder with radius r and height h.
vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling <em>r</em> quadruples the volume.

Doubling <em>h</em> doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

\displaystyle V=\pi r^2h

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2<em>r</em>. Hence, our volume is:

\displaystyle V=\pi (2r)^2h=4\pi r^2h

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2<em>h</em>. Hence, our volume is:

V=\pi r^2(2h)=2\pi r^2h

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2<em>r</em> and doubling the height results in 2<em>h</em>. Hence, the new volume is:

V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0
3 years ago
Can 40:70 be simplified?
Veseljchak [2.6K]
No they are not equivalent and if you are trying to get a mixed number try dividing
8 0
3 years ago
Can any one help me with this problem ​
AnnyKZ [126]
A - 2
B - 4
C - 3
D - 1
3 0
3 years ago
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