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VLD [36.1K]
3 years ago
9

If a number is increased by 20% then the number is 24 find the number

Mathematics
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

20

Step-by-step explanation:

  • x+20%=24
  • x+x*20/100=24
  • x+0.2x=24
  • 1.2x=24
  • x=24/1.2
  • x=20
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Find center,foci, and vertices of ellipse (x+3)^2/21+(y-5)^2/25=1
sasho [114]
I don't know if we can find the foci of this ellipse, but we can find the centre and the vertices. First of all, let us state the standard equation of an ellipse. 

(If there is a way to solve for the foci of this ellipse, please let me know! I am learning this stuff currently.) 

\frac{(x-x_{1})^2}{a^2}+ \frac{(y-y_{1})^2}{b^2}=1

Where (x_{1},y_{1}) is the centre of the ellipse. Just by looking at your equation right away, we can tell that the centre of the ellipse is: 

(-3,5)

Now to find the vertices, we must first remember that the vertices of an ellipse are on the major axis. 

The major axis in this case is that of the y-axis. In other words, 

b^2>a^2 

So we know that b=5 from your equation given. The vertices are 5 away from the centre, so we find that the vertices of your ellipse are: 

(-3,10)
 & (-3,0)

I really hope this helped you! (Partially because I spent a lot of time on this lol) 

Sincerely,

~Cam943, Junior Moderator
6 0
3 years ago
Given that y is directly proportional to x. If y = 30 and x= 5, write an equation that connects y with x.
Licemer1 [7]

Given:

y is directly proportional to x.

y=30 when x=5

To find:

The equation that connects y with x.

Solution:

It is given that, y is directly proportional to x. So,

y\propto x

y=kx                     ...(i)

Where, k is the constant of proportionality.

We have, y=30 when x=5. Substituting these values in (i), we get

30=k(5)

Divide both sides by 5.

\dfrac{30}{5}=k

6=k

Substituting k=6 in (i), we get

y=6x  

Therefore, the required equation is y=6x.

8 0
2 years ago
The left and right page numbers of an open book are two consecutive integers whose sum is 335 find these page numbers.
almond37 [142]

Answer:

167 and 168

you divide 335 by 2, you get 167.5

so it's gonna be either 166 and 167 or 167 and 168

then you add up 166 and 167, you get 333 (so this is not the answer)

it means the answer is <u>1</u><u>6</u><u>7</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>1</u><u>6</u><u>8</u> (167+168=335)

hope it helped, sorry for my bad english

if something is not clear, write a comment I'll answer

3 0
2 years ago
If 2(x + 2) + 4(x - 1) = 8, then 3x =
lubasha [3.4K]

Answer:

3x=4

Step-by-step explanation:

3 0
3 years ago
Which of the following is the solution set of 6x + 5 = -29?<br> O {-4}<br> O {-17/3)<br> O (17/3)
Deffense [45]

Answer:

-\frac{17}{3}

Step-by-step explanation:

7 0
1 year ago
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