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marshall27 [118]
3 years ago
9

I've been having problems with this for a while...

Mathematics
1 answer:
Rina8888 [55]3 years ago
3 0
Like all problems that involve images within the question, we should definitely try to draw this out. In the picture above, I have done this.

Now, we can see that this is just a simple proportion problem. For every 2.5 cm of height of the flower, we are 2 cm from the opening, or aperture. For every 20 cm of height, how far are we? We can set up the problem like this:

20 ............2.5
-------- = ---------
...x ............. 2

where x is the unknown distance to the aperture from the flower. Now, we just need to get x by itself. A typical way of solving something like this is by doing "butterfly multiplication" which is really just a shortcut haha. Anyway, I can rewrite that equation ^ as:

20×2 = 2.5 × x

Then, to solve for x, we would divide both sides by 2.5. (If you don't know why that is, please let me know and I'll elaborate).

We would then have:

20×2
------- = x
2.5

Which then simplifies to:

x = 16

Try using the same logic for your second question, and if you get stuck, I'd be happy to help! please let me know if any of this doesn't make sense. :)

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What is the solution to the equation 1/4x+2=-5/8x-5<br> O X=-8<br> O x=-7<br> O X= 7<br> O X=8
Dovator [93]

Answer:

x = -8

Step-by-step explanation:

1/4x+2=-5/8x-5

Add 5/8 x to each side

1/4x + 5/8 x+2=-5/8x + 5/8x-5

1/4x + 5/8x +2 = -5

Subtract 2 from each side

1/4x + 5/8x +2-2 = -5-2

1/4x + 5/8x  = -7

Get a common denominator of 8

1/4 *2/2 x + 5/8x = -7

2/8x + 5/8x = -7

7/8x = -7

Multiply each side by 8/7

8/7 * 7/8x = -7*8/7

x = -8

5 0
3 years ago
The sum of the ages of my 3 children is 45 years.
Margaret [11]
I think A, but im not 100% sure
7 0
3 years ago
I really really need help
balu736 [363]

Answer:

i have no idea

Step-by-step explanation:

8 0
3 years ago
I need help with this problem <br> "Solve for x<br> 4x ≤ 12"<br> Please someone help me
nordsb [41]

x ≤ 3

Step-by-step explanation:

4x ≤ 12

divide each side by 4

x ≤ 3

7 0
3 years ago
Can someone help me with this and can someone tell me what operation it is
Contact [7]

Answer:

12.78

Step-by-step explanation:

63.65 divided by 5 = 12.7

3 0
3 years ago
Read 2 more answers
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