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Alexandra [31]
4 years ago
11

A jar contains 7 blue marbles, 12 red marbles, and 4 green marbles. What is the ratio of red marbles to the total number of marb

les in the jar?
Mathematics
2 answers:
Rudik [331]4 years ago
8 0

Add all the marbles to find the total number in the jar, which is 7+12+4, which is 23. There are 12 red marbles so the ratio is 12/23 or 12:23.
mariarad [96]4 years ago
7 0
<span>add all the numbers together and the divide by 12. </span>
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If you want to place an 8 ½ inch towel bar in the center of a door that is 25 ½ wide, how much space will be on each side of the
Marta_Voda [28]

Answer:

8 \frac{1}{2}in on each side

Step-by-step explanation:

If a door is 25\frac{1}{2} in wide and the towel bar is 8\frac{1}{2}in long, we can first subtract the length of the towel bar from the total width of the door to find out how many inches of space are remaining:

25\frac{1}{2} - 8\frac{1}{2} = 17

Since you want to center the towel bar on the door, you can divide the remaining space by two (2) to find how much space will be on each side:

17/2 = 8.5 inches on each side.

4 0
3 years ago
The ratio of the weight of an object on Jupiter to its weight on earth is 8 to 3. How much would a 100 punt person weigh on Jupi
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4 0
4 years ago
The local zoo is filling two water tanks for the elephant exhibit. One water tank contains 30 gal of water and is filled at a co
kakasveta [241]
You first have to set up the two equations. Y is equal to the total number of gallons in a tank and x is equal to the number of hours the tanks are filling.

Since the two equations both equal y I can make them equal each other. I then solved for x as you see and got -4.

Once I found my x value I now needed to find my y. You only needed to chose one equation to solve for y, so I decided to do the first one. I plugged in -4 where my x value currently was and solved for y. I got 2.


If you have any questions please comment!! Hope this helps!!
3 0
3 years ago
Answer for s or the total
ludmilkaskok [199]

Hey There!

Cross multiply on both sides, with this you will be cross multiplying in order to set the numbers up.

s * 2.4 = 2.4s

2.8 * 6 = 16.8

2.4s = 16.8

Divide s from both sides:

16.8/2.4

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5 0
4 years ago
Factor completely<br> (X^2 + x - 6) (2x^2 + 4x) =
Vikki [24]

Answer:

= 2x^4 + 6x^3 - 8x^2 + 24x

= 2x ( 2x^3 + 3x^2 - 4x + 12)

Step-by-step explanation:

(X^2 + x - 6) (2x^2 + 4x) =

Let's open the brackets carefully

x^2 * 2x^2 + x^2*4x + x*2x^2 + x*4x - 6*2x^2 - 24x

= 2x^4 + 4x^3 + 2x^3 + 4x^2 - 12x + 24x

= 2x^4 + 6x^3 - 8x^2 + 24x

= 2x ( 2x^3 + 3x^2 - 4x + 12)

8 0
3 years ago
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