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3 years ago

15

a jar contains some marbles that are either white or red. the ratio of the number of white marbles to the number of red numbers

is 2 : 3. What might be the total of white and red marvle in the jar?

1 answer:

nexus9112 [7]3 years ago

5 0

Answer:

52 marbles i think

Step-by-step explanation:

You might be interested in

The ratio of boys to girls in Mrs. Ronilo's math class is 3 to 2. What percent of the class is boys? A) 33% B) 40% C) 60% D) 66%

nikdorinn [45]

Answer:

C) 60.

Step-by-step explanation:

Okay, I do math a little bit different than other kids... No worries though, its still correct.

First, find out how many times five can be put into a hundred. You should have gotten 20.

Now, we can use the twenty we got. Multiply 20 by the ratio of the boys. So 20 * 3 = 60.

Girls would be

20 * 2 = 40.

Those two numbers add up to a hundred so its all good. ^-^

Hope I helped!!

8 0

3 years ago

2. The quotient of a number and -9 increased by 10 is 11.

MrMuchimi

Answer:

Step-by-step explanation:

This question isn't worded the greatest, there are two ways you can read this.

1. The quotient of a number and -9, increased by 10, is 11

2. The quotient of a number, and -9 increased by 10, is 11

The first equation will look like this

$\frac{x}{-9} +10 = 11$

And the second will look like this

$\frac{x}{-9+10} = -11$

So I have solved for both (I personally believe the second way of reading the question is the correct way)

7 0

2 years ago

What is f(-5) if f(x) = |2x-1| + 10?

Alex777 [14]

Substitute x = -5
|2* -5 -1| + 10
|-10-1| + 10
21

8 0

3 years ago

A cylindrical swimming pool has a diameter of 20 feet and a height of 3.5 feet. How many gallons of water can the pool contain?

kvasek [131]

Answer:

The swimming pool will contain approx $8243\ gal$ of water.

Step-by-step explanation:

Given the swimming pool is in a cylindrical shape.

And the dimensions are $20\ feet$ diameter with a height of $3.5\ feet.$

Also, $1\ ft^3 =7.5\ gal$

First, we will find the volume of the swimming pool.

The swimming pool is in cylindrical shape.

So, the volume would be $\pi r^2h$

The height $(h)$ is given as $3.5\ feet.$ To calculate radius $(r)$ we will divide the diameter by two.

The radius of the cylinder would be $\frac{20}{2}=10\ feet$

Plug these values in the formula we get,

$\pi r^2h\\=\pi\times 10^2\times 3.5\\=3.14\times 100\times 3.5\\=1099\ ft^3$

Now, it is given $1\ ft^3 =7.5\ gal$

So, $1099\ ft^3 =1099\times 7.5\ gal=8242.5\ gal$

The swimming pool will contain approx $8243\ gal$ of water.

6 0

3 years ago

Shakila bought a purse for $120. the tax rate is 9%. what is the total amount Shakila paid?

olga nikolaevna [1]

Shakila paid $130.80 in total.
Explanation: 120*1.09=130.80

7 0

3 years ago