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Illusion [34]
3 years ago
14

Me ayudan por favor ​

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
4 0

Answer:

Step-by-step explanation:

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A bag contains 150 marbles. Some are blue, and the rest are white. There are 21 blue marbles for every 4 white marbles. How many
Olin [163]

Given:

Total number of marbles in the bag = 150

There are 21 blue marbles for every 4 white marbles.

To find:

The number of blue marbles in the bag.

Solution:

Since, there are 21 blue marbles for every 4 white marbles, therefore the ratio of blue marble to white marbles is 21:4.

Let the number of blue marbles be 21x and white marbles be 4x.

Total number of marbles in the bag = 150

21x+4x=150

25x=150

Divide both sides by 25.

x=\dfrac{150}{25}

x=6

Now,

\text{Blue marbles}=21x

\text{Blue marbles}=21(6)

\text{Blue marbles}=126

Therefore, the number of blue marbles is 126.

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3 years ago
What is the diameter of a circle with a radius of 3.5 cm
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Solve: 16x2 - 80 = 0<br> Round the answer to the nearest hundredth.
GenaCL600 [577]

Answer:

-48

Step-by-step explanation:

16 x 2 = 32

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3 years ago
Find the percent change from the first value to the second.<br><br> 50; 39
sertanlavr [38]

Answer:

11 percent

Step-by-step explanation:

if you subtract 50 - 39 = 11

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