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2 years ago

What are the ratio of 1:6 and 3:8, 2:14and 3:42

Mathematics

1 answer:

GrogVix [38]2 years ago

3 0

The ratio of 1:6 is 1/6

The ratio of 3:8 is 3/8

The ratio of 2:14 is 1/7

The ratio of 3:42 is 1/14

Please mark brainliest if that helped!

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A jar contains 6 blue, 4 red, and 2 green marbles. What is the probability that three blue marbles are drawn with out replacemen

ch4aika [34]

Answer: The required probability is 9.09%.

Step-by-step explanation: Given that a jar contains 6 blue, 4 red, and 2 green marbles.

We are to find the probability that three blue marbles are drawn with out replacement.

Total number of marbles = 6 + 4 + 2 = 12.

After drawing one blue marble, we are left with total 11 marbles. And after drawing the second blue marble, we are left with total 10 marbles.

Therefore, the probability of drawing three blue marbles without replacement is given by

$p\\\\\\=\dfrac{^6C_1}{^{12}C_1}\times\dfrac{5C_1}{^{11}C_1}\times\dfrac{^4C_1}{^{10}C_1}\\\\\\=\dfrac{6}{12}\times\dfrac{5}{11}\times\dfrac{4}{10}\\\\\\=\dfrac{1}{11}\\\\\\=\dfrac{1}{11}\times100\%\\\\=9.09\%.$

Thus, the required probability is 9.09%.

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3 years ago

What is the surface area of a sphere with a diameter of 8 mm? Use 3.14 for π .

Rudik [331]

Answer:

Step-by-step explanation:

804.25mm

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2 years ago

If f(x) = 4x - 7, what's the value of f(2) ? * O -1 O 1 O 20 O 35

sp2606 [1]

Answer:

Step-by-step explanation:

f(x) = 4x - 7

What does f(x) mean? It means that whatever variable you have on the left which is (x), the same variable must be on the right.

So f(2) means that whatever variable is on the right, it must be replaced with 2 on the right. So .....

f(2) = 4(2) - 7

f(2) = 8 - 7

f(2) = 1

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2 years ago

What is the value of x in the equation 5x+ 3 = 4x? A.-3 B.- 1/3 C.1/3 D.3

Elina [12.6K]

Answer:

-3

Step-by-step explanation:

5•-3=-15

4•-3=-12

-15+3=-12

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1 year ago

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Answer:

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Step-by-step explanation:

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2 years ago