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3 years ago

If you like anime comment your favorite

Mathematics

1 answer:

miv72 [106K]3 years ago

7 0

Answer:

Step-by-step explanation:

my hero academia , banana fish and seven deadly sins

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Timmy knows that, in his school, 10 out of every 50 students wear glasses. There are 600 students in Timmy’s school. How many st

SCORPION-xisa [38]

Answer:

120

Step-by-step explanation:

10 out of 50 is 1/5 which is 20 percent and 20 percent of 600 is =120

5 0

3 years ago

Read 2 more answers

A box holds 8 red and 4 blue beads. Three beads are taken from the box and not replaced. Determine: The probability that all thr

zubka84 [21]

Answer: $\dfrac{14}{55}, \dfrac{13}{55}$

Step-by-step explanation:

Given

There are 8 red and 4 blue beads

Three beads were taken from the box

(i)No of ways of choosing three red beads out of 12 beads is $^8C_3$

Total no of ways $^{12}C_3$

Probability is

$P=\dfrac{^8C_3}{^{12}C_3}=\dfrac{8\times 7\times 6}{12\times 11\times 10}=\dfrac{2\times 7}{11\times 5}\\P=\dfrac{14}{55}$

(ii)atleast two beads refers to minimum two beads

There can be two possibilities (2B,1 R), (3B, 0R)

$\Rightarrow P=\dfrac{^4C_2\times ^8C_1}{^{12}C_3}+\dfrac{^4C_3}{^{12}C_3}\\\\\Rightarrow P=\dfrac{6\times 8}{220}+\dfrac{4}{220}=\dfrac{52}{220}\\\\\Rightarrow P=\dfrac{13}{55}$

6 0

3 years ago

Walter buys a bus pass for $30 every time he rides the bus money is deducted from the value of the pass he rode 12 times and $24

klemol [59]

So each time, 24/12 or $2 was deducted per trip

he has 30-24=$6 left

$6/$2=3, he has 3 trips left

I wonder what your question is

6 0

4 years ago

Find the volume of each figure. Round to the nearest tenth. Plz show work

Lena [83]

A For the first one and c for second one

5 0

3 years ago

Please help!

aleksklad [387]

Answer:

4 liters of 5% solution and 16 liters of 17.5% solution we need.

Step-by-step explanation:

Let us assume that x liters of 5% solution and y liters of 17.5% solution are taken.

So, x + y = 20 ........ (1)

As the final solution is of 15%, so we can write

$\frac{\frac{5x}{100}+ \frac{17.5y}{100}}{x + y} = \frac{15}{100}$

⇒ 5x + 17.5y = 300 ......... (2)

Now, solving equations (1) and (2) we get,

17.5y - 5y = 200

⇒ 12.5y = 200

⇒ y = 16 liters

Hence, x = 20 - y = 4 liters.

Therefore, 4 liters of 5% solution and 16 liters of 17.5% solution we need. (Answer)

4 0

4 years ago

Read 2 more answers