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Vlad [161]
3 years ago
10

Probably of Carl solving the 10 problems if there's 20 to study and he knows 15 and ten of the 20 are on the test.

Mathematics
1 answer:
Vladimir79 [104]3 years ago
8 0

Answer:

1/3

Step-by-step explanation:

Probability of solving ten problems by Carl

Given

Total number of problems = 20

Number of problems studied by Carl = 15

Number of problems out of the 20 set of problem coming in test is 10

Case I - All ten problems come from the set of known 15 question

10/15 * 10/20 = 1/3

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A water bill has increased by 25% to £52.50 work out the original cost?????
olga_2 [115]
100% - 25% = 75%

52.50 = 75% of what number?

52.50 = 0.75x

Let x = original cost

52.50 ÷ 0.75 = x

70 = x

The original cost was £70.
5 0
3 years ago
You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Which expression describes the percent of i
Inessa05 [86]




36 - 100%43 - x  %
we multiply by cross ->  36 * x = 100 / 43 
we should remove '100%' from new value, because we find only increase.. no new value in percent.
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6 0
4 years ago
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HELP ASAP Do Step By Step​
Romashka [77]
Number 3 is D) 0.06
Your dividing the cost by the loaf of bread.

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6 0
4 years ago
Will give brainliest
ehidna [41]

Answer:

25.047 or roughly 25.

Step-by-step explanation:

I solved it wrong the first time then i double check with wolframalpha and got the correct number.

We know that the area of the tile is 18 \sqrt{3} and it makes a triangle, we also know the base and height. In this case the base is 2\sqrt{3}^{x/12} and the height is also given which is \sqrt{3}^{\frac{x}{6} }.

Area of triangle = \frac{bh}{2},

substituting we will end up with  18 \sqrt{3}  =( 2\sqrt{3}^{x/12}  *  \sqrt{3}^{\frac{x}{6} }) / 2

Here is the tricky part \sqrt{x} = x^{\frac{1}{2} }, i totally forgot about that lol.

Simplifying: we will get  18 \sqrt{3} = 3^{\frac{x}{8} }

Now, in order to find the x, we will need to take the log of both sides.

log18\sqrt{3}  = \frac{x}{8} log3

Solving for x we end up getting:

8\frac{log18\sqrt{3} }{log3} = x

where x = 25.047.

To be honest I deserve a nobel prize not a brainliest lol.

Good question bro, take it easy.

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3 years ago
The lcm of 165xy and 77x^3y is
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The answer to the selected math eqaution is 11x
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