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4 years ago

Plz Help Fast!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

xz_007 [3.2K]4 years ago

8 0

y-axis point- at positive 420

Down 3

Left 4

Slope is negative

f(x)= -3x/4+420

Put your first point at 6, then continue to go down 3 and left 4. and keep going until you have no room

Nat2105 [25]4 years ago

5 0

right

negative

hope this helps

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What does 23/2 reduce down to in its simplest form?

Lunna [17]

To simplify this improper fraction we can turn it into a mixed number. The fact that the denominator is 2 and the numerator isn't divisible by 2 shows that it can't simplified any further as a improper fraction.

23/2 = 11 1/2

Best of Luck!

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3 years ago

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allochka39001 [22]

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Ray Of Light [21]

Answer:

The mean of 25 students is 17.6

Step-by-step explanation:

The formula of the mean (average) is mean (average) = $\frac{S}{N}$ , where S is the sum of the data, and N is the number of the data

∵ The average marks of the first 10 students are 17

- That means the mean is 17 and the number of students is 10

∴ Average = 17

∴ N = 10

∵ Average = $\frac{S}{N}$

- Substitute average by 17 and N by 10

∴ 17 = $\frac{S}{10}$

- Multiply both sides by 10

∴ 170 = S

∴ The sum of the marks of the first 10 students is 170

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∴ Average = 18

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- Substitute average by 18 and N by 15

∴ 18 = $\frac{S}{15}$

- Multiply both sides by 15

∴ 270 = S

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Now to find the mean of 25 students and the two sums and divide the answer by 25

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3 years ago

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Answer:

$Probability = 0.504$

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Given

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Required

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Using the following probability formula, we have:

$P(Fake\ and\ Fake) = P(Fake) * P(Fake)$

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$P(Fake\ and\ Fake) = \frac{25}{35} * \frac{25-1}{35-1}$

The minus 1 (-1) represent the numbers of fake and total gems left after the first selection

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<em>Hence, the required probability is approximately 0.504</em>

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