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AnnZ [28]
3 years ago
9

A student and a professor each choose a number between 1 and 9 (1 and 9 are both possible choices). what is the probability that

the two choose the same number?
Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0
I think the answer is 3/9
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What is the slope of the line passing through (1, 2) and (3, 8)?
Alexeev081 [22]
Slope = Change in y / Change in x

= 8 - 2 / 3 - 1

= 6 / 2

= 3
3 0
3 years ago
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∠3 and ∠6 can be classified as:
anastassius [24]

Answer:

Alternate Interior Angles

Step-by-step explanation:

Since they are inside the parallel lines, Alternate Exterior Angles and any other similar theorems can be ruled out.

Since they are on opposite sides of each other, Corresponding Angles and any other similar theorems can be ruled out.

Since they are far apart from each other, Supplementary Angles, Adjacent Angles, Vertical Angles, and any other similar definitions can be ruled out.

Therefore, we are left with Alternate Interior Angles.

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3 years ago
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A set of magical wand prices are normally distributed with a mean of 50 dollars and a standard deviation of 4 dollars. A blackth
Anna11 [10]

Complete Question

A set of magical wand prices are normally distributed with a mean of 50 dollars and a standard deviation of 4 dollars. A blackthorn wand has a price of 45.20. What proportion of wand prices are lower than the price of the blackthorn wand? You may round your answer to four decimal places

Answer:

0.1151

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score = $45.20

μ is the population mean = $50

σ is the population standard deviation = $4

We are solving for x < 45.20

Hence:

z = 45.20 - 50/4

z = -1.2

Probability value from Z-Table:

P(x<45.20) = 0.11507

Approximately to 4 decimal places = 0.1151

Therefore, the proportion of wand prices that are lower than the price of the blackthorn wand is 0.1151

8 0
2 years ago
frank rented a truck for one day. There was a base fee of 14.95, and there was an additional charge of 78 cents for each mile dr
Gemiola [76]
Answer : 153 miles

Explanation : first take 134.29 & subtract the 14.95 base fee which give you 119.34 . now divide 119.34 by 78 which gives you 1.53. so he drove 153 miles.
equation : 14.95+ 0.78x = 134.29 . to double check just multiply 153 x 0.78 and add $14.95 which gives us the total of $134.29
7 0
2 years ago
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Which of the following represents the solution to 3x^2+35=7x^2-4x<br> need help ASAP
mina [271]

Answer:

F

Step-by-step explanation:

4x^2 - 4x - 35 = 0

factor

(2x + 5)(2x - 7) = 0

x = -5/2, x = 7/2

that's F

4 0
3 years ago
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