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wariber [46]
3 years ago
11

Mrs. Ameldo's class has 5 students with blue eyes, 7 with brown eyes, 4 with hazel eyes, and 4 with green eyes. Two students are

selected at random. Find the probability of selecting a student with hazel eyes and then a student with blue eyes. Select one answer.
1/19

5/19

1/5
Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer:

5/19

Step-by-step explanation:

There's no explanation, it's just common sense ‍♀️

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Is apples cost $3.50 per pound how much would one and 1/2 pounds cost
Shalnov [3]

$ 3.50 per lb * 1 1/2 lbs

3.50 per lb * 1.5 lbs = 5.25

It will cost $5.25

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3 years ago
Explain proportionality to me 7th grade math ​
kari74 [83]

If two quantities <em>a</em> and <em>b</em> are directly proportional to one another, then both <em>a</em> and <em>b</em> change in the <u>same direction</u>.

For example, if the amount/volume of coffee I have in a cup is directly proportional to the total volume of the cup, then the larger the cup gets, the more coffee I can fill it with. On the other hand, if the cup gets smaller, the amount of coffee it can hold also gets smaller.

Both <em>a</em> and <em>b</em> don't necessarily change at the same rate, though, which means one of these needs to get appropriately scaled by some factor <em>k</em>, so that

<em>a</em> = <em>kb</em>

Continuing the coffee example: Suppose I only fill my cup halfway. If the total volume of the cup is <em>a</em>, then the amount of coffee I pour in is <em>b</em> = 1/2 <em>a</em>. So the relationship of these two quantities is governed by the equation,

<em>a</em> = 2<em>b</em>

and in this case, <em>k</em> = 2.

If instead <em>a</em> and <em>b</em> are inversely proportional, this means as one quantity changes, the other changes in the <u>opposite direction</u>.

Suppose I have two cups that I use for coffee that can both hold the same amount <em>k</em> if they are filled completely, but one cup is taller than the other. In order for both cups to be able to hold the same volume of coffee, the taller cup must have a thinner profile.

The cups are cylindrical, so that their volumes are equal to the products of the area of their base <em>a</em> and their height <em>b</em>. If one cup is twice as tall as the other, then for the smaller cup we could have

<em>ab</em> = <em>k</em>

and for the taller one,

<em>a</em> (2<em>b</em>) = <em>k</em>

But in order to get the same volume, the quantity <em>a</em> for the shorter cup must be cut in half to preserve equality:

(1/2 <em>a</em>) (2<em>b</em>) = <em>ab</em> = <em>k</em>

So one quantity is doubled (increases), while the other gets halved (decreases).

5 0
3 years ago
Q.The length of the minute hand of a clock is 11cm. What is the distance covered by the minute hand in 1 hour ? *
Lady_Fox [76]

Answer:

\huge\mathcal\pink{Answer(   \times )} \\  \\ \huge\mathcal\green{- 69.1 \:  cm  \:  ✓✓} \\  \\ \huge\mathfrak\purple{Hope \:  it  \: helps ...}

3 0
2 years ago
3,080 feet = ____ miles. Answer as a proper fraction or as a whole or mixed number
Mandarinka [93]
Answer: 3080/5280 or (simplified) 7/12

Explanation:
There are 5280 feet in one mile so 3080/5280 is equal to 3080 ft/ 1 mile.

7/12 is equal to 3080/5280 when simplified.
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Question 7 of 10
Degger [83]
The answer is C I solved it with my teacher
4 0
3 years ago
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