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AnnZ [28]
2 years ago
5

3.Lou has the first 4 encyclopedias lined up on a shelf, A, B, C, and D. If he picks two at random, what is the probability that

he picks A first and B second?
Mathematics
1 answer:
Oksana_A [137]2 years ago
8 0
Because they are first.
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For a given set of rectangles, the length is inversely proportional to the width. In one of these rectangles, the length is 12 a
RSB [31]

Answer:

The width is 8 units

Step-by-step explanation:

This is a variation problem we are to work with.

Length is inversely proportional to width, let length be l and width be w

modeling the statement mathematically, we have lw = k where k is the proportionality constant

Now let’s get k from l = 12 and w = 6

k = 12 * 6 = 72

Now for the second rectangle also;

lw = k given l = 9

9w = 72

w = 72/9

w = 8

3 0
3 years ago
At Edwards Middle School there are 8 teachers for every 136 students. There are 850 students enrolled at the school. How many te
In-s [12.5K]

Answer:

50

Step-by-step explanation:

one teacher per 17 students

7 0
3 years ago
Read 2 more answers
A farmer is designing a field for his new horse. In order for the field to fit into his farm, the angle θ must be less than 40◦,
vovangra [49]

Answer:

The field will not fit

Step-by-step explanation:

To find the angle, we will use cosine rule;

c² = (a² + b² - 2abcosC)

C in this case is θ

Thus;

15² = (8² + 20² - 2(8 × 20)cos θ)

225 = (64 + 400 - 320cos θ)

464 - 225 = 320cos θ

cos θ = 239/320

θ = cos^(-1) 0.7469

θ = 41.68°

Thus angle is not less than 40° as recommended. Thus, the field will not fit.

5 0
3 years ago
~.❤~Please Answer~❤.~
lord [1]

Answer:

a,b

Step-by-step explanation:

5 0
2 years ago
Which ones arent parrellograms?
MAVERICK [17]

Answer:

Hi, There! I'm Here to help :)

<em>I would Say the 1st Section On the Right Meaning the 1st Block on the right.</em>

<em />

Step-by-step explanation:

A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal)

.Few examples of a parallelogram are rhombus, rectangle, and square.

6 0
2 years ago
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