Ask question

Ask question

All categories

3 years ago

15

7. The government of Mexico declared blue sharks an endangered species. They put tags on 36 blue sharks and released them. Later

, they corral 130 blue sharks; among those blue sharks, 20 were tagged. Find the best estimate for the blue shark population?

2 answers:

fenix001 [56]3 years ago

8 0

The correct answer is 234

Ivanshal [37]3 years ago

5 0

Answer:

hi everyone is happy with her husband and her

You might be interested in

Point D(-3.5) is a vertex of triangle DEF.After a rotation of the triangle about the origin, D' is located at (3,-5).Which of th

Nimfa-mama [501]

<h3>Answer: 180 degrees</h3>

note: it doesn't matter if its clockwise or counterclockwise when it comes to 180 degree rotations.

========================================

Explanation:

The rule for 180 degree rotations is

(x,y) ---> (-x, -y)

So the x and y coordinates flip in sign from positive to negative, or vice versa.

Point D ' (-3, 5) rotates to D ' (3, -5) following this rule

-----------------

A further detailed break down might look like this

x = -3 becomes -x = -(-3) = 3

y = 5 becomes -y = -5

(-3, 5) ----> (3, -5)

6 0

3 years ago

Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work together, it takes them 2 hours. How

aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood = K hrs

So, the per hour rate of Dwight = $(\frac{1}{K})$

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood = (K- 3) hrs

So, the per hour rate of Joe = $(\frac{1}{K-3})$

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them = $(\frac{1}{2})$

⇒ Per hour rate of ( Dwight + Joe) = $(\frac{1}{2} )$

$\implies (\frac{1}{K}) + (\frac{1}{K-3}) = (\frac{1}{2})$

Now, solving for the value of K , we get:

$(\frac{1}{K}) + (\frac{1}{K-3}) = (\frac{1}{2})\\\implies \frac{(K-3) + K}{K (K-3)} = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K + 6= 0\\\implies K^2 - 6K - K + 6= 0\\\implies K(K-6) -1(K - 6)= 0\\\implies (K-6)(K-1) = 0$

Implies either K = 6 Or K = 1

But if K = 1, (K-3) = 1- 3 = -2 hours would be A CONTRADICTION.

⇒ K = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0

3 years ago

Point A is located at (1,5), and point M is located at (-1, 6). If point M is the midpoint of AB, find the

Step2247 [10]

Answer:

-3, 7

Step-by-step explanation:

because you take how much from the first coordinate to the second and add it too the second

7 0

3 years ago

Please awnser in link below

xenn [34]

Answer:

You will get 13 groups.

Step-by-step explanation:

324 / 24 = 13.5 So there are 13 groups with 5 left over. Hope this helps.

8 0

3 years ago

Read 2 more answers

Two dice are tossed. Find the probability of getting the sum of the dice equal to 28.

dimulka [17.4K]

Answer:

Isn't the sum when you add numbers together? if this is true, there is no way you can get the sum of 28

Step-by-step explanation:

3 0

3 years ago