In City Lake, researches caught, marked, and released 213 bass. Later, they took a sample of 104 bass and found that 13 were marked. Estimate the number of bass in the lake.

Answers

Answer 1

Answer:

The estimated number of bass in the lake is 1704 bass if the researchers caught, marked, and released 213 basses. Later, they took a sample of 104 basses and found that 13 were marked option third 1704 is correct.

What are population and sample?

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

We have:

In City Lake, researchers caught, marked, and released 213 basses. Later, they took a sample of 104 basses and found that 13 were marked.

Proportion = 104/13 = 8

This means 1 marked fish in every 8 fish

The number of basses in the lake = 8×213 = 1704 bass

Thus, the estimated number of bass in the lake is 1704 bass if the researchers caught, marked, and released 213 basses. Later, they took a sample of 104 basses and found that 13 were marked option third 1704 is correct.

Learn more about the population and sample here:

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Sharon is decreasing the size of a diagram of a leaf that is 30 centimeters long by 10 centimeters wide, if the reduced diagram is 4 centimeters wide how long will it be?

Answers

Answer:

12 cm

Step-by-step explanation:

This is a proportionality/similarity problem.

10 cm turned to 4 cm. So by how much has it decreased? In other words, 10 multiplied by WHAT is 4?

$10*x=4\nx=(4)/(10)\nx=0.4$

0.4 is also known as the scale factor from the large diagram to the small diagram.

So how much would 30 cm become? It would be 30 multiplied by the scale factor, which is 0.4.

$30*0.4=12$

Hence, the length of the reduced diagram would be 12 cm.

$x-length\n\nFrom\ proportion:\n\n(30)/(10)=(x)/(4)\n\n10x=120\ \ \ \ \ \ |:10\n\nx=12\n\nIt\ will\ be\ 12\ cm\ long$

A roadside vegetable stand sells pumpkins for$5 each and squashes for $3 each. One day they sold 6 more squash than pumpkins an their sales totaled $98 .write and solve a system if equations to find how many pumpkins and squash hey sold?

Answers

Let's take those 6 squashes. You get 98-6*3=80. Now you have an identical number of pumpkins and squashes. A pumpkin and a squash are sold, in total, for $8, so to get $80 you need 10 of each. You have 10 pumpkins and 10+6=16 squashes.

Answer:

=16 squashes.

What is the value of x?

x =

Answers

The formula we need is this one: $EC(EC+CD)=EB(EB+BA)$ . Filling in accordingly, we have x+4(x+4+1)=x+1(x+1+11). Simplifying that we get (x+4)(x+5)=(x+1)(x+12). We will FOIL both sides to get $x^2+9x+20=x^2+13x+12$ . Combining like terms gives us this simplification: 0=4x-8. If we factor out the common 4, we have 0 = 4(x-2). By the Zero Product Property, eitheer 4=0 or x-2=0. Well obviously, 4 does not equal zero, so x-2 = 0, and x = 2.

Amy wants to buy a digital camera that sells for $199.99 if he uses his discount car he will save 18% . About how much will he save using the discount card?

Answers

Answer:

36.00

Step-by-step explanation:

199.99 - 18%( 36.00)= 163.99

Simplify (3x)–1

A. 81x^4
B. 1/3x
C. 1/x^6
D. 4x^6

Answers

A 243x^5-1
B x^2-1
C −x5+3x5
D 12x^7-1

your a teacher pick whitch on is right abram 50 nadeen 18 which is right Explain what the student did wrong who has the incorrect answer 8+2•(6-1)

Answers

*Answer* : 50

*Explanation* :

8+2•(6-1)
10•(6-1)
10•6 10•-1
60 -10 = 50
I hope this helps :))

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