Anyone please help me pls on how to solve this i really need help

A sample of fish is taken from two different lakes.
Seventy fish are taken from Lake A and the mean length of the
fish is 35 cm.
Thirty fish are taken from Lake B and the mean length of the
fish is 42 cm.
Calculate the mean length of the 100 fish.

Answers

Answer 1

Answer:

So, 100 fish taken from Lake A would have a mean length of 50 cm and 100 fish taken from Lake B would have a mean length of 140 cm

Step-by-step explanation:

1 fish from Lake A would be 0.5 cm long you calculate that by dividing 70 from 35 and you calculate the fish from Lake B by dividing 30 from 42 which would be 1.4 cm, (english is not my first language so I hope you understood everything :D)

Related Questions

giving brainliest!! easy*

Answers

Answer:

4521.6

Step-by-step explanation:

pi*r^2*h = pi*144*10 = 1440 pi which is roughly 4521.6

Answer:

979.68

Step-by-step explanation:

Solve the following inequality: 10 - 2x ≥ 12.

Answers

Answer:

x<(with a line underneath)-1

Step-by-step explanation:

10-2x>(with a line underneath)12

-10 -10

-2x>(with a line underneath)2

/-2 /-2

x<(with a line underneath)-1

a bakery place the following price for bagels one bagel for $1.50 two bagels for$2.25 a half a dozen for
$6.50 a dozen for $12 is the price per bagel proportion 2 the number of bagels brought.

Answers

Answer:

Step-by-step explanation:

1 bagel $1.50 ---------> unit cost: $1.50/bagel

2 bagels $2.25

6 bagels $6.50

12 bagels $12 ---------> unit cost: $1/bagel

Since the unit costs are not equal, the prices are not proportional.

Write an expression that represents the height of a tree that begins at 5 feet and increases by 4 feet
per year. Let y represent the number of years.

Answers

4y+5. Btw it’s a linear equation, the y intercept is 5 and the slope is 4

x and y are supplementary angles. y measures 97 What is the measure of x?

Answers

Answer:

Step-by-step explanation:

supplementary angles have sum of 180

Answer: 83

Supplementary angle =180 degree

180-97=83

72,-36,18,-9 find the common ratio

Answers

I’m not sure about the answer but there is app called Socratic can help you out

Aria recorded her daily lemonade stand profit during one week. Which data representation would you use to show her profit over the week? Explain how you would draw it and what you would expect to see

Answers

Answer:

Step-by-step explanation:

a line graph would show the data over time.I would plot the days along the horizontal axis and each daily profit at points on the vertical axis.I would connect the points with lines.If her profit increasing each day, I would expect the line height to increase over time.

Answer:

There is already another answer:

line graph or bar graph because it shows you what day of the week you sell more lemonade.

Step-by-step explanation:

Find the area of the trapezoid 10ft, 7.5ft, and 13.5ft

Answers

If I use 7.5 and 13.5 as the bases and 10 as the height, the area is 105

EXPLANATION:
1/2h x sum of bases
1/2(10) x (7.5 + 13.5)
5 x 21
105

ANSWER:
105

How many times bigger is 3 to the power of 15 compared to 3 to the power of 12?Explain your answer.

Answers

Answer: 3 to the power of 15 is 27 times bigger compared to 3 to the power of 12

Explanation:
3 to the power of 15 = 14348907
3 to the power of 12 = 531441

14348907 divided by 531441 = 27

Convert 5/3 into a ratio

Answers

Answer:

5:3

Step-by-step explanation:

step one: reduce the fraction

(since 5/3 is a reduced as it can get we can 'skip' this step)

step two: rewrite as a ratio

5/3

=5 : 3

good luck :)

i hope this helps

brainliest would be highly appreciated

have a nice day!

The conversion rate for 135 Mexican pesos is 7 1/2 American dollars enter the amount of pesos you would get with 50 American dollars

Answers

Answer:

900

Step-by-step explanation:

135/7.5= x/50

cross multiply

7.5x=6750

x=900

$50/$7.50=6.667
6.667x135=900 Mexican pesos

The following data points represent the number of
patients that were seen by each doctor at Brodin Medical
Center last week.
Sort the data from least to greatest.
4 9
17 7 12
11
5
Find the median number of patients.

Answers

Answer: 9

Step-by-step explanation: 9 Will Be The Median Number Of Patients.

5.
Convert each of the following fractions to a decimal using long division.
13
32
A.
B.
0
8

Answers

wait i don’t understand how they are fractions. lmk

The functions f and g are defined as follows.
g(x) = -2x3-5
f(x) = - 4x + 2
Find f (6) and g(-3)
Simplify your answers as much as possible.

Answers

Answer:

f(6) = -22, and g(-3) = 49

Step-by-step explanation:

f(x) = -4x + 2

f(6) = -4(6) + 2

f(6) = -24 + 2

f(6) = -22

I assume the 3 in g(x) = -2x3 -5 is cubed

g(-3) = -2(-3)^3 - 5

g(-3) = -2(-27) - 5

g(-3) = 54 - 5

g(-3) = 49

[tex](2/3)^{3}[/tex]

Answers

Answer:

[tex]\frac{8}{27}[/tex]

Step-by-step explanation:

[tex](\frac{2}{3} )^3 = \frac{2^3}{3^3} = \frac{2 \times 2 \times 2}{3 \times 3 \times 3} = \frac{8}{27}[/tex]

h (t) = 2t - 2 g(t) = 4t + 5 Find (h(g(t))

Answers

Answer:

[tex]h(g(t))=8t+8[/tex]

Step-by-step explanation:

We are given the two functions:

[tex]h(t)=2t-2\text{ and } g(t)=4t+5[/tex]

And we want to find:

[tex]h(g(t))[/tex]

So, by substitution, we acquire:

[tex]h(g(t))=2(4t+5)-2[/tex]

Distribute:

[tex]h(g(t))=8t+10-2[/tex]

Simplify:

[tex]h(g(t))=8t+8[/tex]

Yvonne wants to cover the back of her smartphone with a decorative pattern. If the phone's length is 1/2 foot and width is 1/6 foot, what is the area that the decorative pattern will cover?

Answers

Answer:

1/12 square foot

Step-by-step explanation:

Area of the pattern = LEngth * Width

Given the following

Length = 1/2 foot

Width = 1/6 foot

Area of the pattern = 1/2 * 1/6

Area of the pattern =1/12 square foot

Hence the area that the decorative pattern will cover will be 1/12 square foot

(7x-11)+(6x-5)+(3x+6)+(4x+7)=

Answers

the answer is 20x - 3

have a wonderful day! :)

A penny is dropped from the observation deck at the top of The Willis Tower in Chicago, IL. The height of the penny at any time is given by the equation H = 1450 – 16t2, where H is the height of the penny in feet and t is the time measured in seconds. How long will it take for the penny to hit the ground? Round your answer to the hundredths place.

Answers

Answer:B

Step-by-step explanation:because you need to add

Write an exponential function =for a graph that passes through (2,1) and (3,10). Ill give you whatever please help

Answers

Answer:

[tex]y = \frac{1}{100} \times 10{}^{x} [/tex]

Step-by-step explanation:

Use coordinates (2,1) and 3,10

The exponential equation is

[tex]y = a \times b {}^{x} [/tex]

Plug in the x and y values.xfor both functions of coordinates.

[tex]1 = a \times b {}^{2} [/tex]

[tex]10 = a \times b {}^{3} [/tex]

Divide the equation with the larger exponet by the other equation.

[tex]10 = b[/tex]

Substitute that in for one of the equations.

[tex]10 = a \times 10 {}^{3} [/tex]

Solve for a.

[tex]10 = a \times 1000[/tex]

[tex] \frac{1}{100} = a[/tex]

So our exponetial equation is

[tex]y = \frac{1}{100} \times 10 {}^{x} [/tex]

The school is choosing a new mascot and new school colors. The choices for mascot are a lion, a bear, and a
porpoise, and the choices for colors are blue, black, brown, and grey. How many possible mascot and color
combinations are there?

Answers

Answer:

12 options

Step-by-step explanation:

Blue

Blue and Lion

Blue and Bear

Blue and Porpoise

Black

Black and Lion

Black and Bear

Black and Porpoise

Brown

Brown and Lion

Brown and Bear

Brown and Porpoise

Grey

Grey and Lion

Grey and Bear

Grey and Porpoise

There are 4 different colors and each of them can be assigned to 3 animals meaning there are 12 options to choose from

The circumference of a circle is 604 cm. What is the diameter of the circle?

Answers

Step-by-step explanation:

The Circumference is:

[tex]c = 2\pi \: r[/tex]

Radius r is:

[tex]r = \frac{d}{2} [/tex]

So,

[tex]c = \pi \: d \\ d = \frac{c}{\pi} \\ d = \frac{604}{\pi} \: cm[/tex]

The base of a rectangular prism has a length of 36 centimeters and a width of 29 centimeters. If the volume of the rectangular prism is 7,830 cubic centimeters, how long is the HEIGHT of the prism?

Answers

Answer:

7.5

Step-by-step explanation:

you think about the way you would normally solve it but a bit backwards therefore multiply 36x29 and that equals 1,044 and divide that from 7,830 and thats 7.5 multiply to check

write the sentence as an inequality. A number x is greater than 6 but less than 10.

Answers

Answer:

6>x<10

Step-by-step explanation:

also put a line under both > <

What is the least amount of green ooze any one contestant carried?

Answers

Answer:

Step-by-step explanation:

Hey there. In the comments above, let's list these fractions and convert them into decimals for a more simple comprehension level:

0; 1/8; 3/8; 1/2; 5/8; 3/4; 7/8; and 1. The converted list below will correspond with these fractions in order:

0; 0.125; 0.375; 0.5; 0.625; 0.75; 0.875; and 1.00.

Looking at these decimals, 1.00 is the greatest amount as it is the only fraction that converted to a whole number.

find the area of the triangle
answer in digital format only

Answers

Answer:

Step-by-step explanation:

Assume that each cell on the grid represents one unit. One can use the formula, ([tex]A=\frac{(base)(hieght)}{2}[/tex]) to find the area of the triangle. One can see that the base of the triangle is, (11), and the height is (6). Substitute in the given values and solve for the area,

[tex]A=\frac{(11)*(6)}{2}[/tex]

[tex]A=\frac{66}{2}[/tex]

[tex]A=33[/tex]

A) 96
B) 59
C) 128
D) 102

Answers

No link needed...::answer is right here....A.96 because the two angles are the same

Which is the equivalent expression, please help!

Answers

Answer:

The first choice

Step-by-step explanation:

Choose the equation that best describes the image.

Answers

Answer:

Step-by-step explanation:

your welcome!!!!!!! :D :)

what is 4/5 + 1/3 i am just checking for my maths test

Answers

Answer:

Exact Form:

17/15

Decimal Form:

1.1333333.....

Mixed Number Form:

1 2/15

Answer:

17 / 15

Step-by-step explanation:

LCM of 3 and 5 is 15.

4 / 5

= ( 4 / 5 ) x ( 3 / 3 )

= 12 / 15

1 / 3

= ( 1 / 3 ) x ( 5 / 5 )

= 5 / 15

( 4 / 5 ) + ( 1 / 3 )

= ( 12 / 15 ) + ( 5 / 15 )

= ( 12 + 5 ) / 15

= 17 / 15

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