80% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a single dam?

Answers

Answer 1

Answer:20%

Step-by-step explanation:

Answer 2

Answer: 20%

Step-by-step explanation:


Related Questions

How many students play a team sport but do not take dance lessons​

Answers

96. 120 - 24 = 96. hope i’m not wrong

) On a merry-go-round, 16 horses are evenly spaced on the outside perimeter. Abe is opposite
to the first horse. It takes 6 seconds for the fifth horse to reach Abe. How long will it take the merrygo-round to go around once? Draw a clear diagram to answer this question.

Help!!!!!!

Answers

I don’t know ‍♂️ I will be here at church ⛪️ I

Always, Sometimes, Never
Two similar triangles are congruent

Answers

Answer:

Similar triangles are sometimes congruent. We can consider two triangle such that the measure of all the angles are equal but the sides of one triangle is three times the side of the other triangle in such a case the triangles are not congruent but they are similar

Help
==================

Answers

Answer: 0.5

Step-by-step explanation:

17 is half of 34 and 1/2 = 0.5

Answer: 0.5  is this second grade

¿Cuál es el número x cuyo cuadrado es igual a cuatro veces la suma del número y
8?
porque​

Answers

Answer:

es 48876256542389087565

8/9 ÷ 4/9 = ??????????​

Answers

Answer:

2

Step-by-step explanation:

This expression can be rewritten as

8

----

9

======

 4

 ---

  9

If we now invert the denominator fraction 4/9 and multiply the result, we get:

 8       9

----- * ----- = 2

 9       4

Here is my answer, hope to help you

Estimate the product by rounding to the nearest

thousand 7763 x 50,737

find the estimated product

Answers

8000x 51000 = 408000000

Tom has some toy cars. 25 of them are red. He has 35 more green cars than red cars. The remaining 15 toy cars are yellow. Tom decides to pack 5 toy cars of the same colour in a box. How many more boxes of red and green toy cars are there than boxes of yellow toy cars?

Answers

Answer:

Step-by-step explanation:

red = 25

green = 25 + 35 = 60

yellow = 15

red = 25/5 = 5

green = 60/5 = 12

yellow = 15/5 = 3

Red + green = 5 + 12 = 17 boxes

yellow = 3 boxes

17 - 3 = 14 boxes

There are 14 more boxes of red and green cars than yellow cars.

Everyday Erin’s Orange stand uses 1 3/8 bags of oranges for how many days will 5 1/2 bags of oranges last

Answers

1+3/8=(8+3)/8=11/8 used per day. 5+1/2=(10+1)/2=11/2 available.

(11/2)/(11/8)=(11/2)(8/11)=88/22=4

6) The height of any child in Mr. Diaz's kindergarten class is no greater than 46 inches.
Unkno
e) Let h be the height in inches of a child in the class. Write an inequality that means that
a height is no greater than 46 inches.
h < 46
Unkno
•) Graph the inequality h < 46.
egunkno
58
60
54
56
50
52
48
46
44
40
42
0 0
Crin
mage

Answers

Answer:

full arrow going left from 46

Step-by-step explanation:

Inequalities are used to represent unequal expressions.

The inequality is: [tex]h \le 46[/tex]

The height (h) is said to be no greater than 46 inches.

The text "no greater than" means less than or equal to.

In inequalities, less than or equal to is represented with <=

So, the inequality is:

[tex]h \le 46[/tex]

See attachment for the graph of the inequality.

Read more about inequalities at:

https://brainly.com/question/18881247

Find the derivative of the function. f(x) = 4x2 − 8x + 2

Answers

Answer:

Step-by-step explanation:

Use the power rule for differentiation

[tex]f'(x)=nx^n^-^1[/tex]

[tex]f'(x)=(4\frac{d}{dx} 2x^2^-^1)-(8\frac{d}{dx} 1x^1^-^1)+\frac{d}{dx}2[/tex]

[tex]f'(x) =8x-8[/tex]

The derivative of a constant is always zero

Marlon’s fruit juice blend is made of 2 cups pineapple juice, 3 cups apple juice, and 3 cups orange juice. Which percentage of Marlon’s juice blend is orange juice? A. 25% B. 38% C. 50% D. 60%

Answers

Answer:

B. 38%

Step-by-step explanation:

Type the correct answer in the box. If necessary, use / for the fraction bar and simplify the fraction. cos(75°)cos(15°) =

will mark brainliest

Answers

Answer:

1/4

Step-by-step explanation:

using the product-to sum formulas, this is

1/2 (cos(75+15) + cos(75-15))

Answer:

1/4

Step-by-step explanation:

PLATO USER

Often scientists use rate of change equations in their study of population growth for one or more species. In this problem we study systems of rate of change equations designed to inform us about the future populations for two species that are either competitive (that is both species are harmed by interaction) or cooperative (that is both species benefit from interaction. Which system of rate of change equations below describes a situation where the two species compete and which system describes cooperative species? Explain your reasoning.

a. dx/dt= -5x + 2xy
b. dx/dt= 4x-2xy
c. dy/dt= -4y + 3xy
d. dy/dt= 2y-xy

Answers

Answer:

a: cooperative.

b: competitive.

c: cooperative.

d: competitive.

Step-by-step explanation:

The rate of change:

dx/dt

gives information about how the quantity x changes as a function of time.

If dx/dt > 0, the population x increases as the time passes.

if dx/dt < 0, the population x decreases as the time passes.

Now, let's analyze the options:

a) dx/dt= -5x + 2xy

in this case, x represents one population and y represents the other population. Where x and y should only be positive numbers because we can not have a negative population.

Notice that in this case, if y increases, then dx/dt increases.

Then we have cooperative species because the population y helps the growth of population x.

b) dx/dt = 4*x - 2*x*y

Similar to the previous case, but now as the value of y increases, the value of dx/dt decreases, then we have competitive species.

c) dy/dy = -4*y + 3*x*y

Notice that now we have the rate of change of y, in the right side, we can see that as x increases, also the rate of change dy/dt.

Then the population x helps to increase the population y, which means that the species are cooperative.

d) dy/dt = 2*y - x*y

Now as x increases, the value of dy/dt decreases, then these species are competitive.

Will give brainliest
What is the missing reason in step six?
A. Opposite sides in a parallelogram are congruent
B. SSS
C. CPCTC
D. Definition of a parallelogram

Answers

Answer: Sorry I forgot about this, I really didn’t learn anything this year but my best guess is... ( A )

CPCTC is the missing reason in step six.

CPCTC states that corresponding part of the congruent triangles are congruent.

Here, Given: ABCD is a quadrilateral,

In which AD ≅ BC and AD║BC

Prove : ABCD is a parallelogram.

Statement                                                  Reason

1. AD ≅ BC; AD║BC                                      1. Given

2.∠CAD and ∠ACD are alternative angles  2. Definition of alternative angles

3. ∠CAD ≅∠ACB                                           3. alternative angles are congruent

4. AC ≅ AC                                                    4. Reflexive property

5.△CAB ≅ △ACB                                           5. SAS congruence postulate

6. .AB ≅ CD                                                   6. CPCTC

7. ABCD is a parallelogram                         7. Parallelogram side theorem

Therefore, CPCTC is six step.

Learn more about parallelogram here:

https://brainly.com/question/26768239

#SPJ2


Solve for X
5x + 2 = 7x – 4

Answers

x = -3

I’m not sure if that’s correct but hope that helps :)

Answer:

x = 3

Step-by-step explanation:

5x + 2 = 7x – 4

-2x = -6 (Subtraction)

x = 3 (division)

divided by negative from a negative so,

negative/negative = positive.

A scientist changes the temperature of a solution at a rate of
-6°C per minute. How many minutes will it take for the solution's
temperature to change from 0°C to -54°C?
A 9 min
B 324 min
C 60 min
D 48 min

Answers

Answer: A 9 min

Step-by-step explanation:  54/6=9

          (9)    

-6-6-6-6-6-6-6-6-6=-54

how many solutions does the equation 5x-8=3x+8​

Answers

Answer:

One solution

Step-by-step explanation:

5x-8 = 3x+8

2x = 16

x = 8 = true once

Answer:

x=2

Step-by-step explanation:

5x-8=3x+8

= >

5x-3x=8+8

=8x= 16

therefore x= 16/8

ie) 2

1) Um barbante tem 10,85 metros de comprimento. Se você dividir em 5
pedaços de mesmo comprimento, quantos centímetros terá cada
pedaço?*

(a) 2,17 cm

(b) 217 cm

(C) 21,7 cm

(d) 0,217 cm

(ajudem pfvv ;)​

Answers

Answer: A

Step-by-step explanation:

It's on edge i got a 100%

Which inequality describes the relationship between points A and B on the number line?

Answers

Can you put the picture on it?

㏒7 41 pLz hElP pLZZz

Answers

Answer:

log(41)/log(7) OR 1.90839852...

You got paid $343 for 7 hours of work. Find the unit rate.

Answers

Answer:

$49 / hour

Step-by-step explanation:

343/7 = $49/hour

Answer:

49

Step-by-step explanation:

You do 343÷7 which equals your sum


Plzzzzz helpp!!!!!!!!!!!!!!

Answers

the answer is the first one!

Please help with the answer

Answers

Answer:

not parallel

Step-by-step explanation:

Actually they're Perpendicular.

1. Bruce graphs parallelogram GOAT with the coordinates G(-2,-3), 0(3.-4),A(2.-10), and T(-3,-9). At which of the following points do the diagonals meet A (0-2 B (0-3) c (1) D.-5)​

Answers

Answer:

(0,-13/2)

Step-by-step explanation:

Graph down the points and use the midpoint formula, (X1+X2)/2, (Y1+Y2)/2

kiran poured 15 cups of water into equal-sized pitches and filled 1 1/2. How much water was in the full pitcher?

Answers

9514 1404 393

Answer:

  10 cups

Step-by-step explanation:

The number of cups in a pitcher can be found by dividing cups by pitchers:

  (15 cups)/(1.5 pitchers) = 10 cups/pitcher

A full pitcher holds 10 cups.

solve by elimination
x+y= 0
2x-y= 12​

Answers

Answer:

m=2

Step-by-step explanation:

I calculated it sorry

Answer:

(x,y)= (4,-4)

Step-by-step explanation:

Thanks me later

A group of students plotted the number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week.

Graph shows 0 to 60 on x axis and y axes at increments of 10. The label on the x axis is Weekly Hours Worked, and the label on the y axis is Number of Cakes Delivered. Dots are made at the ordered pairs 12, 13 and 16, 15 and 20, 27 and 23, 21 and 26, 37 and 31, 29 and 35, 41 and 38, 46 and 42, 52 and 43, 49 and 45, 54 and 49, 51.

Which statement best describes the relationship between the number of hours spent working at the cake shop and the number of cakes delivered?

Greater hours worked, more cakes delivered
Fewer hours worked, more cakes delivered
Greater hours worked, fewer cakes delivered
There is no relationship between hours spent working and number of cakes delivered.

Answers

Answer:

As the x value increases, the y value also increases. So as one increases the other increases.

So your answer is

Greater hours worked, more cakes delivered

Step-by-step explanation:Hope this helps :-)

Answer:

It would be no other than A. :) I got this by putting a very skinny strip of paper and making the graph then, I easily just went from the 0 points and saw how the numbers on each side are both even it would make more sense as A because it is just how this works! :)

Step-by-step explanation:

How much is nine times eight ?​

Answers

8 x 9 = 72

So 72 is your answer

p(x) = x3 - 2x2 + 2x
What are the real and complex zeros of the equation

Answers

Given:

The polynomial is

[tex]p(x)=x^3-2x^2+2x[/tex]

To find:

The real and complex zeros of the equation.

Solution:

We have,

[tex]p(x)=x^3-2x^2+2x[/tex]

For zeros, p(x)=0.

[tex]x^3-2x^2+2x=0[/tex]

[tex]x(x^2-2x+2)=0[/tex]

[tex]x(x^2-2x+2)=0[/tex]

[tex]x=0\text{ and }x^2-2x+2=0[/tex]

The real value of x is 0. The equation [tex]x^2-2x+2=0[/tex] will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

[tex]x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}[/tex]

[tex]x=\dfrac{2\pm \sqrt{4-8}}{2}[/tex]

[tex]x=\dfrac{2\pm \sqrt{-4}}{2}[/tex]

On further simplification, we get

[tex]x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}[/tex]

[tex]x=\dfrac{2\pm 2i}{2}[/tex]

[tex]x=\dfrac{2(1\pm i)}{2}[/tex]

[tex]x=1\pm i[/tex]

Therefore, the real zero is 0 and the complex zeros are 1+i and 1-i.

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