Mathematics Middle School

Can anyone help me? I'll give 20 points

A weir is used to measure water flow in a channel. For a rectangular broad crested weir, the flow Q in cubic feet per second is related to the weir length L in feet and height H of the water by Q = 1.6LH3/2. Find the water height for a weir that is 3 feet long and has a flow of 38.4 cubic feet per second.

Answers

Answer 1

Answer:

Top answer · 0 votes

Q = 1.6LH3/2 38.4 = 1.6(3)(H3/2) H3/2 = 38.4/4.8 H3/2 = 8 (H3/2)2/3 = 82/3 Note that 82/3 = (3√8)2 = 22 = 4 The height is 4 ft  

Step-by-step explanation:

Related Questions

-7(n+3)-8(1+8n) pls help

Answers

I believe the answer is 631?

Answer:

−71−29

Step-by-step explanation:

Distribute

Rearrange terms

Distribute

Subtract the numbers

Combine like terms

Solution

Hope this helps!!! good luck!!

help me!!!!! asap!!!

Answers

I think #1. is a letter C

and #2 is letter B

That is my answer#Study wellO:-)

Answer:

The answer for the first question is C) 13. For the second one, it is E) None of the above statements must be true.

I hope this sorta helps...

-thatLilWeeb

im about to cry
please help

Answers

Answer:

Try D

Step-by-step explanation:

Answer: i'm going to sound real stup!d but i think it's B

Step-by-step explanation:

How many cubes with edge lengths of 1/2 inch are needed to fill this cube?

Answers

Answer: 8 squares would be needed 4 on the bottom and 4 on the top

Please help! I would be more thankful if you really helped.

Answers

Answer:

2a + 15 = 51

Step-by-step explanation:

51 is the total inches

15 would be the 5 three inches (aka 5 x 3)

then you have mystery amount of 2 inch pieces which would be 2a

hope it helped

It is the last answer!!

The rabbits ate three fifths of the celery crop in each of 8 gardens. What fraction of celery crop did they eat in all?

twenty four fortieths
eleven fifths
eleven fourteenths
twenty four fifths

Answers

Answer: twenty-four fifths

Step-by-step explanation:

3/5 x 8 → 3/5 x 8/1 (8/1 is the same as 8) → 3 x 8 = 24 and 5 x 1 = 5 so 3/5 x 8 is 24/5

Charlene’s dress cost $270. Three days later, it went on sale for 35% off. How much could she have saved if she waited three days?

Answers

Answer:

94.5 dollars

Step-by-step explanation:

Answer:

94.50$

Step-by-step explanation:

270 / 20 = 13.50

13.50 x 7 = 94.50

Hope this helps!

Rewrite the expression in the form 5^n
(5^3)^2=?

Answers

This problem is all about bases and exponents.  Because we have a quotient and the bases are both 5's, that means that we can use the rule of exponents for quotients to rewrite and simplify:

That's the simplification as long as you are "allowed" to leave the exponent as a negative number.

The answer is 5^6 because if we have an exponent to the power of exponent we have to multiply the powers..

Hope it is useful :)

Find the solution to this system:

A. (2, 1)
B. (1, –2)
C. (1, 2)
D. (–1, 2)

Answers

Answer:

C. (1,2)

Step-by-step explanation:

They intersect at 1,2.

Answer: C
Explanation: At point (1,2) they intersect

Please help, the answers I get just don't match any of the options

Answers

I would personally go with A... this question is slightly confusing... if I were you I would ask for assistance from the teacher.

please help i am really bad at math































Item 14
Question 1
MODELING REAL LIFE You earn $35 for washing 7 cars.

a. How much do you earn for washing 4 cars?

You earn ? for washing 4 cars.
Question 2
b. You earn $45. How many cars did you wash?

You washed ? cars

Answers

Answer:

A. You earn $20 for washing 4 cars.

B.You washed 9 cars.

Step-by-step explanation:

Answer A:

First you have to divide 35 by 7 to figure out how much money you get per car.

You'd get $5

Then you have to multiply by 4 to figure out how much money you get for 4 cars.

Answer: $20

Answer B.

You just have to divide 45 by 5 wich would get you 9.

Answer: 9 Cars

Answer:

me to but  23 = y3 +1 at the point Us implicit differentiation to find the equation ... 2 + 8y A. Implicitly Differentiate 23 X + 8y 73 +1 With Respect To X.

(help me pls) Use the bar graph to find the experimental probability of rolling a number less than 7. What is the experimental probability?

Answers

Answer:

Yes the bar is experimental

Step-by-step explanation:

Wouldn’t it be 100% of the time. On a die there is no 7 or any number greater.

Please help!!! Need it now or my mom will kill me. I have a ton of missing assingments.

Answers

The correct answer is m=88

Answer: M=88

Step-by-step explanation:

Assume M/8 is X

x+8=19

X=11+8

So M/8= 11

8*11

= 88

M=88

Btw brain is a tool and if You have missing assignments, You should make up for them and actually learn. If not, It’s useless

Not to be Nosy or anything

Hank was watching the winter Olympics and was amazed at the distance the ski jumpers were able to travel. By looking at their posture in flight Hank was able to determine how they stayed in the air for so long. How does body posture affect flight in ski jumping?

Bending the knees keeps the body tucked for better distance
Holding the arms away from the body allows for better balance and further distance
Leaning backward and more upright increases the chance to ride a thermal
Leaning forward with the head close to the tips of the skis allows for better aerodynamics

Answers

Answer:

Leaning forward with the head close to the tips of the skis allows for better aerodynamics

The body posture that impact the flight in ski jumping should be like Leaning forward with the head close to the tips of the skis allows for better aerodynamics.

What is ski jumping?

It is the winter sport where the competitors focus for accomplishing the jump i.e farthest where it should be slide down on the skids that should be designed specially curved ramp.

So based on this, we can say that the leaning forward should be the good body posture that impact the flight in ski jumping.

Learn more about distance here: https://brainly.com/question/24145911

A real estate agent received 2.5% commission for a house that sold for $175,000. How much was the agent's commission?

Answers

A : 4375
175,000 of 2.5

Answer:

I think $70,000

Step-by-step explanation:

I took $175,000 and divided it by 2.5

Hope it helps!

Have a great day!

If I am right please thank, rate and please give brainliest.

17-7x2 power of 2
PLEASE HELP!! ASAP!!! PLEAEE HELPP!!!

Answers

17-7*4
10*4
=40 your answer is 40
40 is the correct answer!! :))

hallppp!!

MODELING REAL LIFE Lightning strikes Earth 1000 times in 10 seconds.

a. How many times does lightning strike in 12 seconds?

Lightning strikes ? times in 12 seconds.

Question 2
b. How many seconds does it take for lightning to strike 7250 times?

It takes ? seconds for lightning to strike 7250 times.

Answers

Answer:

Modeling Real Events

1000 times in 10 second= 100 times per second Hence 100 × 12 = 1200 times [tex] \frac{7250}{100} = 72.5[/tex]

estimate –15.52 + 54.25

Answers

Answer:

38.73 I don't really have any other info so I just hope this is your answer

Answer:

-15.52+54.25=38.73

me need help on homework

Answers

Answer:

I think B thats just what i thnk tho

Step-by-step explanation:

It’s b I answered the exact same question

Please Help! How to simplify the exponential Expression of (2a^-4 b)^3 (3a^2 b^-2)^2
Thanks!
<3

Answers

The answer is 72/a^8b
72 over a^8b

Hi can anyone answer this?

Answers

Answer:

X= 3.5 Y= -1 Hence 2) is correct
I think it’s Y = -1 I’m not completely sure but hopefully this helps

In simplest form, what is the distance between (-5, 6) and (10, -4)?

Answers

Answer:

hello it is (-5, 10)

Step-by-step explanation:

ugyfguwfhjbfhj

Which of the following represents a nonlinear function?
F. y = 4x2

G. y = x

H. y = -9x

I. y = 8x + 10

Answers

Answer:

G

Step-by-step explanation:

I’ve done this math before so I know I am right.

Can you help me with this worksheet

Answers

1. Vertical
2. Adjacent
3. Complementary
4. 72
5. X= 33
1.vertical
2.adjacent
3.complementary
4.x=102°
5.x=33

Plssss Help!!!
Which function is nonlinear?

Answers

Answer:

Algebraically, linear functions are polynomials with highest exponent equal to 1 or of the form y = c where c is constant. Nonlinear functions are all other functions. An example of a nonlinear function is y = x^2. This is nonlinear because, although it is a polynomial, its highest exponent is 2, not 1.

Step-by-step explanation:

pleaseeee help
I really need help

Answers

9. L’(-1,-3) Z’(-5,-5) F’(-4,-2)

10. B

I think these are right if they aren’t I’m sorry

Answer:

9. L’(-1,-3) Z’(-5,-5) F’(-4,-2)

10. B

The average adult can walk 11,616 feet per hour. How many meters per minute is this?

Answers

59.00928
I just did the math

Choose ALL the equivalent ratios.

Answers

A and d because A) the numerator and the denominator added an additional 3 to it . And on d the numerators were multiplied by 2 to get the denominators

15 points!! Will give brainliest for smartest answer!

Answers

Answer:

120

Step-by-step explanation:

since she is trying to keep it under 40 each month and there is a flat fee of 34$ she will have 6$ left then you just have to divide so you will do 6/0.05

120 is awnser ahhahshsbxnndnxnx

Does anyone know the answer to this?

Answers

Answer:

36

Step-by-step explanation:

1/5 is basically 2/10 and thats  12 of 60 so you subtract 12 from 60 and then you get 48 and 1/4 of 48 is 12 so then 12 minus 48 is 36 BOOM

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