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

please help and explain how you got your answer

Answers

Answer:

B, C, D are the answers

Step-by-step explanation:

Cost of the item you multiply with amount

B, C AND D ARE THE ANSWER TO THIS PROBLEM

4 math questions. I'll mark brainliest!​

Answers

Y=27x ,x+y=300,y=2(7)x

One-fifth of a number plus 51 is equal to twice the number plus 42.

Write out the equation, but don't solve it yet!

Practice
Think: What equation can you write to solve the problem?

Answers

Answer:

1/5x+51=2x+42

Step-by-step explanation:

1/5 of x, the number, plus 51  is equal to 2 times the number plus 42.

Answer:

The equation: [tex]\frac{1}{5}[/tex]n + 51 = 2n + 42

help me please...... :/

Answers

Answer:

c

Step-by-step explanation:

The possible answers are 1, 3, 4, and 5

Answers

Answer:

1

Step-by-step explanation:

im a noob please i need to get rank up choose me brainly

Write the expanded form and standard form of this number in the box below:

Four million, five hundred sixty-seven thousand, nine hundred and three hundred sixty-one thousandths

Answers

Answer:

4,567,9361

Step-by-step explanation:

Standard form:

4,567,900.361

Expanded form:

4,000,000+500,000+60,000+7,000+900+0.3+0.06+0.001

Plssssssss Help!!!!!!
A relationship between X and Y is defined by the equation y = -3 x + 1/2. Which statements are true of this relationship? Check all that apply.

Answers

a.
b.
d.
Are the answers

It costs $4 to enter the fair. Each ride costs $2.50. You have $21.50. How many rides can you go on? Write an equation, then solve.

Answers

21.50 = 4+2.50x
You can go on 7 rides
21.50-4.00= 17.50
17.50/2.50= 7

Answer:7 rides

Step-by-step explanation:

First subtract 21.50-4=17.50

Then divide 17.50 ÷2.50=7

pls answer if you can

Answers

6x

6x is the expression expressing the given.

The answer is 6x.
A product is the answer to a multiplication problem, so it’s 6 times a number

help me out this is due at midnight along with like 10 other assignments

Answers

A) y=1/2x+3 and y-1/2x=3
B)y=-4 ( for both forms)
C) y=3/4x+2 and y-3/4x=2
D)y=3x-5 and y-3x=-5
Here are the answers along with the work on how i got the answers so you can understand the topic better :)

Give the product of 3 1/3 and 1/5 in simplest form.

Please help

Answers

Answer:

2/3

Step-by-step explanation:

10/3 x 1/5 = 10/15

The answer is 2/3 that is the simplest form

can someone tell me the name of this graph please

Answers

Answer:

linar graph

Step-by-step explanation:

i spelled it wrong my bad

linear graph
sorry if that’s wrong-

which decription best compares the graphs of these two functions? y = -3x + 2 and x- 0, 2, 4 ,6 y- 2, 1, 0, -1

Answers

Y=-6 i think this is the answer

Seventy-two students chose to watch a movie on the last day of school. This is 60% of the 6th-grade class. How many total students are in the 6th grade?

Answers

Answer:

300

Step-by-step explanation:

75 multiplied by 4 is 300

Answer:

300

Step-by-step explanation:

40 POINTS!
A square pyramid is shown:



What is the surface area of the pyramid?

A. 2.46 square feet
B. 8.76 square feet
C. 5.16 square feet
D. 1.56 square feet

Answers

Answer:

B.76 square feet

Step-by-step explanation:

SA=B+L

Answer: B)  8.76 square feet

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

Explanation:

The base is a square with side length 0.6 ft, so the base area is 0.6*0.6 = 0.36 square feet.

Each lateral triangular panel has base 0.6 ft and height 7 ft. The area of one triangle is 0.5*base*height = 0.5*0.6*7 = 2.1 square feet

So four of these triangles combined give a lateral surface area of 4*2.1 = 8.4 square feet. Add this onto the base area to get 8.4+0.36 = 8.76 square feet of total surface area.

Plz help I don’t understand

Answers

Answer: I think it's "47.6 ÷ 3.9" and maybe "71.9 ÷ 6.5"

Step-by-step explanation: It's asking for you to put the boxes that have an estimated answer of 12 in the big box at the bottom. I hope this helps.

I did the math and yes it’s correct

Need Help!!
If hot dogs come 6 to a pack and rolls come 8 to a pack, how many packs of each will I need to buy if I don’t want anything left over?

Answers

8 packs of hot dogs and 6 packs of rolls. 8x6=48.

Answer:

You will need to buy 4 packs of hot dogs and 3 packs of buns

Step-by-step explanation:

4 times 6 is 24

3 times 8 is 24

Tori wants to purchase the new Canon Ivy mini photo printer. Target's regular price is $129.99. The Target sale flyer said to take 25% off of all mini printers.
What is the amount off?
What is the sale price?
If tax is 6%, how much tax will be charged for the item?
How much is the total cost?

Answers

Answer:

the amount off is $32.49, $7.79 is the tax, the sale price is $97.50, $105.29 is the total cost

HELP PLEASE EXPLAIN!!!!!!

Answers

Answer:

B) (6,21)

Step-by-step explanation:

x is increasing by 2 and y is increasing by 7 so the next pair would be (6,21)

Answer:

(-6,-21)

Step-by-step explanation:

because the the 14 + 7= 21 and 4 +2= 6 and the x/y is labeled on the left side so it would be the negative one or the first one

Without solving the systems, explain why the following systems must have the same solution.

System (a): 4 − 5 = 13 System (b): 8 − 10 = 26
3 + 6 = 11 − 11 = 2

Answers

Both systems have the same solution because of you simplify system B, it will become exactly the same as system A
(basically system b is 2(4x-5y=13) )
Xnexiejxwsxdbxjdxeddkxenxkewkdfsswxeddkns

The expression x + 16 ÷ 2 is an example of an ______________________ .

Answers

Answer:

algebraic expression

Step-by-step explanation:

because it's not answered and it has a x which is algebra

The expression i.e. x + 16 ÷ 2  should represent the example of the algebraic expression.

What is an algebraic expression?

It is also called as the variable expression where it should be comprise of the term via the operations like addition, subtraction, multiplication, division, etc.

So here we can conclude that The expression i.e. x + 16 ÷ 2  should represent the example of the algebraic expression.

Learn more about expression here: https://brainly.com/question/2363874

At the craft store, Kaylee bought a bag of blue and yellow marbles. The bag contained 40 marbles, and 20% of them were blue. How many blue marbles did Kaylee receive?

Answers

Answer:

The answer is 8

Step-by-step explanation:

The answer is 8 because

[tex]40*0.2 = 8[/tex]

A stack of 500 pieces of paper is 2.375 inches tall. Type complete answers to the questions below in the box.

1. Diego guesses that each piece of paper is 0.025 inches thick. Explain how you know that Diego’s answer is not correct.

2. Compute the thickness of each piece of paper. Show your reasoning.

Answers

Answer:

1. Diego is incorrect because 2.375 divided by 0.025 does not equal 500.

2. 2.375 / 500 = 0.00475 inches.

Step-by-step explanation:

1. We take the thickness of the stack and divide it by the thickness of each piece of paper to get how many pieces of paper are in the stack. In this case, Diego's guess indicates that there are only 95 pieces of paper in the stack.

2. The proper formula for this would question would be 2.375 / x = 500.

x represents the thickness of each piece of paper. We can solve for x by multiplying both sides by x to get 2.375 = 500x  then we divide both sides by 500 to isolate x.  

2.375 / 500 = x    

0.00475 = x

Plssssssss Help!!!!!!
Two functions are used to solve a problem.
Function A is represented by y = 3x + 10
Function B is represented by this table of values:

Answers

Answer:

is it B ?

Step-by-step explanation:

i think this is it y=3x+10 y = 3 x + 10. Use the slope-intercept form to find the slope and y-intercept.

function b okkkhshehe

Plsssssssssss Help!!!!!
Which equation to represent a relationship where Y is a nonlinear function of X? Select all that apply.

Answers

Answer: A : no

              B : no

              C : yes

              D : yes

              E : yes

              F : yes

PLEASE GIVE BRAINLIEST

Please please help no scames ty

Answers

Answer:

not mine sorry

Answer:

7059079318

Step-by-step explanation:

M1ZLSm9lRFozZmR1M0N1QXEwd2pidz09

Please help I don't understand.

Answers

Answer:

I think it is they want you to put the coordinates like (Y= 2 + X= -7)= (-7 , 2)

Step-by-step explanation:

hope this helps

They want you to put the coordinates on the graph table

A. The actual building height will be 596 ft tall. You want your model to be 3 ft tall. What will the scale factor be? For this project, the constant of proportionality is ________. Each inch of the model will represent ________ft of the actual building.
B. The actual building height will be 254 ft tall. You want your model to be 5 ft tall. What will the scale factor be? For this project, the constant of proportionality is ________. Each inch of the model will represent ________ft of the actual building.

C. The actual building height will be 1087 ft tall. You want your model to be 6 ft tall. What will the scale factor be? For this project, the constant of proportionality is ________. Each inch of the model will represent ________ft of the actual building.

Answers

Answer: the answer is c

Step-by-step explanation:

If not i'm sorry have a good day/night

me need help on this homework only

Answers

Answer:

40

Step-by-step explanation:

3/2 * 5/2= 8/2 divide will equal to 4 * 2=8 *5 = 40

( i think sorry if wrong )

You already said your answer. It’s 40

If y varies directly as x and x = -6 and y = 5, the constant of variation is
A.)-6/5
B.)-5/6
C.)5/6
D.)6/5

Answers

Answer:B, I think

Step-by-step explanation:

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