1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lerok [7]
3 years ago
8

A cross-section of an irrigation canal is a parabola. If the surface of the water is 34 ft wide and the canal is deep at the cen

ter, how deep is it 9 ft from the edge?
Mathematics
1 answer:
Kaylis [27]3 years ago
6 0

Answer:

6.41 ft

Step-by-step explanation:

Equation is y=ax^2

y=15

x=16.5

15=a(16.5)^2

a=0.055

So, to get depth at 4 ft from edge, I assume my new x value is 12.5.

Derived from 16.5 - 4 = 12.5

So:

y= 0.055 * (12.5)^2

y = 8.59

To get depth, I assume subtract from center depth of 15ft.

15ft - 8.59ft = 6.41ft

Answer is 6.41ft.

You might be interested in
For every 15 campers at a summer camp there is one counselor complete the table for the given ratio
zhuklara [117]

Answer:

1:15

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
-7= 4+y <br> solve for y<br><br> what is the answer? please help, thank you.
vekshin1

Answer:

-11

Step-by-step explanation:

y=-7-4= -11

8 0
2 years ago
Read 2 more answers
It takes Three hours for a highway worker to mow the grass on a stretch of highway. It takes 6 hours for a different highway wor
Hunter-Best [27]

Answer:

Step-by-step explanation:

4.5

7 0
3 years ago
2. The long-jump pit was recently rebuilt to make it level with the runway. Volunteers provided pieces of
lakkis [162]

Answer:2. It’s 24.58

How many boards did the volunteers supply round your calculations to the nearest hundred- 13.44

How many whole boards-14

Step-by-step explanation:

8 0
2 years ago
A merchant bought some shirts for $120. The next day the price charged for each shirt was reduced by $1. The merchant calculated
Goshia [24]

Answer:

The merchant buys 30 shirts originally.

Step-by-step explanation:

Let us assume that the merchant bought x numbers of shirts in $120.

So, the cost for each shirt is $\frac{120}{x}.

Now, if the cost for each shirt is reduced by 1$, then he would have bought 10 shirts more i.e. (x + 10) shirts in $120.

So, we can write the following equation as  

(\frac{120}{x} - 1)(x + 10) = 120

⇒(120 - x)(x + 10) = 120x

⇒ 120x - 10x + 1200 - x² = 120x

⇒ x² +10x - 1200 = 0

⇒ x² + 40x - 30x - 1200 = 0

⇒(x + 40)(x - 30) = 0

⇒ x = - 40 or x = 30

But x can not be negative.

Hence, the merchant buys 30 shirts originally. (Answer)

6 0
3 years ago
Other questions:
  • Tres hombres forman una sociedad y se ponen de acuerdo para repartir las ganancias en partes iguales x invierte $3500 y Y invier
    6·1 answer
  • Find the solution of the system of equations.<br>- 3x + 10y = 17<br>3x + 7y = 17​
    14·2 answers
  • Hello! I'm stuck on Pythagorean theorem in geometry. There are some numbers that suppose to have a line on top but I don't know
    15·1 answer
  • Y = 2x + 3
    14·1 answer
  • What is the solution of 7&lt;5-2x&lt;17
    5·1 answer
  • Explain how you you can tell 4/9 is in the simplest form
    15·2 answers
  • URGENTÍSSIMO!! Gente por favor me ajudem, é muito urgente e só preciso que resolvam a letra D e E
    11·1 answer
  • Angle relationships with parallel lines please help can someone answer
    10·2 answers
  • PLEASE HELP ASAP MATH QUIZE Cone B has a volume of 157 cubic in. Cone B is dilated by a factor of 2/3 to create Cone A. What is
    11·1 answer
  • Convert the expression<br> 4 square root 5 to exponential form.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!