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
natulia [17]
3 years ago
15

How do I solve this?!

Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0
I think its 3 because if it was 2, the other frequencies would go hay-wire!
and the other 2 choices are completely irrelevant
You might be interested in
A parabolic arch has a height of 25 feet and a span of 40 feet. How high is the arch 8 feet from each side of the center?
Llana [10]

Answer:

The correct option is;

21 ft

Step-by-step explanation:

The equation of the parabolic arc is as follows;

y = a(x - h)² + k

Where the height is 25 ft and the span is 40 ft, the coordinates of the vertex (h, k) is then (20, 25)

We therefore have;

y = a(x - 20)² + 25

Whereby the parabola starts from the origin (0, 0), we have;

0 = a(0 - 20)² + 25

0 = 20²a + 25 → 0 = 400·a + 25

∴a = -25/400 = -1/16

The equation of the parabola is therefore;

y = (-\frac{1}{16})(x-20)^2 + 25

To find the height 8 ft from the center, where the center is at x = 20 we have 8 ft from center = x = 20 - 8 = 12 or x = 20 + 8 = 28

Therefore, plugging the value of x = 12 or 28 in the equation for the parabola gives;

y = (-\frac{1}{16})(12-20)^2 + 25 = (-\frac{1}{16})(-8)^2 + 25 = 21 \ ft.

4 0
3 years ago
Express 16 1/4in simplest radical form
elena-14-01-66 [18.8K]

Answer:

2

Step-by-step explanation:

{16}^{ \frac{1}{4} }  \: can \: also \: be \: written \: as \: (  {{2}^{4})}^{ \frac{1}{4} }

because {2}^{4}  = 16

So,

{( {2}^{4} )}^{ \frac{1}{4} }  =  {(2)}^{4 \times  \frac{1}{4} }  = 2

7 0
2 years ago
8. The square of a number decreased by 3 times the number is 28. Find all
Llana [10]
The answer is 7 i think
3 0
3 years ago
Based on the function h(t), what will be the account value five years after the account is opened?
bija089 [108]

Answer:

Option B

Step-by-step explanation:

f(t) = 5000

g(t) = 250t

h(t) = f(t) + g(t) = 5000 + 250t

After 5 years, the amount of money in the account is:

h(t = 5) = 5000 + 250(5) = 5000 + 1250 = 6250$

5 0
3 years ago
Need help with this one also.
murzikaleks [220]
Ty=x 9
Malcolm=x+2 11
fred=2x+4 22
x+x+2+2x+4=42
4x+6=42
-6 -6
4x=36
36÷4
x=9
8 0
3 years ago
Other questions:
  • Which sampling method is MOST appropriate in estimating the average number of votes for each candidate in an election across a c
    13·1 answer
  • Victoria spins the spinner 18 times, and it stops at the letter 'B' 10 times. If she spins the spinner a 20th time, what is the
    5·1 answer
  • The graph of the function f(x)=|3x| is translated 4 units up.
    12·2 answers
  • The ideal gas law, PV=nRT, is a well-known equation in science that describes the behavior of gases? P is the pressure of the ga
    6·1 answer
  • A rectangle garden is 1.25 meters wide and 3.4 meters long. What is the area of the garden
    13·2 answers
  • Lara has $1,425 in her bank account. Write and solve an equation to show how much money she started with if that amount reflects
    13·1 answer
  • In a survey of music preference, 82 out of 450 student said that they preferred country music . What percent of the students pre
    12·1 answer
  • A gas pump fills 2^-2 gallon of gasoline per second. how many gallons does the pump fill in one minute?
    15·1 answer
  • Dried bananas sell at $4.59/kg and dried apricots sell at $6.59/kg. How many of kilograms of each should be used to make a mixtu
    15·1 answer
  • A quadrilateral WXYZ contains wxy where measure of wxy=92 degrees. Once rotated 270° about the origin and translated 2 units up,
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!