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
love history [14]
3 years ago
13

NEED ANSWERS QUICK FOR ALL 3!! WILL AWARD BRAINLIEST! PLS HELP!!!

Mathematics
2 answers:
icang [17]3 years ago
6 0

Answer:

a.4

b.7/2

c.10/3

Step-by-step explanation:

GalinKa [24]3 years ago
6 0

Answer:

The modal or mode is 1

The median is 2.5

the mean is 40

Step-by-step explanation:

1 has the most of its number

the median since there is a even amount, its between 2 and 3 which is 2.5

and the mean is

0+0+0+0+1+1+1+1+1+2+2+2+3+3+3+3+4+4+4+5

0+5+6+12+12+5 = 40

You might be interested in
The length of a rectangle is 2 cm longer than its width if the perimetier of the rectangle is 44cm, find its area
Natasha2012 [34]
L=w+2 and 2w+2l=44

substitute equation for length in perimeter equation

2w+2(w+2)=44
2w+2w+4=44
4w+4=44
4w=40
w=10

substitute width into length equation to get length

l=10+2
l=12

a=lw
a=12*10
a=120 cm^2
7 0
3 years ago
Y/5+7=9 solve the problem by using addition or subtraction and multiply and divide
Elis [28]

Answer:

y=10

Step-by-step explanation:

y/5+7=9

y/5=9-7

y/5=2

y=2*5

y=10

3 0
2 years ago
Simplify . 16x3y2/36xy2z3
dezoksy [38]

\frac{16 {x}^{3} {y}^{2}  }{36x {y}^{2} {z}^{3}  }  =  \frac{4 {x}^{2} }{9 {z}^{3} }  \\   \frac{ {x}^{a} }{ {x}^{b} }  =  {x}^{a - b} \\  {x}^{ - a}   =  \frac{1}{ {x}^{a} }

3 0
3 years ago
A radio telescope has a parabolic surface, as shown below.
krek1111 [17]
OK, so the graph is a parabola, with points x=0,y=0; x=6,y=-9; and x=12,y=0

Because the roots of the equation are 0 and 12, we know the formula is therefore of the form

y = ax(x - 12), for some a

So put in x = 6

-9 = 6a(-6)

9 = 36a

a = 1/4

So the parabola has a curve y = x(x-12) / 4, which can also be written y = 0.25x² - 3x

The gradient of this is dy/dx = 0.5x - 3

The key property of a parabolic dish is that it focuses radio waves travelling parallel to the y axis to a single point. So we should arrive at the same focal point no matter what point we chose to look at. So we can pick any point we like - e.g. the point x = 4, y = -8

Gradient of the parabolic mirror at x = 4 is -1

So the gradient of the normal to the mirror at x = 4 is therefore 1.

Radio waves initially travelling vertically downwards are reflected about the normal - which has a gradient of 1, so they're reflected so that they are travelling horizontally. So they arrive parallel to the y axis, and leave parallel to the x axis.

So the focal point is at y = -8, i.e. 1 metre above the back of the dish.
5 0
2 years ago
Find the range of the function f(x) = 3x² - 2x for the domain (1, 2, 3).
TiliK225 [7]

Answer:

Step-by-step explanation:

4 0
1 year ago
Other questions:
  • Can we conclude that these two triangles are congruent?
    14·1 answer
  • (Please Help! : NO LINKS)
    12·1 answer
  • A group of friends went to lunch. The bill, before sales tax and tip was $35.55. A sale tax of 6% was added. The group then tipp
    13·2 answers
  • A negative plus a positive is always a positive? <br><br> True or False
    8·2 answers
  • Determine the range with symbols, will give Brainlist if correct
    5·1 answer
  • What are the variables in each graph? Describe how the variables are related at various
    6·1 answer
  • A letter used to represent a number in equations or expressions
    6·1 answer
  • If f(x) = 5x2 + 3, find f(-2)<br> =
    9·1 answer
  • Determine whether the systems have one solution, no solution, or infinitely many solutions. 3x-2y=3; 6x-4y=1
    14·1 answer
  • What is the inverse of the equation y=3x ?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!