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
ira [324]
3 years ago
5

Work out the area of this circle. Give you answer in terms of pi and state it’s units

Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0

Answer:

49π

Step-by-step explanation:

area of circle = πr^2

<em>Handy Tip: cherry pies delicious; apple pies are(R) too(2)! so C = πd and A = πr^2</em>

diameter = 14 cm

radius = 14/2 = 7cm

area of circle = π(7)^2

area of circle = 49π

Hope that helps!

You might be interested in
QUICKKKK!!!!
Sedbober [7]

Answer:

a) >
b) >
c) <
d) >

Step-by-step explanation:

a) -3 is closer to 0 so it is larger
b) A positive number is always larger than a negative
c) A positive number is always larger than a negative
d) -234 is 1 larger than -235 which makes it larger

8 0
3 years ago
Read 2 more answers
Value of this pronumeral
STatiana [176]
90+80+90+x=360
260+x=360
x=100
4 0
3 years ago
HELPPPPPP!!!<br><br> Rule: y=x-1/4
Nimfa-mama [501]

Step-by-step explanation:

if x=1/4 then y=1/4-1/4=0

if x=13/4 then y=13/4-1/4=12/4=3

if x=2 then y=2-1/4=8/4-1/4=7/4=1 3/4

7 0
3 years ago
The graph represents the average heights of boys in the United States from age two to age ten. A line of best fit has been drawn
kogti [31]

Answer:

A gotchu Just took the test got 100

Step-by-step explanation:

B

6 0
3 years ago
Read 2 more answers
Two surfers and statistics students collected data on the number of days on which surfers surfed in the last month for 30 longbo
Alisiya [41]

Answer:

Do not reject H0. The mean days surfed for longboarders is significantly larger than the mean days surfed for all shortboarders

Step-by-step explanation:

The null hypothesis is that  the mean days surfed for all long boarders is larger than the mean days surfed for all short boarders

H0:  μL > μs      against the claim Ha:  μL≤ μs

the alternate hypothesis is the mean days surfed for all long boarders isless or equal to  the mean days surfed for all short boarders (because long boards can go out in many different surfing conditions)

The test statistic is

t= x1- x2/  √s1/n1+ s2/n2

1) Calculations

Longboards

Mean

ˉx=∑x/n=4+8+9+4+9+7+9+6+6+11+15+13+16+12+10+12+18+20+15+10+15+19+21+9+22+19+23+13+12+10/30

=377/30

=12.5667

Longboard Variance S2=[∑dx²-(∑dx)²/n]/n-1

=[831-(-13)²/30]/29

=831-5.6333/29

=825.3667/29

=28.4609

Shortboard Mean

ˉx=∑x/n=6+4+6+6+7+7+7+10+4+6+7+5+8+9+4+15+13+9+12+11+12+13+9+11+13+15+9+19+20+11/30

=288/30

=9.6

Shortboard Variance S2=[∑x²-(∑x)²/n]/n-1

=[ 3270-(288)2/30]/29

=3270-2764.8/29

=505.2/29

=17.4207

2) Putting values in the test statistic

t=|x1-x2|/√S²1/n1+S²2/n2

t =|12.5667-9.6|/√28.4609/30+17.4207/30

t =|2.9667|/√0.9487+0.5807

t=|2.9667|/√1.5294

t=|2.9667|/1.2367

t=2.3989

3) Degree of freedom =n1+n2-2=30+30-2=58

4) The critical region is t ≤ t(0.05) (58) =1.6716

5) Since the calculated t= 2.4 does not fall in the critical region t(0.05) (58)  ≤ 1.6716 we do not reject H0.

The p-value is 0.008969. The result is significant at p <0 .05.

6 0
3 years ago
Other questions:
  • Chris joined a website that offers a special rate for music downloads to its members. The membership costs $19.95 and then you c
    7·1 answer
  • EASY MATH QUESTION FOR 20 PTS!!
    11·2 answers
  • Plz help my mom said i had to ketchup of work
    5·1 answer
  • Find an equation of the line with x-intercept 8 and y-intercept 4
    10·2 answers
  • The box plot represents this data set. {16, 16, 16, 18, 18, 20, 24, 28, 30, 34} What value does the letter A represent on the bo
    10·2 answers
  • The axis of the sphere below is 14 units in length. What is the surface area of the sphere?<br>​
    8·1 answer
  • Greg borrows $1975 at a simple interest rate of 5% for 3 years. Linda borrows $1975 at a simple interest rate of 4.5% for years.
    11·1 answer
  • The cost to rent a car is $25 plus an additional $0.15 for each mile the car is driven. How many miles was a car driven if
    12·1 answer
  • Help !!! Which formula can be used to describe the sequence
    12·1 answer
  • QuestionUse the Distributive Property to simplify the expression.9(3+c+4) =
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!