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
yulyashka [42]
3 years ago
13

Noah is working on a geometry problem that involves finding the volume of a sphere with a diameter of 9 units. His work is shown

below.
V = πr3

V = π(9)3

V = π(729)

V = 972π cubic units

Is Noah’s work correct? Explain.

A)Yes, Noah’s calculations are correct.
B)No, Noah did not simplify correctly.
C)No, Noah used the diameter instead of the radius in the calculations.
D)No, Noah did not use the correct formula for volume of a sphere.
Mathematics
2 answers:
lesya692 [45]3 years ago
8 0
No, Noah used the diameter instead of the radius in the calculations is the answer. 
Masteriza [31]3 years ago
7 0
C is the answer, no noah used the diameter instaed of the radius in the calculations 
You might be interested in
Solve the quadratic equations
Alexxx [7]

Answer:

for quadratic equation 1

y^2-10y+21=0

Step-by-step explanation:

y^2-7y-3y+21=0

y(y-7)-3(y-7)=0

(y-7)(y-3)=0

y-7=0,y-3=0

y=7,y=3

y=(3,7)

for quadratic equation 2

16p^2-8p+1=0

16p^2-4p-4p+1=0

4p(4p-1)-1(4p-1)=0

(4p-1)twice=0

4p-1=0,4p-1=0

4p=1

p=1/4 twice

for quadratic equation 3

x^2-400=0

x^2=400

x=√400

x=20

for quadratic equation 4

-16m^2-8m-1=0

multiply the equation by -

16m^2+8m+1=0

16m^2+4m+4m+1=0

4m(4m+1)1(4m+1)=0

4m+1=0 twice

m=-1/4 twice

for quadratic equation 5

-3n^2+75=0

divide both side by -3

-3n^2/-3=-75/-3

n^2=25

n=√25

n=5

6 0
2 years ago
1) Jessica charges $8 an hour for babysitting
nordsb [41]
A. The independent variable is time, as time is manipulating the value of her salary.

b. The dependent variable is her cost because what she charges for babysitting depends on how long she works.

c. y = 8x
y = how much she charges for this job
8 = the amount she charges per hour
x = number of hours babysat
6 0
3 years ago
Help plss!!show me how to do this and the answer for 20 or 15 points thx!
GarryVolchara [31]
Let me show you a website that has saved my behind so many times in high-school...

https://www.cymath.com/

4 0
3 years ago
A lion paced up and down the ridge 10 times. The ridge is 5 ft. 3 in. long. How far did the lion travel? (12 in.=1 ft.)​
Setler79 [48]

Answer:

105 ft.

Step-by-step explanation:

5 x 12 = 60

So 5 feet is 60 inches.

60 + 3 = 63

That makes the ridge 63 inches long.

When the lion went up the ridge, it traveled 63 inches.

When the lion went back down the ridge, it traveled another 63 inches, totaling 126 inches.

The lion did this 10 times.

126 x 10 = 1260

Divide 1260 by 12 to find the measurement in feet.

1260 ÷ 12 = 105

7 0
3 years ago
What do we know about a system of linear equations when is has
Radda [10]
Linear systems that have infinite solutions have the same slope and they have the same line on the graph
4 0
3 years ago
Other questions:
  • Solve for z.<br><br> z/4 −2<br> = 2<br><br><br> z =
    5·1 answer
  • PLS HELP With GEO FOR 50 PTS!!!!!
    10·1 answer
  • what are the possible lengths and widths of a rectangle if its length is 8 centimeters longer then the width and the area is les
    11·1 answer
  • Mrs.smith has 12 times as many markers as colored pencils.the total number of markers and colored pencils is 78.how many markers
    14·1 answer
  • Baldwin paid $48 for 4 movie tickets. Each ticket costs the same amount. What was the cost of each movie ticket?
    5·2 answers
  • 1
    12·1 answer
  • How many, and what type of solutions, does 6x squared - 2x + 7 = 0 have
    5·1 answer
  • Tell whether each system of equations has no solution or ,infinitely many solutions.​
    13·1 answer
  • Blank % of $10 = $5 <br><br><br> thank u for anyone who helps!!
    14·1 answer
  • Wich function describes the graph shown below?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!