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liraira [26]
3 years ago
10

Solve the equation. Identify any extraneous solutions

Mathematics
1 answer:
Lelu [443]3 years ago
4 0
Squaring both sides of the given equation:  w^2=7w, or w^2-7w=0.  

w^2-7w=0 can be factored:  w(w-7)=0.  Then, w=7 or w=0.  Both 0 and 7 are solutions of this equation.
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Consider the ball that fits perfectly inside the cylinder. The volume of the ball is 3,052.08 cm3. What is the volume of the cyl
mixas84 [53]
We know that

[volume of a sphere]=(4/3)*pi*r³-------> r=∛[(3*Volume)/(4*pi)]
 r=∛[(3*Volume)/(4*pi)]------>  r=∛[(3*3052.08)/(4*pi)]----> r=∛729
r=9 cm

[volume of a cylinder]=pi*r²*h
r=9 cm
h=2*r----> 2*9 -----> 18cm
[volume of a cylinder]=pi*r²*h----->pi*9²*18---> 4578.12 cm³

the answer is
4578 cm³
7 0
3 years ago
A cake has a circumference of 25 1/7 inches. What is the area of the cake? Use 22/7 to approximate pi
Novosadov [1.4K]
To calculate for area given the circumference we proceed as follows:
C=2πr
where:
r=radius
thus given that C=25 1/7 in=176/7
thus plugging in our formula to solve for r we get:
176/7=2πr
thus
r=4.002~4.00 in
hence the area will be:
A=πr²
A=π×(4²)
A=50 2/7 in²


7 0
3 years ago
(140-x)/(7)+70 = 120. Please answer correctly.
slava [35]
From question,
(140-x)/7+70=120
Or, (140-x)/7=120-70
Or,140-x=50X7
Or, -x=350-140
Or, -x=210
:• x = -210 answers
6 0
2 years ago
C is the midpoint of bc, bc = 7 and CD = 3x- 5 what is the value of x
grigory [225]
What is the value of D? In order to solve, you need to find all the variable values to solve for x.
6 0
2 years ago
Read 2 more answers
What is the unit rate of 42 dollars for 3 books?
USPshnik [31]
42/3 = 14

I think the unit rate is $14. 

I hope this helps! :D
8 0
3 years ago
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