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Sergeeva-Olga [200]
2 years ago
9

1. Who authored the web page? How do you know?

Mathematics
2 answers:
Deffense [45]2 years ago
5 0
I can’t see where someone authored this web pages and no I don’t know unless if you’ve shown me it.
Sergio039 [100]2 years ago
5 0
1+1=2 so that’s why this is the answer for ur question by lrr we broke James
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Which of the following is the solution set of x² + 8x + 12 = 0?<br><br> {2, 6}<br> {-2, -6}<br> {}
pantera1 [17]
(-2,-6) because when factored the values of x are -2,-6

<span>x² + 8x + 12 = 0
(x+6)(x+2)=0

x+6=0
----> x=-6

x+2=0
----> x=-2</span>
6 0
3 years ago
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An angle measures <br> 49°<br> . What is the measure of its complement?
Viktor [21]
Well if t's a right angle then the answer would be 41° but if it's an obtuse angle the it could vary from 91°-179°. For a straight angle, the answer would be 51° and for an acute angle; it could vary from 1°-89° I hope this helped ^^
4 0
2 years ago
A melting spherical block of ice has its surface area changing at the rate of 24 inch2 /sec at the time the radius is 3 inches.
emmainna [20.7K]
The surface area of the sphere is:
 A = 4 * pi * r ^ 2
 Deriving we have:
 A '= 8 * pi * r * r'
 We clear the speed:
 r '= A' / (8 * pi * r)
 Substituting values:
 r '= 24 / (8 * pi * 3)
 r '= 1 / pi inch / sec
 Then, the volume of the sphere is:
 V = (4/3) * (pi) * (r ^ 3)
 Deriving we have:
 V '= (3) * (4/3) * (pi) * (r ^ 2) * (r')
 Substituting values:
 V '= (3) * (4/3) * (pi) * (3 ^ 2) * (1 / pi)
 Rewriting:
 V '= (4) * (9)
 V '= 36 inch3 / sec
 Answer:
 
the volume of the ice is changing at 36 inch3 / sec at that moment
4 0
3 years ago
Trey runs each lap in 6 minutes. He will run at least 30 minutes today. What are the possible numbers of laps he will run today?
vlada-n [284]

Answer:

5 laps

Step-by-step explanation:

30 ÷ 6 = n

n=5

8 0
2 years ago
Which describes changing an angle of rotation?
givi [52]
I think the answer is B). because if the angle is changed if it turned on a fixed point. its changed if it translated or if the rays are changed, neither is it changed if it translated to the right either.
3 0
3 years ago
Read 2 more answers
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