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White raven [17]
4 years ago
14

Megan and Sam were solving a system of equations. They both noticed that the two lines had different slopes. Megan said that bec

ause each line in the system had different slopes, the two lines had to intersect, which meant there was one solution to the system. Sam disagreed, and said they should also look at the y-intercepts. Who is correct?
A. Megan is correct. When two lines have different slopes, they must intersect, producing one solution.
B. Neither person makes a valid argument.
C. Sam is correct. When two lines intersect, their y-intercepts determine how many solutions there will be.
Mathematics
2 answers:
finlep [7]4 years ago
7 0

Answer:

A

Step-by-step explanation:


pochemuha4 years ago
5 0
Your answer is A. Megan is correct. When two lines have different slopes, they must intersect, producing one solution.

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kati45 [8]

Solution :

Volume of ball = Volume of outer ball - Volume of inner ball

V = \dfrac{4\pi R^3}{3} - \dfrac{4 \pi r^3}{3}\\\\V = \dfrac{4\pi}{3}( R^3 - r^3 )\\\\V = \dfrac{4\pi}{3}( 200^3 - 100^3 )\\\\V = \dfrac{4\pi}{3}(2^3 - 1^3) \times 10^6\\\\V = 2.93 \times 10^7 \ m^3

Now, density of iron is, d = 7300 kg/m³.

So, mass of iron ball is :

m = d\times V\\\\m = 7300\times 2.93 \times 10^7 \ kg\\\\m =  2.14 \times 10^{11}\ kg

Hence, this is the required solution.

5 0
3 years ago
Find the interest when the interest is 4.5 times the principal, the principle is p and the time period is 13.5 years
MrMuchimi

Answer: Interest will be 3%

Step-by-step explanation:

4.5x = x * r * 13.5

4.5x = 13.5x*r

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8 0
4 years ago
Read 2 more answers
Construct a line that is perpendicular to
kodGreya [7K]
1) The line will need to be vertical down the point of x, meaning draw a line down point x. Perpendicular lines look similar to t’s
2.) Same thing, just draw a line through point O and the line. They should look similar to t’s
Hope this helped!! I understand math can get really hard, soon it’ll all be over :)
5 0
3 years ago
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