Solve the system of equations using elimination.
1 answer:
Answer:
q= 6
r= 7
Step-by-step explanation:
Multiply 1st column by -2:
-30q+8r=-124
5q+8r=86
Subtract 2nd column from the first column:
-35q= -210
Solve for q:
q=6
Subtract q=6 by any of the two equations, so:
-30q+8r=-124
-30*6+8r=-124
Solve for r:
r=7
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Answer:
13.
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14. 
15. 2.
Step-by-step explanation:
13. 
= 
= 
= 
= 
= 
= 
=
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14. 



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15. ![\sqrt[3]{2} * \sqrt[3]{4}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B2%7D%20%2A%20%5Csqrt%5B3%5D%7B4%7D)
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= ![\sqrt[3]{2 * 2 * 2}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B2%20%2A%202%20%2A%202%7D)
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Hope this helps!
I highly believe that the answer is 35
Pythagorean theorem: a²+b²=c²
Where c = length of the hypotenuse (diagonal of a triangle)
60²+40²=c²
3600+1600=c²
5200=c²
c=√5200
c ≈ 72.11 ft
Step-by-step explanation:
A(-4,2)=A'(-4,-2)
B(4,7)=B'(4,-7)
C(5,1)=C'(5,-1)