Which statement correctly explains how Andre could find the solution to the following system of linear equations using eliminati
on?
A.-) Multiply the first equation by –7 and the second equation by 8, and then subtract.
B.-) Multiply the first equation by -7 and the second equation by 8, and then add.
C.-) Multiply the first equation by 2 and the second equation by 9, and then add.
D.-) Multiply the first equation by –2 and the second equation by 9, and then subtract.
A.-) Multiply the first equation by –7 and the second equation by 8, and then subtract.
B.-) Multiply the first equation by -7 and the second equation by 8, and then add.
C.-) Multiply the first equation by 2 and the second equation by 9, and then add.
D.-) Multiply the first equation by –2 and the second equation by 9, and then subtract.
2 answers:
You might be interested in
Answer
Find the volume of the coin is cubic millimeters.
To prove
Formula
Where r is the radius and h is the height .
As given
The $1 coin depicts Sacagawea and her infant son.
The diameter of the coin is 26.5 mm, and the thickness is 2.00 mm.
Radius = 13.25 mm
Put in the formula
Volume of coin = 3.14 × 13.25 × 13.25 × 2.00
= 1102.53 mm³ (approx)
Therefore the volume of the coin is 1102.53 mm³ .