The first equation must be multiplied by 18 and second equation must be multiplied by 8
<em><u>Solution:</u></em>
<em><u>Given system of equations are:</u></em>
--------- eqn 1
-------------- eqn 2
Multiply the second equation by 8 both sides to remove the fraction in the variable y
Multiply the first equation by 18 both sides to obtain the coefficient -3 in the variable y
Add eqn 3 and eqn 4
Thus the y-term is eliminated
Therefore, first equation must be multiplied by 18 and second equation must be multiplied by 8
To find the percentage of a number multiply it by whatever decimal you are using or a fraction that you have to convert into a decimal to find the percent. Example: What is 10% of 25? (.10)(25) = 2.5 so 10% of 25 is 2.5.
Answer:
20 cm
Step-by-step explanation:
A cube has 6 faces. Two of the faces are bases. The other four faces are lateral faces.
Let the area of 1 face = x
4x = 1600 cm^2
x = 400 cm^2
Since the area of 1 face is 400 cm^2, then the side length is sqrt(400 cm^2) = 20 cm
Answer: 20 cm
Answer: a=-4
Step-by-step explanation:
