Answer:
B. There is no solution; x and y are eliminated and you get the false statement 0 = 20.
Step-by-step explanation:
According to the elimination method, the two equations are
y + 3x = 10
−y − 3x = 10
If we solve it
0 = 20
As x and y would be eliminated due to positive and negative signs
Therefore the option b is correct
Answer:
I believe is 1105
Step-by-step explanation:
You first find the difference between 7 years and 3 years which is 4 years.
Then you subtract 642 and 200, you get 442. Then you divide 442 by 4 years to find how much cm it grows in a year to then multiply by 10 years.
When dividing 442 by 4 years you get 110.5 cm. You multiply it by 10 years and know you get 1101. Hope this helps!
To solve the given matrix equation, we set up
Ax=B
where
A=[[6,-1],[-2,2]]
B=[2,16]
To solve for x, premultiply by the inverse of A
x=A^(-1)B
The inverse of A can be found as
A^(-1) = [[2,1],[2,6]]/(6*2-(-1)(-2)) [2,16]
=[[2,1],[2,6]]/10 [2,16]
=[[0.2,0.1],[0.2,0.6]] [2,16]
Verify the solution by matrix multiplication:
x=0.2*2+0.1*16=2
y=0.2*2+0.6*16=10
substitute into original equation,
6x-y=12-10=2 ok
-2x+2y=-4+20=16 ok.
It will be your duty as a student to find the right option from the answer.
Answer: It does not matter whether you multiply the radicands or simplify each radical first. You multiply radical expressions that contain variables in the same manner. As long as the roots of the radical expressions are the same, you can use the Product Raised to a Power Rule to multiply and simplify.
Step-by-step explanation:
Have 15 blocks and take away 4 blocks until you cant take away 4 anymore it will give you 3 3/4
