Answer:
x (children) = 58
y (students) = 66
z (adults) = 29
Step-by-step explanation:
Step 1: Write system of equations
x + y + z = 153
5x + 7y + 12z = 1100
1/2x = z
The best way to solve the systems of equations is to use an augmented matrix:
Top row: [1 1 1 | 153]
Middle row: [5 7 12 | 1100]
Bottom row: [1/2 0 -1 | 0]
And then put it in RREF form:
Top row: [1 0 0 | 58]
Middle row: [0 1 0 | 66]
Bottom row: [0 0 1 | 29]
Answer:
Triangle ABC is congruent to triangle DCB
Step-by-step explanation:
In triangle ABC and triangle DCB
Angle ACB = Angle DBC = 90 degree (given)
AB = DC (given)
BC=BC(Common)
Therefore triangle ABC is congruent to triangle DCB
Your answer is going to be D.
In order to find P, you would divide $10.25 by 50, which means the 50p is $10.50.
C SINCE IT IS A RUNOFF SENTENCE THERE SHOULD BE NO other marks
