Answer: Choice B
rose bush: $10, shrub: $4
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Work Shown:
x = cost for one rose bush
y = cost for one shrub
Rob's equation: 8x+5y = 100
Amy's equation: 8x+8y = 112
Subtract the equations straight down (match terms)
8x - 8x = 0x = 0, x terms go away
5y-8y = -3y
100-112 = -12
After those three subtractions, we end up with this new equation: -3y = -12
That equation solves to y = 4 when you divide both sides by -3
Use this value of y to find x
8x+5y = 100
8x+5(4) = 100 ... replace y with 4
8x+20 = 100
8x+20-20 = 100-20 .... subtract 20 from both sides
8x = 80
8x/8 = 80/8 ... divide both sides by 8
x = 10
We end up with x = 10 and y = 4 pairing up. The two equations, when graphed, cross at the location (10,4). One rose bush costs $10 and one shrub costs $4.
Answer:
irrational
Step-by-step explanation:
√5 is a non terminating and non recurring number therefore it can't be written as quotient of two numbers so it is irrational.
<u>Note</u><u>:</u><u>if</u><u> </u><u>you</u><u> </u><u>need</u><u> </u><u>to</u><u> </u><u>ask</u><u> </u><u>any</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u>
Answer:
B.
Step-by-step explanation:
The symbol between JK and LM mean that they are perpendicular, it is, that at their intersection 90 degrees angles are formed (those are right angles). So, the correct option here is option B. JK and LM meet at a right angle.
Here I attach a dray of how an intersection like this must look like. I hope it is helpful for you. In the draw four right angles are formed, however, this is not necessary, coul be only one or two depending on the length of the lines segments.
7=-41-5
7=-36
false
7=3(3)-2
7=9-2
7=7
true
since one is true and one is false its not a solution of the system
Your answer would be
7 6/12
or it would also be considered 7 1/2
Hope this helps!! :]
