You need to make a proportion. Then cross multiply and divide to find your answer.
blue 3 12
red 2 x
(2)(12) = 3x
24 = 3x
x = 8
There are 8 red marbles
Answer:
Step-by-step explanation:
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Answer:
ratio= 120:8
8/8=1
120/8=15
the unit rate is 15:1
It means that one floor is 15 feet high.
The ratio of the height of the building to the number of floors is 120:8. The unit rate is 15:1. This means that each floor of the building is 15 feet high.
Answer:
D) 86 – 18x – 8 = 12x + 18
X = 2
Step-by-step explanation:
86 – 2 (9x + 4) = 12x + 18
This question has a straight forward answer...
It's just to open up the bracket and ensure that the negative sign before the bracket multiply the values in the bracket exactly.
So opening up the bracket gives us this as the answer
86 - 18x -8 = 12x +18
86-18-8 = 12x+ 18x
60 = 30x
X = 2
Answer: The line of reflection must be x=5.
Step-by-step explanation:
Given: In the diagram, polygon ABCD is flipped over a line of reflection to form a polygon with its vertices at A′, B′, C′, and D′. Points A′, B′, and D′ are shown, but the line of reflection and point C′ are not .
coordinates of C from the graph = (4,2)
If the coordinates of C'=(6,2)
we can see that value of y isn't change with reflection therefore the line of reflection would be x= ordinate of C'+ ordinate of C divided by 2=6+4 divided by 2=10 divided by 2=5
Therefore, the line of reflection must be x=5.
