there are 27 red or blue marbles in a bag. the number of red marbles is 5 less than 3 times the number if blue marbles. how many
red marbles are in the bag? how many blur marbles are in the bag
1 answer:
Let
x--------> The number of red marbles
y--------> The number of blue marbles
we know that
equation
equation
equate equation and equation
therefore
the answer is
The number of red marbles is
The number of blue marbles is
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D
Step-by-step explanation:
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Answer:
Step-by-step explanation:
4x+y=14
x-2y=8
then;
x=8-2y
substitute;
4(8-2y)+8-2y=14
32-8y+8-2y=14
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y=2.6 , work out 4x+2.6=14 to get x
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x=13.2
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cos(43)=x/18
x=18×cos(43)
x=13.2
Answered by GAUTHMATH
our number is x
we add seven (+7) to x
x+7
