X=weight of large box
y=weight of small box
so
3x+5y=135 and
9x+7y=279
eliminate x's
multiply first equation by -3 and add to 2nd
-9x-15y=-405
<u>9x+7y=279 +</u>
0x-8y=-126
-8y=-126
divide both sides by 8
y=15.75
sub back to find x
3x+5y=135
3x+5(15.75)=135
3x+78.75=135
3x=56.25
divide both sides by 3
x=18.75
each large box weighs 18.75kg
each small box weighs 15.75kg
The answer to your question is 177,251.28571529
Area of a triangle = 1/2 x base x height
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Find Height :
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3.75 = 1/2 x 2.5 x height
3.75 = 1.25 x height
height = 3.75 ÷ 1.25
height = 3 meters
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Answer: The height is 3 meters.
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In this question, you would be solving the expression by combining like terms.
Solve:
(5a + 3b - 6c) - (20 - 4b + 13c)
Distribute the negative to the variables inside the parenthesis.
5a + 3b - 6c - 20 + 4b - 13c
Combine like terms.
5a + 7b - 6c - 20 - 13c
5a + 7b - 19c - 20
You can't combine anymore like terms now, so your answer would be 5a + 7b - 19c - 20
Answer:
5a + 7b - 19c - 20
Answer:
3
Step-by-step explanation:
rise ÷run
6÷2=3
and yh
maths watch