Answer:
x= -7 y=9
Step-by-step explanation:
3x +9y= 60 [1]
-3x +y=30 [2] rewrite this as the following: y=30+3x
With equation [2] you substitute it into equation [1]
so it will now be: 3x+ 9(30 +3x) =60
3x+270 +27x=60
Group the like terms
3x+27x=60-270
30x=-210
x=-7
Use this answer into the same equation
So: 3(-7)+9y=60
-21 +9y=60
9y=60+21
9y=81
y=9
Answer:
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Step-by-step explanation:
Answer:
Physics isn't my strongest subject but I'll do my best to give you an explanation to help you get the answer!
Step-by-step explanation:
The equation is:
F = m g
where m=mass and g = acceleration due to gravity (gravitational force)
okay, lets substitute our numbers in the equation.
F (125N) = m g (25m/s^2)
'<em>m</em>' is our unknown.
g is equal to 625
hope this helps you get going on this problem!! feel free to leave any questions in the comments and I'll do my best to help you! :)
Answer:
You answer would be $7.54
Step-by-step explanation:
You need to subtract 32.50 from 524.96. That would be 492.46. Then subtract 492.46 from 500. Hope that helps!!
Sometimes, fractions can be written in 'improper' form, meaning that the top number (numerator) is bigger than the bottom number (denominator). So anything multiplied by a fraction like this will give a bigger number.
For example:
5 × 2/1 = 10
10 x 10/1 = 100
