<span>Commutative property of multiplication.</span>
Answer:
a=(d-c)/b
Step-by-step explanation:
Subtract c from both sides:
ab+c−c=d−c
∴ab=d−c
Divide both sides by b
ab/b=d−c/b
so the answer is... a=(d-c)/b
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Hope this helps you. I apologize if it’s incorrect.
Answer:
204 cm
Step-by-step explanation:
Triangle area = base × height ÷ 2
6×4÷2=12
Rectangle area = side 1 × side 2
6×10=60
5×10=50
There are 2 triangles, so make 12×2=24, 24 is the surface area of the triangles.
There are 2 rectangles with 5 in one side, so make 50×2=100 of area of this 2 rectangles
Now just sum the areas:
100+24+60= 204
Answer:
x+y=24 so we can say
x=24-y making 3x+5y=100 become
3(24-y)+5y=100
72-3y+5y=100
72+2y=100
2y=28
y=14, since x=24-y
x=10
So there are 10 3-point questions and 14 5-point questions.
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