9.78(4.3x + 5.15)
Multiply everything inside the parentheses by 9.78
42.054x + 50.367
Answer:
x=6
Step-by-step explanation:
Basically you want to isolate x into a form x=... so you have to work your way backwards.
First, notice that there is an expression (x+3) that is multiplied by 3. Let's undo that. If we remove the 3, then the right hand side will also have to change. In fact, we can divide both sides by 3.
You then get (x+3) = 9.
Now, let's subtract 3 from both sides:
x+3 -3 = 9 -3
Which simplifies to x = 6.
So with the operations "divide left and right by the same" and "subtract the same left and right", you can simplify most equations.
Answer:
1. x/2=1.75/3.5 x=1
2. 4/2=y/3.5 y=3.5
3. P (Figure Left)=3+5+2+1+4+8+3+2=28 cm
A (Figure Left)=8x2-2x1-3x2=8 cm2
4. P (Figure Left) / P (Figure Right) = 1/1.75 = 28/ P (Figure Right)
P (Figure Right)= 49 cm
A (Figure Left) / A (Figure Right) = 1/1.752 = 8/ A (Figure Right)
A(Figure Right)= 24.5 cm2
Step-by-step explanation:
1. x/2=1.75/3.5 x=1
2. 4/2=y/3.5 y=3.5
3. P (Figure Left)=3+5+2+1+4+8+3+2=28 cm
A (Figure Left)=8x2-2x1-3x2=8 cm2
4. P (Figure Left) / P (Figure Right) = 1/1.75 = 28/ P (Figure Right)
P (Figure Right)= 49 cm
A (Figure Left) / A (Figure Right) = 1/1.752 = 8/ A (Figure Right)
A(Figure Right)= 24.5 cm2
Answer:
(1-.2)x And 0.8x
Step-by-step explanation:
Reduce each option as much as possible, and then you see that the second and fourth choices are the same as the initial expression