Ne tried to evaluate an expression. Here is her work: 10 - 4 + 2(4)
= 10 - 4 + 8?
Step 1
Time
elapse
= 10 - 4 + 64
Step 2
8.
00
= 6 + 64
Step 3
SmartSc
out of 100
= 70
Step 4
Is Justine's work correct?
30
No, Justine made a mistake going from the given expression to Step 1.
Justine should have squared 4 before multiplying. The order of operations
says to evaluate exponents before you multiply.
No, Justine made a mistake going from Step 2 to Step 3. Justine should have
added before she subtracted. The order of operations says to add before you
subtract.
Yes, Justine's work is correct.

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

nope

step-by-step explanation:

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.