Which expression completes the equation? 10 • 2 + 15 ÷ 3 =? a. 10 • 17 ÷ 3 b. 35 - [ 6 + 3 (3 - 1) ] c. 5 • [( 7 - 3) + 1] d. 9 • 2 + 1 - 3

Hello there.

Order of operations stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting.

10*2+15÷3

First you had to multiply from left to right.

20+15÷3

Then you had to divide from left to right.

15÷3=5

15/5=3

5*3=15

3*5=15

Finally you add from left to right.

20+5

=25

A.

10*17/3

First you had to multiply and divide from left to right.

170/3=56.67

B. 35-6+3(3-1)

First you had to calculate with parenthesis first.

6+3*2

Then you multiply from left to right.

6+6=12

Add from left to right.

35-12=23

C.

Step-by-step explanation:

First you had to calculate with parenthesis first.

Then you add from left to right.

D.

9*2+1-3

First you multiply from left to right.

18+1-3

Then you add and subtract from left to right.

19-3=16

Hope this helps!

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-Charlie

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

boxplot