1. Simplify this expression: 13+ (-12) - (-5) = ?
O A.-30
O B.6
O C.30
OD. -6

B.6

Step-by-step explanation:

When we add and subtract, we do it from left to right

13+ (-12) - (-5)

13+-12

13-12 = 1

1 - -5

A negative negative is a positive

1 +5

6

B)6

Step-by-step explanation:

1) When solving an eqyation, always work from left to right

So

13-12=1

1-(-5)=6

*two negative signs like that make a positive*

Hope this helps!

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: