3 years ago

Simplify the expression -5+i/2i Can someone please explain this to me!

1 answer:

5 0

Think of it as -5+1i/2i, since 1i=i. From there, the i's could cancel out since dividing a number by itself would just equal 1. It would then be -5+1/2 which would be simplified to -4 1/2. No need to worry about those i's at all!

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Convert 0.15 g/mL to the unit g/L.

maxonik [38]

To convert milliliters to liter, multiply a converson factor of $\frac{1000ml}{L}$ which means that for every 1 Liter, there is exactly 1000 mL. Converting 0.15 g/mL, multiply the conversion factor to cancel out the unit of milliliters, as shown in the solution below:

$0.15 \frac{g}{mL} ( \frac{1000 mL}{L} ) = 150 g/L$

The answer is 150 g/L

4 0

3 years ago

Is the inequality true or false?<br><br> 8 + 5(2 x 4) ≥ 9 x 5

-BARSIC- [3]

9514 1404 393

Answer:

true

Step-by-step explanation:

Using the order of operations to evaluate the expressions, we have ...

8 + 5(8) ≥ 9(5)

8 +40 ≥ 45

48 ≥ 45 . . . . . true