Answer:
Sam's student council spent $39 on backpacks + paper and pens.
Step-by-step explanation:
They bought 3 backpacks for $7 each. 3 x 7 = $21.
They also filled those backpacks with paper and pens costing $6 each. 3 backpacks x $6 = $18.
Now, add the two prices.
18 + 21 = 39
<em>hope this helps :)</em>
Answer:
C: investigation
Step-by-step explanation:
Based on empirical data, experiment and logical rational reasoning...
Answer:X=21
Step-by-step explanation:
115+38+x = 174
153+ x= 174
X=174-153
X=21
Let
and
be these consecutive integers. For some base
, we can write


If

then

Now,



Squaring both sides gives

and so



(because the base has to be non-zero)