Answer:
A
Step-by-step explanation:
To determine the number of possible arrangements for 6 out of 8, we should use combinations. That is
ₐC₆ = 8!/(6!2!)
Answer: b. Combination
-0.75-(-2/5) + 0.4 + (-3/4)
Simplify it :-)
-0.75 +
![\frac{2}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B5%7D%20)
+ 0.4 -
Add the like terms / add your decimals with your decimals & your fractions with your fractions.
(-0.75 + 0.4) + (
![\frac{2}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B5%7D%20)
-
![\frac{3}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B4%7D%20)
)
Simplify :-)
0.35 + (
![\frac{8}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B8%7D%7B20%7D%20)
-
![\frac{15}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B15%7D%7B20%7D%20)
)
Simplify :-)
0.35 + (-
![\frac{7}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B20%7D%20)
)
Now you turn your decimal into a fraction.
0.35 = 35/100 = 7/50
NEW PROBLEM :
![\frac{7}{50} +](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B50%7D%20%2B%20)
+
![\frac{7}{20}](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B20%7D%20)
= ??
Make both denominators 100.
![\frac{7}{50}](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B50%7D%20)
×
![\frac{2}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B2%7D%20)
= 14 / 100
7/20 × 5/5 = 35/100
NEW PROBLEM :
![\frac{14}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7B14%7D%7B100%7D%20)
+
![\frac{35}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7B35%7D%7B100%7D%20)
=
![\frac{49}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7B49%7D%7B100%7D%20)
:-)
Answer:
Deductive Reasoning
Step-by-step explanation: