Answer:
Step-by-step explanation:
replace x with -1
solve exponents
-1² = -1 × -1 = 1
subtract
Answer:
-2.46
Step-by-step explanation:
-12.41+9.95=-2.46
Answer:
0.027 to the nearest thousandth.
Step-by-step explanation:
There are 14 marbles in the bag, so:
Prob( a blue on the first draw) = 5/14.
Prob( a blue on the 2nd draw) = 4/13.
Prob( a blue on the 3rd draw) = 3/12 = 1/4.
So the required probability is 5/14 * 4/13 * 1/4
= 20/ 728
= 0.02747.
Answer:
z=-8.7
Step-by-step explanation:
-0.3z=-17.4-2.3z
10(-0.3z)=10(-17.4-2.3z)
-3z=-174-23z
20z=-174
z=-8.7
Check:
-0.3z=-17.4-2.3z
-0.3(-8.7)=-17.4-2.3(-8.7)
2.61=-17.4+20.01
2.61=2.61
