Answer:
im to stupid for this
Step-by-step explanation:
LIGHTNING MCQUEEEEEEENNNNNNNNN
<span>−4.3−(−1.8−x) = 3
</span><span>−4.3 + 1.8 + x = 3
x </span>− 2.5 = 3
x = 5.5
Answer:39 years ago
Step-by-step explanation:The difference between his age and his sister's is 4.So when he was 8 she 4.So you do 47-8 which is 39.
Each spin consists in a choice of a number among 1, 3, 4 and 6. This means that there are two odd numbers and two even numbers.
You get an even number if you sum two numbers with the same parity, you get an odd number if you sum two numbers with opposite parity.
Whatever number you get from the first spin, you have a 50% chance of spinning a number with the same parity with the second spin, and a 50% chance of spinning a number with opposite parity with the second spin.
So, with each turn, you have a 50% chance of getting an even sum, and a 50% chance of getting an odd sum.
This means that, by definition, the expected number of spaces moved is

So, on average, you move 2 steps foward.
84 divided into sevenths could either be:
84 x (1/7) or simply 84/7
In the end, the answer would be 12.