the correct question in the attached figure<span>
we know that
</span>the probability
that a witness picks a particular person by chance-----> P=1/5
the probability
that all 7 witnesses would pick the same person-----> P=1/5^7=0.0000128
the answer is the option B 0.0000128
<span>There are a variety of problems in which the number of witnesses change, for example
</span><span>....find the probability that all
9 witnesses would pick the same person
</span>in this case, the probability would be-------> P=1/5^9=0.000000512<span>
</span>
Answer:
A person standing on the bank of the river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60
∘
.When he was 40m away from the bank he finds that the angle of elevation to be 30
∘
.Find
(i) the height of the tree.
(ii)the width of the river,correct to 2d.p
Answer:
$8,000 is your answer.
Step-by-step explanation:
What you are doing is multiplying.
10,000 x 4% x 20 = $8,000
$8,000 is your answer.
Answer:
1. If you're looking for h then the answer should be 1/2 :)
Step-by-step explanation:
1. 3/4 minus 1/4 = 1/2
~~ We don't want the exact because 3/4 as to be greater than h-1/4~~
2. Find fraction what will equal less than 3/4
~~ 1/2 would be reasonable because 1/2 minus 1/4 is 1/4
~~~Hope this helps~~~
Answer:
3) 3a - 2 + 3 = -2
3a = -2 + 2 - 3 = -3
a = -3/3 = -1
4) m/-6 - 18 - 4 = -16
m/-6 = -16 + 18 + 4 = 6
m = 6 · (-6) = -36
5) x/-2 - 4 + 22 = -28
x/-2 = -28 + 4 - 22 = -46
x = -46 · (-2) = 92
6) -13 = 5 + 20m - 2m
-13 = 5 + 18m
-18 = 18m
m = -18/18 = -1
7) -2(2p - 1) = -14
-4p + 2 = -14
-4p = -14 - 2 = -16
p = -16/(-4) = 4
8) -1(8x + 20) = 12
-8x - 20 = 12
-8x = 12 + 20 = 32
x = 32/(-8) = -4
9) -49 = 7(2x + 3)
-49 = 14x + 21
-14x = 49 + 21 = 70
x = 70/-14 = -5
10) 3(8h - 4) + 17 = -19
24h - 12 + 17 = -19
24h = -19 + 12 - 17 = -24
h = -24/24 = -1