Answer:
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Step-by-step explanation:
haha mjo
Step-by-step explanation:
5x-2y=11
-2x+5y=17
eqn1×2=10x-4y=22
eqn2×5= -10x+25y=85
21y=107
y=107÷21
5x-2(107/21)=11
5x-(214/21)=11
105x-214=231
105x= 445
x=445/105=
You are basically multiplying a fraction by another fraction. In this case, (2/5) * (x³/1). The resulting equation is...... 2x³/5
18 students are 100%-37,5%-40%=22,5%
So we know that 18 students equal to 22.5. And we are looking for the anwser what 100% of students is.
SO:
x students - 100%
(22 + 1/2)x =18×100
(22 + 1/2) can be represented as just 25.5
-//- = 1800
we need to divide bot sides by 25.5
x = 1800 / 25.5
... x = 80
P(A) = 3/6 (3 out of all possible outcomes) = 1/3
P(B) = 3/6 = 1/3 again since possible odd numbers are 3 (1,3,5)
P(A/B) is basically 1/3 / 1/3
which is (3/3 = ) 1
Haven't worked with possibilities in ages so I'm not sure for the P(A/B) part! Sorry!
