Answer:
x+y=24 so we can say
x=24-y making 3x+5y=100 become
3(24-y)+5y=100
72-3y+5y=100
72+2y=100
2y=28
y=14, since x=24-y
x=10
So there are 10 3-point questions and 14 5-point questions.
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Answer:
one in a million chance
Step-by-step explanation:
he combination can be 000000 or 999999, or anything in between. Since the odds of getting each digit is 1/10, you multiply 1/10 by itself 6 times. There's literally a one in a million chance of guessing the PIN correctly.
There is no sign in between 2b and 6.
Case 1:
Assuming the sign is '+'
Then, 2b + 6 for b = 9 is given by 2(9) + 6 = 18 + 6 = 24.
Case 2:
Assuming the sign is '-'
Then, 2b - 6 for b = 9 is given by 2(9) - 6 = 18 - 6 = 12.
Case 3:
Assuming the sign is 'x'
Then, 2b x 6 for b = 9 is given by 2(9) x 6 = 18 x 6 = 108.
Case 4:
Assuming the sign is '÷'
Then, 2b ÷ 6 for b = 9 is given by 2(9) ÷ 6 = 18 ÷ 6 = 3.
Well perimeter can be found with the equation P = 2w + 2l where p is perimeter, l is length and w is width. Substitute 18 in for l and 68 for p:
2w + 2(18) = 68
D. 2w + 36 = 68 is the equation.
1
900000+10000+3000+200+50+6