Decibel is directly proportional to number of cars passing the point. That is,
69 db ----- 139 cars
x db ----- 17 cars
x = number of cars passing the point per minute on a weekend.
Then,
x= (69*17)/139 = 8.43 db ≈ 8 db
Answer:
85 and -31
step-by-step:
x + y = 54
x - y = 116
solve for x in first equation
x = 54 - y
sub into second equation
54 - y - y = 116
54 - 2y = 116
-2y = 62
y = -31
sub in x equation
x = 54 - (-31)
x = 85
4 of them
11 choices
slot method
1st slot: 11 choices
2nd slot: 10 choices (1 picked)
3rd slot: 9 choices (1 more picked)
4th slot: 8 choices (1 more picked)
11*10*9*8=7920
7920 ways
so the probabity is
1/7920
Evaluate 5c-3d+115c−3d+115, c, minus, 3, d, plus, 11 when c=7c=7c, equals, 7 and d=8d=8d, equals, 8.
andrey2020 [161]
Answer:
use substitution
(5 x 7) - (3 x 8) + 11= 35 - 24 + 11= 22
Absolute value of any number is always positive because absolute value is represent distance and distance will be always positive.
Since, Absolute value of any number is always positive because absolute value is represent distance and distance will be always positive.
So, absolute value of -11 is 11 , It means that on number line graph -11 is 11 unit left of zero.
Similarly, absolute value of -12 is 12 and it means that -12 is 12 unit left from zero.
Learn more:
brainly.com/question/12928519
