Answer:
x=-4
Step-by-step explanation:
Subtract x from 3x ( 2x )
2x+5=-3
Subtract 5 from -3 ( -8 )
2x=-8
Divide ( -4 )
x=-4
3c = 12.69
where c = # of greeting cars
Answer:
405
Step-by-step explanation:
To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

The values that are given are p = 0.84 and E = 0.03.
You can solve for the critical value which is equal to the z-score of (1 - confidence level)/2. Use the calculator function of invNorm to find the z-score. The value will given with a negative sign, but you can ignore that.
(1 - 0.9) = 0.1/2 = 0.05
invNorm(0.05, 0, 1) = 1.645
You can also solve for q which is 1 - p. For this problem q = 1 - 0.84 = 0.16
Plug the values into the equation and solve for n.

Round up to the next number, giving you 405.
The reasoning of Frank is not correct. The value of 5 is the thousandths place is 1/10 times the value of 5 in the hundredths place instead of being 10 times.
In the question, we are given the number 0.555.
We can write it as:-
0.555 = 0.500 + 0.050 + 0.005
0.500 is the value of tenths place
0.050 is the value of hundredths place
0.005 is the value of thousandths place
We know that,
0.050*(1/10) = 0.050/10 = 0.005
Hence, the value of 5 is the thousandths place is 1/10 times the value of 5 in the hundredths place.
To learn more about thousandths place, here:-
brainly.com/question/21467438
#SPJ4