Answer:
1 hotdog cost $2.25
1 popcorn cost $3.5
Step-by-step explanation:
Let the price of hotdog be and that of popcorn be p
For the first hour;
15p + 14h = 84 •••• (i)
for the second hour;
18p + 16h = 99 •••••(ii)
so we want to solve these two equations simultaneously
In equation 1,
14h = 84-15p
h = (84-15p)/14
Simply insert this into equation ii
18p + 16(84-15p)/14 = 99
Multiply through by 14
252p + 1344 - 240p = 1386
1386-1344 = 252p-240p
12p = 42
p = 42/12
p = $3.5
to get cost of hotdogs;
h = (84-15p)/14
Substitute p = 3.5
h = (84-52.5)/14
h = 31.5/14
h = 2.25
Answer:
1/2600 = 0.00038
Step-by-step explanation:
To find this probability, we first need to find how many ways we can fill each letter and each digit.
The letter has 26 different values, and each digit has 10 different values, so to find the total number of passwords, we just need to multiply the possibilities for each letter and digit:
Total cases = 26 * 10 * 10 = 2600
So the probability of correctly guessing is 1/2600 = 0.00038
Answer:
2.15 x 10^4
Step-by-step explanation:
since 21.5 is not between 1 and 10 we have to divide 21.5 by 10 which is 2.15 but now we have to x 10 to 10^3 which is 10^4
plz mark as brainliest
