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dlinn [17]
3 years ago
5

One crew can seal a parking lot in 12 hours and another in 15 hours. how long will it take to seal the parking lot if the two cr

ews work together?
Mathematics
1 answer:
MakcuM [25]3 years ago
6 0
This is a typical work problem in algebra. The approach to this is using the equation: Rt = 1, where R is the rate per person working, t is the amount of time worked by an individual. All their rates must equal to 1. The solution is as follows:

12/x + 15/x = 1
Solving for x,
x = 27 hours

So, if they work together, they can finish the work in 27 hours.
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Javier has basket of oranges and apples. The number of oranges is more than twice the number of apples in the basket. The differ
ser-zykov [4K]

Answer:

Its actually one solution it is solvable and only has one solution

Step-by-step explanation:

7 0
3 years ago
Solving inequalities for word problems:
zepelin [54]

For this case we have to:

x: Let the variable representing the unknown number

We algebraically rewrite the given expression:

Twice a number plus 10, is represented as:2x + 10

Three times that number less 4. is represented as:

3x-4

Thus, the complete expression is:

2x + 10> 3x-4

Subtracting 3x from both sides of the inequality:

2x-3x + 10> -4\\-x + 10> -4

Subtracting 10 from both sides of the inequality:

-x> -4-10

Equal signs are added and the same sign is placed:

-x> -14

We multiply by -1 on both sides, taking into account that the sense of inequality changes:

x

The solution is given by all values of "x" less than 14.

Answer:

x

5 0
2 years ago
A card is drawn at random from a standard pack of playing cards. Then a fair coin is flipped. What is the probability of selecti
serg [7]

Answer:

The order doesn’t matter, as the two events are probabilistically independent of one another. There are 13 spades in a standard 52 card deck, so the probability of drawing  the number 5 is 13/52 or 1/4. The probability of heads is 1/2. The probability of both occurring is the product of the two probabilities, or 1/4*1/2 = 1/8 or 12.5%.

7 0
2 years ago
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Which set of numbers shows all factors of 18
Alexxx [7]

Answer:

Step-by-step explanation: Factors of 18: The square root of 18 is 4.2426, rounded down to the closest whole number is 4. Testing the integer values 1 through 4 for division into 18 with a 0 remainder we get these factor pairs: (1 and 18), (2 and 9), (3 and 6). The factors of 18 are 1, 2, 3, 6, 9, 18.

hope this helps ^-^

5 0
3 years ago
Answer this question to get marked as brainliest!!!!
Brut [27]

Answer:

74 Degrees

Step-by-step explanation:

Mistakes were made when i said 37

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2 years ago
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