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Irina-Kira [14]
3 years ago
8

a landscaper estimates that a set of plants can be installed in six hours by 12 workers the landscaper wants to finish a set of

plants in 4 hours assuming that the variables are inversely related how many workers should the landscaper bring to the job
Mathematics
1 answer:
Naddik [55]3 years ago
7 0
3 is the answer i just did it
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For every 21 litres of petrol a car can run for 80 km. How much petrol do you need (to 1 DP) to ensure the car has enough petrol
geniusboy [140]

Answer:

1

Step-by-step explanation:

5 0
3 years ago
A pair of fair six-sided dice is rolled. what is the probability that the sum of the numbers rolled is either an even number or
SpyIntel [72]
Probability is going to be 8/12 2/3 simplified

6 0
3 years ago
Perform the operation.<br> (8x2 – 7x – 2) – (6x2 – x + 3)
rewona [7]

Answer:

2 x² - 6x -5

Step-by-step explanation:

<u><em>Expansion:-</em></u>

Given that the expression

                    (8x²-7x-2)-(6x²-x+3)

                = 8x² - 6x² - 7x +x -2 -3

               = 2 x² - 6x -5

5 0
3 years ago
In a group of 28 students, 12 study both Art and Biology.
MAVERICK [17]

Answer:

100%

Step-by-step explanation:

Use conditional probability:

P(B | A) = P(B and A) / P(A)

P(B | A) = (12/28) / P(A)

We need to find the probability that a student studies art.

P(A or B) = P(A) + P(B) − P(A and B)

24/28 = P(A) + (12+12)/28 − 12/28

P(A) = 12/28

P(B | A) = (12/28) / (12/28)

P(B | A) = 1

What this means is that all of the students who study art also study biology.

3 0
3 years ago
Find the domain of the function f(x) = 7x2 + 8x - 15.
amm1812

Answer:

Domain is all real numbers or (negative infinity, positive infinity)

Step-by-step explanation:

Domain is all values of <em>x</em> (inputs) that will work with the function. Since a parabola has no limits for <em>x</em>, and all numbers work for <em>x</em>, then the domain can be any number. That leaves us with All Real Numbers as our answer.

5 0
3 years ago
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