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Gennadij [26K]
2 years ago
5

Hello! I need Help ASAP Im helping someone with their Homework TwT

Mathematics
1 answer:
Zina [86]2 years ago
4 0

Answer:

can you help me with this please? brainly.com/question/21634936

Step-by-step explanation:

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Can someone help me with this?
oksian1 [2.3K]

Answer:

  • 85 hours
  • 10 2/3 ≈ 11 days

Step-by-step explanation:

We can treat this as a units conversion problem. Each multiplier is a fraction that has the same value in the numerator as the denominator, but expresses that value with different units. We choose to cancel units we don't want, and replace them with units we do want. Ultimately, we're evaluating the expression ...

  time = quantity/rate

  (4 mi²) × (640 ac/mi²) × (5 min)/(2.5 ac) × (1 h)/(60 min)

  = (4·640·5)/(2.5·60) h = 85 1/3 h

It will take about 85 hours to plant the farm.

__

At 8 hours per day, that is (85 1/3)/(8) = 10 2/3 days.

It will take about 11 days to plant the farm.

5 0
2 years ago
What is the solution to the inequality?<br><br><br><br> -3x+2&lt;29−3x+2&lt;29
Dvinal [7]

Answer:  x>-9

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
After the knock game, train A and B both stop at the station. They left at 10:00 pm. Train A leaves every 4 minutes. Train B lea
shepuryov [24]
Train a:4 8 12
train b:6 12
5 0
3 years ago
Evaluate if 8y + 4x – (2x + 3) if x = – 2 and y = 6
marishachu [46]

Answer:

41

Step-by-step explanation:

substitute x=-2 and y=6, we know

8×6 +4×(-2) -(2×(-2) +3) = 48-8-(-1) =41

6 0
3 years ago
Read 2 more answers
Which function has an inverse that is a function?
Alex Ar [27]

On the attached diagram you can see all graphs of functions b(x), d(x), m(x) and p(x).

Finding the inverse of a function f(x):

1. First, replace f(x) with y. This is done to make the rest of the process easier.

2. Replace every x with a y and replace every y with an x.

3. Solve the equation from Step 2 for y. This is the step where mistakes are most often made so be careful with this step.

4. Replace y with f^{-1}(x). In other words, you’ve managed to find the inverse.

5. Remember: the domain of f is the range of f^{-1} and the range of f is the domain of f^{-1}.

Using this algorithm, you can find the inverse only in case C:

for m(x)=-7x:

1. y=-7x.

2. x=-7y.

3. y=-x/7.

4. m^{-1}(x)=-\dfrac{x}{7}.

5. The domain and the range of m(x) are all real numbers as well as the domain and the range of m^{-1}(x).

Functions b(x) and p(x) are not one-to-one functions (see attached diagram), then you can't find an inverse function. Function d(x) doesn't include x, then you can't also find an inverse function.

4 0
3 years ago
Read 2 more answers
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