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Alexandra [31]
3 years ago
7

I need help with this please

Mathematics
1 answer:
Volgvan3 years ago
7 0

Answer: No she is not.

Step-by-step explanation: The correct answer is 7.25 F, because she just put them both as positives. When you have a negative it takes away from the total, so how I think of it is you subtract from the positive number, so you could just do 11.75-4.5. Hope this helped!

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Jane travels7 mph less than2 times as fast as Mike. Starting at the same point and traveling in the same direction, they are198
Sphinxa [80]

Let:

Vj = Speed of jane

Vm = Speed of mike

d = distance

t = time

Jane travels 7 mph less than 2 times as fast as Mike, therefore:

Vj = 2Vm - 7

Remeber:

distance = speed*time

Distance traveled by mike:

d=Vm*t = Vm*6

Distance traveled by jane:

d + 198 = Vj*6

where:

Vj = 2Vm - 7

d + 198 = (2Vm-7)*6

Now, let:

d=Vm*6 (1)

d + 198 = (2Vm-7)*6 (2)

Replace (1) into (2)

6Vm + 198 = 12Vm - 42

Subtract 6Vm from both sides:

6Vm + 198 - 6Vm = 12Vm - 42 - 6Vm

198 = 6Vm - 42

Add 42 to both sides:

198 + 42 = 6Vm - 42 + 42

240 = 6Vm

Divide both sides by 6:

240/6 = 6Vm/6

40 = Vm

Vm = 40mph

Replace Vm into this equation Vj = 2Vm - 7 :

Vj = 2(40) - 7 = 80 - 7 = 73mph

4 0
1 year ago
Graph the functions f(x)=−6x+14 and g(x)=−2x+6 on the same coordinate plane. What are the solutions of the equation −6x+14=−2x+6
asambeis [7]

Answer:

2 AND 4

Step-by-step explanation:

Brainliest please

8 0
3 years ago
If Alex and Brandon work together, they will finish cleaning the school in 15 hours. Working alone, Brandon can finish the same
andriy [413]

Answer:

Alex can do the job in 60 days alone.

Step-by-step explanation:

Alex and Brandon working together, they can finish the job of cleaning the school in 15 hours. Brandon alone in 20 hours can finish the job.

So, Brandon can complete \frac{1}{20} part of the job in one hour.

Let, Alex alone can finish the same job in x hours.

So, Alex can complete \frac{1}{x} part of the job in one hour.

So, working together they do (\frac{1}{20} + \frac{1}{x}) = \frac{x + 20}{20x} part of the whole job in one hour.

Hence, from the conditions given we can write

\frac{x + 20}{20x} = \frac{1}{15}

⇒ 15x + 300 = 20x

⇒ 5x = 300

⇒ x = 60 days.

Therefore, Alex can do the job in 60 days alone. (Answer)

3 0
3 years ago
Write 2.08 three ways
topjm [15]

Answer:

2.080

2.0800

2.08000

Step-by-step explanation:

We can write 2.08 in infinite ways by simply adding zeros.

6 0
3 years ago
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What is the most likely value of the correlation coefficient of the data in the table? Based on the correlation coefficient, des
ddd [48]

<span>A correlation coefficient is a measure of the strength of dependence and correlation of a set of data. It shows how good is the fitted model to the data. It will have values ranging from -1.0 - 1.0. Having a coefficient that is the lower or the upper limit will tell you that the model best fit the data and a good correlation. However, as it goes farther from the limits then the correlation is to be a bad one.</span>

7 0
3 years ago
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