Solve the system. 4x+2y+3z=12 2x−3y+5z=−7 6x−y+4z=−3

nadya68 [22]

Answer:

$\frac{(\frac{3}{5}*1000) }{6}$

Step-by-step explanation:

First, let's find out how many words Maria has left to write. If she has already finished 2/5 of her essay, she has 3/5ths left to write. We can do 3/5 times 1000 to find out how many words are left.

$\frac{3 }{5} * \frac{1000}{1}$

$\frac{3000}{5}$

$600$

Thus, there are 600 words left to write.

Now to find the amount of time, we can find how take to write 600 words at a pace of 6 words per minute by dividing 600 by 6.

$\frac{600}{6}$

$100$

It will take 100 minutes for Maria to write the rest of her essay. Now let's think about an expression that tells us this information. It sounds like your questions is supposed to have options, but I doesn't seem like you've posted them, no worries however.

So first, the amount she has left to write.

$(\frac{3}{5} * 1000)$

We know this is 600, but we don't have to simplify it for the expression.

Now thinking back to how we found the time, we can divide this '600' by 6.

$\frac{(\frac{3}{5}*1000) }{6}$

This is the expression that shows the amount of time it will take to write the rest of the essay.

$\frac{((1-(\frac{2}{5})*1000) }{6}$ is also a valid solution.

3 0

3 years ago

Read 2 more answers

The total cost c for p pounds of copper if each pound costs 3.57

const2013 [10]

The answer is c=3.57p

8 0

3 years ago

A boat can travel 110 kilometers on 110 liters of gasoline. How far can it travel on 59 liters?

topjm [15]

59 kilometers because 110/110 is equal to 59/59

6 0

3 years ago

Read 2 more answers

At a local pizza place, the cost of a large cheese pizza is $13.99. Each additional topping is $1.25. Is the data in this situat

inysia [295]

Answer:

Continuous

Step-by-step explanation:

Here we are asked to determine that the data given to us in form of rates of pizza and the toppings is discrete or the continuous.

The discrete data always come in integers where as the continuous data can come in decimals too. For example the number if student in a class is always a discrete data where as the weight of the students in a class is continuous data.

Here we can see that the cost of pizza and the toppings are in decimals. Hence here the data is continuous

6 0

4 years ago

Suppose a 95% confidence interval for μ turns out to be (1,000, 2,100). give a definition of what it means to be "95% confident"

IRISSAK [1]

Answer:

In repeated sampling, 95% of the intervals constructed would contain the population mean.

3 0

3 years ago