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1 year ago

Solve the inequality -7x > 21. What is the graph of the solution?

Mathematics

1 answer:

sdas [7]1 year ago

8 0

<h2>Inequality</h2><h3>-7x > 21</h3>

<em>Divide both sides by −7. Since −7 is <0, the inequality direction is changed.</em>

<em>Divide 21 by −7 to get −3. </em>

<em>The image is blurred, so options "A" and "B" are very similar, it may be a mistake. But you can check which one is correct.</em>

<em />

<h2>[See attached image] </h2>

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I am having trouble understanding this: Sam bought 86 pounds of flour for his bakery. Every day he used the same amount of flour

oksano4ka [1.4K]

Answer:

the average amount of flour used each day=6.08 pounds

Step-by-step explanation:

Sam bought 86 pounds of flour for his bakery.

Every day he used the same amount of flour to make bakery items.

After 10 days, Sam was left with 25.2 pounds of flour.

Now we are asked to find the average pounds of flour that Sam used each day.

Total amount of flour used=86-25.2=60.8 pounds.

As he used the flour equal amount each day for 10 days.

So, the average flour used each day=

amount of flour used/ number of days=60.8/10=6.08.

the average amount of flour used each day=6.08 pounds

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3 years ago

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Apply the square root principle to solve (x-5)^2-40=0

Nitella [24]

Answer: {5 ± 2√10, 5 - 2√10}

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Next, square root both sides to get x - 5 = ± √40.

Notice that root of 40 can be broken down to 2√10.

So we have x - 5 = ± 2√10.

To get <em>x</em> by itself, add 5 to both sides to get x = 5 ± 2√10.

So our answer is just {5 ± 2√10, 5 - 2√10}.

As a matter of form, the number will always come before the

radical term in your answer to these types of problems.

In other words, we use 5 ± 2√10 instead of ± 2√10 + 5.

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3 years ago

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the answer is D. man

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Lets use the formula $RWT=J$ to solve this, where,

R is the rate
W is the number of workers/things
T is time
J is number of jobs/things

<em><u>"If it takes 10 seconds for 10 printers to print out 10 pages of paper"</u></em> - here -

W is 10 printers, T is 10 seconds, and J is 10 pages. We can write:

$R(10)(10)=10\\R(100)=10\\R=\frac{10}{100}\\R=0.1$

<u><em>"how many seconds will it take 50 printers to print out 50 pages of paper"</em></u><em> - here we use $R=0.1$ (previously found) to figure out T.</em>

So it will take 10 seconds for 50 printers to print 50 pages.

ANSWER: 10 seconds

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madam [21]

Answer:

3 / 8

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From the tree diagram provided :

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