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2 years ago

Hello can you help me with this problem ?

Mathematics

1 answer:

Lelechka [254]2 years ago

3 0

Step-by-step explanation:

please mark me as brainlist please

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One-third of a number is 7. Find the number.

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Answer:

Step-by-step explanation:

21/3 = 7

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3 years ago

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A construction company plans to invest in a building project. There is a 30% chance that the company will lose $30,000, a 40% ch

Gnom [1K]

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

30% chance that the company will lose $30000.

40% chance of a break even that there is no loss and no profit.

30% chance that the company will profit $ 60000.

As we know the formula for "Expectation":

So, Expected value will be

$\frac{30}{100}\times (-30000)+\frac{40}{100}\times 0+\frac{30}{100}\times 60000\\\\=03\times (-30000)+0.4\times 0+0.3\times 60000\\\\=-9000+18000\\\\=\$9000$

Expected value is $9000. So, the company should proceed with the project.

Hence, Option 'A' is correct.

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2 years ago

If you apply the changes below to the linear parent function, f(x) = x, what is the equation fo the new function?

ad-work [718]

Answer:

Step-by-step explanation:

For a function in the form f(x) = x, we can say:

the function f(x) = ax is a vertical stretch if a>1 and compress if 0<a<1
the function -f(x) is the original, flipped over x-axis

keeping the 2 rules in mind, we can say that

vertical stretch by a factor of 3 would make it f(x) = 3x

Then

flip over x-axis would make it f(x) = -3x

answer choice D is right

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3 years ago

Use deductive reasoning to show that the following procedure always produces the number 6. Procedure: Pick a number. Add 4 to th

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Answer:

procedure always produces 6

Step-by-step explanation:

Let 'n' be the unknown number

Add 4 to the number : n+4

multiply the sum by 3.

multiply the sum n+4 by 3

$3(n+4) is 3n+12$

Now subtract 6, so we subtract 6 from 3n+12

$3n+12-6=3n+6$

finally decrease the difference by the tripe of the original number

triple of original number is 3n

$3n+6-3n= 6$

so the procedure always produces 6

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3 years ago

After reading The Lord of the Rings, Francesca signs up for archery lessons. At her first lesson, she sets up her target 5 feet

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Answer:

$3$ times

Step-by-step explanation:

$5x=15$

Divide both sides by 5

$x=3$

Hope this helps

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