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3 years ago

712 ÷ 74 is equal to _____.

Mathematics

2 answers:

schepotkina [342]3 years ago

7 0

Answer:9.621

Step-by-step explanation:

Nadya [2.5K]3 years ago

4 0

Answer:

9.621 (with a bar on 621)

Step-by-step explanation:

Do you want to see the long division, or an answer like that is ok?

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Im desperate like most of my question-

kvv77 [185]

<h3>Answer: 9.75 dollars</h3>

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Explanation:

There are two ways to solve this problem.

Method 1:

35% = 35/100 = 0.35

35% of 15 = 0.35*15 = 5.25

So you save $5.25, which is the discount amount.

The sale price is 15 - 5.25 = 9.75 dollars

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Method 2:

If you save 35%, then you still need to pay the remaining 65%

35% + 65% = 100%

The sale price is 65% of original price

sale price = 65% of original price

sale price = 0.65*15

sale price = 9.75 dollars

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Extra info (optional section)

The benefit of method 2 is that we can chain multiple discounts together. Consider that on top of the 35% discount, the store then decides that members (people who pay monthly) will get an extra 10% off. The natural thinking is that the total discount is 35%+10% = 45% off, but that's not correct.

We can see this if we say that the original price is say $100 and 35% off would lead to a price of 0.65*100 = 65 dollars. Then an extra 10% off means we pay 90% of that new price (65 dollars) to get 0.90*65 = 58.50

As a shortcut, we can just multiply the values of 0.65*0.90 = 0.585

Then note how 100*0.585 = 58.50 showing us a fairly fast way to compute the final sale price even if multiple discounts are applied. This can be extended to more discounts. Again, we do not add the percentages when it comes to figuring out how much the total discount percentage would be.

Since the item was $100 but now it's 58.50, this means we saved 100-58.50 = 41.50 dollars. The discount is therefore 41.50/100 = 41.50% which is close to the 45% calculated earlier, but not quite there.

7 0

3 years ago

Read 2 more answers

A campground owner plans to enclose a rectangular field adjacent to a river. the owner wants the field to contain 180,000 square

lesantik [10]

Calling x and y the two sizes of the rectangular field, the problem consists in finding the minimum values of x and y that give an area of $A=180000 m^2$ .
The area is the product between the two sizes:
$A=xy$ (1)
While the perimeter is twice the sum of the two sizes:
$p=2(x+y)$ (2)

From (1) we can write
$y= \frac{A}{x}$
and we can substitute it into (2):
$p=2(x+ \frac{A}{x})=2x+2 \frac{A}{x}$

To find the minimum value of the perimeter, we have to calculate its derivative and put it equal to zero:
$p'(x)=0$
The derivative of the perimeter is
$p'(x) = 2 -2 \frac{A}{x^2}= \frac{2x^2-2A}{x^2}$
If we require p'(x)=0, we find
$x^2=A$
$x= \sqrt{A} = \sqrt{180000 m^2}=424.26 m$
And the other side is
$y= \frac{A}{x}= \frac{180000 m^2}{424.26 m} =424.26 m$

This means that the dimensions that require the minimum amoutn of fencing are (424.26 m, 424.26 m), so it corresponds to a square field.

6 0

4 years ago

Determine the domain and range for each of the following:

LiRa [457]

Answer

Domain is the values x can be.

Range is the values y can be.

1st Graph)

D: -8 < x < 3

R: 3 < y < 9

2nd Graph)

D: -4<x<4

R: -4<y<4

3rd Graph)

-Note that this graph has an open and closed circle. Which means one is open and the other is closed on the interval. I will use brackets to make it easier.

D: [-4,3)

R: (-6,2)

6 0

3 years ago

HELP ANSWER THIS ONE QUESTION FOR ME PLEASE

Alekssandra [29.7K]

Answer:

y=2x+4

Step-by-step explanation:

8 0

3 years ago

Amin fills up his gas tank with 6 gallons of gas for a cost of $13. How much would it cost to fill a 16-gallon tank?

kotykmax [81]

Answer:

34.66

Step-by-step explanation:

divide 13 by 6 then multiply that by 16

4 0

3 years ago