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valkas [14]
3 years ago
6

I need help I turn this in in less than 20 min

Mathematics
2 answers:
icang [17]3 years ago
8 0
Im not sure but someone else is typing
aniked [119]3 years ago
7 0
X=30/5
x=6
The answer will be
x=6
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The original price of a ski jacket was $290. It was on sale at a 25% discount. Arianna had a coupon for an additional 10% off sa
Ivanshal [37]

Answer:

Step-by-step explanation:

If the jacket was discounted at 25%, that means that you get 25% off, right?  What it also means is that you are still paying 75%.  To get to the price of the jacket on sale, multiply the price of the jacket by 75% (as a decimal):

290(.75) = 217.50

That's the price of the jacket when it is 25% off the original price.  If Arianna got an additional 10% off that price, that means she got 10% off but is still paying 90%.  To get to the final price that she paid, multiply the sale price of the jacket by 90% (as a decimal):

217.50(.90) = 195.75

That's what she paid in the end for the jacket (i guess not counting tax...?)

5 0
4 years ago
2x - 2y = 22 find the value of y when x equals 2
Vika [28.1K]

Answer:

y=-9

Step-by-step explanation:

If x equals 2, then we can substitute that into the equation, resulting in the equation 2*2-2y=22

We can solve for multiplication first:

4-2y=22

Then we can subtract four on both sides, canceling out the four on the left side:

-2y=18

Now to isolate y, we divide both sides by -2, resulting in the solution:

y=-9

Hope this helps!

6 0
3 years ago
Read 2 more answers
Laura goes to a Mexican restaurant for lunch she's planning to order either a chicken or beef dish if there are a choices for ch
Yuliya22 [10]
C hope that helps have a good one
8 0
4 years ago
Scientists estimate there are 70,000 species insects in each acre of the
lesya [120]

Answer:

there are 700 species in every acre

Step-by-step explanation:

divide the amount of species by the amount of acres.

7 0
3 years ago
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Suppose you have 40 meters of fencing what is the greatest rectangular area that you can enclose
Gelneren [198K]
It'd help if you could sketch this situation.  Note that the area of a rectangle is equal to the product of its width and length:  A = L W.

Consider the perimeter of this rectangular area.  It's P = 2 L + 2 W.  Note that P = 40 meters in this problem.

Thus, if we choose to use W as our independent variable, then P = 40 meters = 2 L + 2 W.  Let's express L in terms of W.  Divide both sides of the following equation by 2:  40 = 2 L + 2 W.  We get 20 = L + W.  Thus, L = 20 - w.

Then the area of the rectangle is  A = ( 20 - W)*W.

Multiply this out.  Your result will be a quadratic equation.  Graph this quadratic equation (in other words, graph the function that represents the area of the rectangle).  For which W value is the area at its maximum?  

Alternatively, find the vertex of this graph:  remember that the x- (or W-) coordinate  of the vertex is given by

W = -b/(2a), where a is the coefficient of W^2 an b is the coefficient of W in your quadratic equation.

Finally, substitute this value of W into your quadratic equation, to calculate the maximum area.
8 0
4 years ago
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