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gulaghasi [49]
3 years ago
11

The length of a rectangle is (2x - 7)inches and the width is (x2 - 5) inches. find an expression for the perimeter of the rectan

gle.
Mathematics
1 answer:
djverab [1.8K]3 years ago
4 0
We know that

[perimeter of rectangle]=2*[length+width]
length=(2x-7)
width=(x²-5)
[perimeter of rectangle]=2*[(2x-7)+(x²-5)]----> 2*[x²+2x-12]---> 2x²+4x-24 in

the answer is
(2x²+4x-24) in
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Step-by-step explanation:

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Find the solution of this system of equations. Separate the x- and y-values with a comma. x - 2y = -23 and x - y = 7
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3 years ago
Suppose Wal-Mart stock is selling at $59 a share and Mattel stock is selling at $28 a share. Amy has a maximum of $6000 to inves
Ulleksa [173]

Answer:

88 shares of Wall-Mart stock,

a) Step-by-step explanation,  22 shares of Mattel stock. b) $192

Given:

Suppose Wall-Mart stock is selling at $59 a share and Mattel stock is selling at $28 a share.

Amy has a maximum of $6000 to invest.

She wishes to purchase four times as many shares of Wall-Mart as of Mattel.

Only whole shares of stock can be purchased.

Question asked:

a) How many shares of each will she purchase?

b) How much money will be left over?

Solution:

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Selling price of each share of  Mattel stock = $28

Let number of shares of Mattel stock purchased = x

Then, number of shares of Wall-Mart stock = 4x

Total money invested =$6000

<u>Shares of Mattel stock </u>\times<u> $28 + Shares of  Wall-Mart stock </u>\times<u> $59 = $6000</u>

28\times x+59\times4x=6000\\28x+236x=6000\\264x=6000

Dividing both sides by 264

x=22\frac{192}{264}

<em>That means, total 22 shares of Mattel stock is purchased and 192 is the money left over:-</em>

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Total amount spent on both shares = $616 + $5192 = $5808

Money left over = $6000 -  $5808 = $192

a) He will purchase 88 shares of Wall-Mart stock and 22 shares of Mattel stock.

b) Money left over is $192.

6 0
4 years ago
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