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Sauron [17]
4 years ago
11

If the area rectangle below us 39 square feet find the x value

Mathematics
1 answer:
Leya [2.2K]4 years ago
7 0

Answer:

x=5 and x=-11

Step-by-step explanation:

(x-2)(x+8)=39

x^2+6x-16=39

Subtract 39 from both sides

x^2+6x-55=0

Factor:

(x-5)(x+11)=0

Set factors to 0.

x-5 =0

x+11 =0

x=5, x=-11

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3 years ago
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Gelneren [198K]
(a)
the list would be
-20, -12, -8, -1, 1, 5, 10
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8 0
3 years ago
Coach Shaw is buying baseball equipment for his team. He gets a reduced rate if he buys 8 baseballs for every 3 batting helmets.
Natalija [7]

Answer:

Helmets-12

Baseballs-32

Step-by-step explanation:

Given the tax rate as 6% and the reduced prices as $2.25/baseball and $22.50/helmet and that the budget is $400:

The new prices are reduced price plus tax:

Baseball \ Price =2.25\times (1.06\%)=2.39\\\\Helmet \ Price= 22.50\times (1.06\%)=23.85

Let x be the number of groups of 8 baseballs as well as the number of groups of 3 helmets,therefore:

8x(2.39)+3x(23.85)=400\\\\19.12x+71.55x=400\\\\x=4.4116\\\\x\approx 4

Substitute for x=4 to find the highest number of baseballs and helmets:

Helmets=4x3=12

Baseball=4x8=32

#Price cost will be 12x23.85+32x2.39=362.68 (balance=37.32)

Hence, Shaw can buy 12 helmets and 32 baseballs and still remain with $37.32

3 0
3 years ago
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