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baherus [9]
3 years ago
14

F(x) = x2 – 2x – 15 BRANARE Why is x=-3 not x=-5

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

x = 5, -3

Step-by-step explanation:

f(x) = x²-2x-15

f(x) = (x-5)(x+3)

x = 5, -3

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marissa [1.9K]
-7 2/3 is the answer good luck
3 0
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Which of these best describes the hypotenuse-angle theorem?
Amiraneli [1.4K]
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5 0
3 years ago
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A fitness center offers yoga classes for $10 per class and sells yoga mats for $19.95. Linda paid
MariettaO [177]

Answer:

12 CLASSES  10.00=120.00 PLUS 1 MAT FOR 19.95 FOR A TOTAL OF 120.00+19.95=139.95 THUS WE HAVE 12 CLASSES + 1 MAT

Step-by-step explanation:

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5 0
3 years ago
An apple grower finds that if he plants 80 trees per acre, each tree will yield 26 bushels of fruit. He estimates that for each
hammer [34]

Answer: The maximum revenue is $7482 . To get a maximum yield , The number of trees per acre needed is 43.

Step-by-step explanation:

Solution:

Let x represent the extra tree

So for an additional tree the yield of each tree will decrease by 4 bushels.

(80 +x)(26-4x) by expanding

2080 - 320x +26x -4x^2

Using x= -b/2a

X= 294/ -8

X= - 36.75

So apparently he currently has far too many trees per acre. To get the maximum yield , she needs to reduce the number of trees per acre by 36.75

So the number of trees per acre for maximum yield is

80-36.75

=43.25

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So by reducing he get extra bushel in the tune of 174.

Total revenue= 174 ×43× 1$

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3 0
3 years ago
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ratelena [41]

Answer:

2/5 is the simplest form. But in decimal form it is 0.4

Step-by-step explanation:

2/5

=2 divided by 5

=0.4

7 0
3 years ago
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