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erastova [34]
3 years ago
10

Using the discriminatory, determine the number of real solution 2x^2+7x-15=0

Mathematics
1 answer:
Scilla [17]3 years ago
6 0

Answer:

c. two real solutions

Step-by-step explanation:

x = -5 , x = 1.5

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An astronomy club wants to buy six new eyepieces for their telescope. Four of the lenses cost $53.98 each. Two lenses cost $21 e
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Answer:

239.92

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53.94×4=215.92

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At Gino's you pay $16 plus $8 per pizza.
At Venetian's you pay $24 plus $6 per pizza.
Let the number of pizzas be x.

At Gino's you pay 16 + 8x
At Venetian's you pay 24 + 6x

Set the two costs equal and solve for x to find out the number of pizzas for which both costs are the same.

16 + 8x = 24 + 6x
16 + 2x = 24
2x = 8
x = 4
Each place gives you a free pizza.
4 pizzas plus the free pizza equals 5 pizzas.

If you need 5 pizzas (including the free one), both parlors cost the same.

If you need fewer than 5 pizzas, use Gino's.
If you need more than 5 pizzas, use Venetian's.
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