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marissa [1.9K]
3 years ago
11

A food makes a 10-lb mixture of peanuts, almonds and raisins. The cost of peanuts is $1.50 per pound, almonds cost $2.00 per pou

nd, and raisins cost $1.50 per pound. The mixture calls for twice as many peanuts as almonds. The total cost of the mixture is $16.00. How much of each ingredient did the store use?
Mathematics
1 answer:
polet [3.4K]3 years ago
3 0

POOPY HEAD ATE THE PEANUTS

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I only know the substitutional method so I am going to give you the answers.

1. (remember I am only using the substitutional method, I am doing the method wrong...)

x + y = 10, 3x - y = 2, 5(3x-y) = 5(2), 15x - 5y = 10, 15x -5y = x + y, 14x = 6y, x = 3/7 y , 3/7 y + y = 10, 10/7y = 10, 10 y = 70, y = 7, 14x = 42. x =3

y = 7, x = 3

2. What I know:

x + y = 6

x + 2x = 6

3x = 6

x = 2, y =4

3. I am using a video to help me remember.

x = 2y + 3     2x + 3y = -3.

-3 = 2y - x     -3 = 3y + 2x

0 = - y + 3x,     y = 3x

x = 2(3x) + 3,   x = 6x + 3

-5x = 3,            x = -3/5

y = 3(-3/5)

y = -9/5, x = -3/5

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3 years ago
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kvasek [131]

Answer:

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Step-by-step explanation:

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3 years ago
Which is the maximum value of the function y=-3x2 - 15x+9?
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Answer:

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Step-by-step explanation:

The maximum value of the function is the y- coordinate of the vertex.

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

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x_{vertex} = - \frac{b}{2a}

y = - 3x² - 15x + 9 ← is in standard form

with a = - 3 and b = - 15, thus

x_{vertex} = - \frac{-15}{-6} = - 2.5

Substitute x = - 2.5 into the equation for y- coordinate of vertex

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Answer:

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Step-by-step explanation:

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Answer: Lol

B (-8,-5)

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Step-by-step explanation:

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