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Nitella [24]
3 years ago
10

Solve like this pls ————>

Mathematics
1 answer:
Westkost [7]3 years ago
3 0

Answer:

7 - 3 = 4

1 - (-12) = 13

9 + 11 = 20

7 - (-4) = 28

6 × (-3) = -18

(-8) × 9 = -72

5 + (-8) = -40

(-13) -2 = -26

(-13) + (-5) = 65

(-15) × -1 = 16

(-11) -12 = 132

(-9) × 3 = -27

14 + 8 = 22

60 ÷ (-4) = -15

(-4) + (-14) = -18

20 ÷ 5 = 4

(-12) + 8 = -96

6 + 11 = 17

(-14) × 7 = -98

(-12) - 15 = 180

12 × 13 = 156

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Answer:

10 pounds of raisins and 10 pounds of peanuts.

Step-by-step explanation:

Let c represent the pounds of chocolate covered raisins.

Let p represent the pounds of peanuts.

We know that the raisins cost $1.50 per pound and the peanuts cost $1.20 per pound.

Ameenah wants to make 20 pounds of a mixture of the raisins and peanuts that sells for 1.35 a pound. So, we can write the following expression:

1.5c+1.2p

This represents the cost given c pounds of raisins and p pounds of peanuts.

Ameenah wants to combine c and p to make them 1.35 per pound. In other words, the expression must equal:

1.5c+1.2p=1.35(c+p)

We also know that she wants to make 20 pounds. So, c plus p must total 20. Therefore:

c+p=20

We now have the system of equations:

\left\{ \begin{array}{ll} 1.5c+1.2p=1.35(c+p) \\ c+p=20\end{array}

First, since we know that c+p is 20, we can substitute that into the first equation.

Second, let's subtract p from both side for the second equation to isolate a variable. So:

c=20-p

Let's now substitute this into the first equation:

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Combine like terms:

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Subtract 30 from both sides:

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Divide both sides by -0.3. So, the amount of peanuts needed is:

p=10

10 pounds of peanuts is needed.

This means that 20-10 or 10 pounds of raisins is needed.

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