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Misha Larkins [42]
3 years ago
11

Write the equation for the word problem and solve. You bought a magazine for $5 and four erasers. You spent a total of $25. How

much did each eraser cost?​
Mathematics
1 answer:
nikitadnepr [17]3 years ago
7 0

Answer: each eraser cost 5 dollors                

Step-by-step explanation: Simplifying

25 = 5 + 4e

Solving

25 = 5 + 4e

Solving for variable 'e'.

Move all terms containing e to the left, all other terms to the right.

Add '-4e' to each side of the equation.

25 + -4e = 5 + 4e + -4e

Combine like terms: 4e + -4e = 0

25 + -4e = 5 + 0

25 + -4e = 5

Add '-25' to each side of the equation.

25 + -25 + -4e = 5 + -25

Combine like terms: 25 + -25 = 0

0 + -4e = 5 + -25

-4e = 5 + -25

Combine like terms: 5 + -25 = -20

-4e = -20

Divide each side by '-4'.

e = 5

Simplifying

e = 5

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Step-by-step explanation:

We define two events for this case A and B. And we know the probability for each individual event given by the problem:

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p(B) = \frac{2}{3}

And we want to find the probability that A and B both occurs if A and B are independent events, who menas the following conditions:

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And replacing the info we got:

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