(b) Graph the equations in the system.
(c) Use your graph to estimate how much each item cost.
Answer: 1 drink refill is $0.95 and the egg breakfast is $6.50
2 r + b = 8.40
3 r + b = 9.35
$9.35-$8.40 =$0.95 then take .95x2 to get 1.90 and 8.40-1.90 to get the egg breakfast or $6.50
what is the solution?
Answer:
x = 2/log(3) is the solution
x = 8
x = 10
x = 11
The solution to the given algebraic expression (x - 2)(x + 10) = 13 is x = 3
An algebraic equation is the combination of variables and their coefficients(usually numbers) with arithmetic operations. The main purpose of an algebraic expression is to determine the value(s) of the variable(s).
From the given information:
(x - 2)(x + 10) = 13
x² + 10x - 2x - 20 = 13
x² + 8x -20 -13
x² + 8x - 33 = 0 (quadratic equation)
Using the quadratic formula, the values of x are - 11 and 3. Since we are considering only the positive integer only, x = 3
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Answer: X=3
Step-by-step explanation:
1. expand the equation
x^2 + 10x -2x -20 = 13
2. Collect like terms
x^2 + 8x - 20 = 13
3. Simplify
x^2 + 8x = 13 + 20
x^2 + 8x = 33
x^2 = 33 - 8x
4. Substitute answers for guess and check
3^2 = 33 - (8 x 3)
9 = 33 - 24
This equation is correct therefore x = 3
Answer:
3125
Step-by-step explanation:
5^5
= 5*5*5*5*5
= 25*5*5*5
=125*5*5
=625*5
=3125
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Answer:
5^5=3125
Step-by-step explanation: