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Tresset [83]
2 years ago
9

On August 1, Ira's bank balance was $300. During the month, he wrote checks for $450.00 and $115.25 and made one deposit of $225

.00. Which of the following best represents her checking account balance at the end of the month? A) -$490.25 B) -$65.00 C) -$40.25 D) $ 1090.25
Mathematics
1 answer:
vazorg [7]2 years ago
8 0
 A<span>t the end of the month, Ira's balance would be C) -$40.25.</span>

  His starting balance is $300. But since he withdraw $565.25 ($450.00 + $115.25) and made a $225.00 deposit, 300 - 565.25 + 225 = -40.25.

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Gerry thinks that the points (4,2) and (−1,4) form a line perpendicular to a line with slope 4. Do you agree? Why
faust18 [17]

Answer:

The answer to your question is these lines are not perpendicular.

Step-by-step explanation:

Data

A (4, 2)

B (-1, 4)

slope = m = 4

Perpendicular lines mean that these lines cross and form an angle of 90°. Also, the slope of perpendicular lines is negative reciprocals.

Process

1.- Find the slope of the second line and compare it to the slope given.

slope = \frac{y2 - y1}{x2 - x1}

Substitution

slope = \frac{4 - 2}{-1 - 4}

Simplification and result

slope = \frac{-2}{5}

-2/5 is not a negative reciprocal of 4, so these lines are not perpendicular.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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89. If x, y, and z are numbers such that xy + xz = 100, what is the value of x/5 (3y + 3z) + 10?
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Hello,

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