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3 years ago

Meredith solved a quadratic equation. Her work is shown below.

Mathematics

1 answer:

Damm [24]3 years ago

3 0

Answer:

Step 2

Step-by-step explanation:

Meredith made a fatal mistake or error in step 2;

Any quadratic problem will always have two solutions. Therefore since, we only have one solution here, it is wrong. The mistake was incurred in step 2;

From the given problem ;

Wrong right

2(x + 4)² = 242

(x + 4)² = 121 Step 1

x+4=11 Step 2 x + 4 = ± 11

x = 7 Step 3 x + 4 = 11 or x + 4 = -11

x = 11- 4 or x = -11 - 4

x = 7 or -15

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sammy [17]

First multiply each term by 24(the common denominator found by 8×3) to remove the fractions and make things easier.
$24(5) + 24( \frac{x - 2}{3} ) = 24( \frac{x + 3}{8} )$
This will give you,
$120 + 8(x - 2) = 3(x + 3)$
Then just continue to simplify and isolate the variable.
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$8x + 104 = 3x + 9$
$5x = - 95$
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3 years ago

Consider a parallelogram with vertices at (0, 3), (2, 0), (4, 2), and (2, 5).

goldenfox [79]

Answer:

Step-by-step explanation:

So a reflection over the x is a change in the y value.

Only point (2,0) is on the x-axis, so it will not move.

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2 years ago

Help to answer this question?

rosijanka [135]

Answer:

No, Victoria doesn't have enough. She doesn't have enough because 15% off of 139.99 is 118.99. But then their is a 7% sales tax. So once you add the sales tax you get $127.32 and her max is $125.

Step-by-step explanation:

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3 years ago

Write the standard form of the equation of each line. 1. y= -2/5x+1 2. y+3 = -3/2(x+1)

gavmur [86]

Answer:

1. 2x + 5y = 5

2. 3x + 2y = -9

Step-by-step explanation:

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2 years ago

Read 2 more answers