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Dovator [93]
3 years ago
12

Part A: Explain in words the mistake Juanita made. Part B: Solve the equation 3x + 6 = 24

Mathematics
2 answers:
Kruka [31]3 years ago
6 0
If she was going to divide by 3 to eliminate the x term's coefficient, she needed to divide all other terms by 3 and she did not. She only divided two of the three terms by 3 and left out the 6.

3x + 6 = 24
divide all terms by 3

3x/3 + 6/3= 24/3

x + 2= 8
subtract both sides by 2

x= 6


CHECK:
3x + 6 = 24
3(6) + 6= 24
18 + 6= 24
24= 24


ANSWER: She did not divide all terms by 3 when eliminating the x term's coefficient. x= 6

Hope this helps! :)
Ksju [112]3 years ago
3 0
She didnt divide the whole problem by 3 it would be x+3=8 then the rest of the work

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A rectangle is 10 cm long and it's perimeter is 26cm . find the breath of the rectangle
gavmur [86]

Answer:

the width of a rectangular is 3 cm

Step-by-step explanation:

Length L = 10 cm

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26 - 20 = 2W

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W = 6 / 2

W = 3 cm

therefore,  the width of a rectangular is 3 cm

6 0
3 years ago
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9514 1404 393

Answer:

  no solution

Step-by-step explanation:

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4 0
3 years ago
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6 0
3 years ago
A projectile is fired straight up from ground level. After t seconds, its height above the ground is s feet, where s= - 16t² + 1
brilliants [131]

For the time period of  the projectile at least 192 feet above the ground is between 2 second and 6 second

Since s=128t-16t2, we want to know the 2 times where 128t-16t2=192, as those two values will be the begin and end times of the interval in question. We can rewrite that equation in standard quadratic equation form:

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or t2-8t+12=0

since it is now in quadratic form, we can solve using the quadratic formula:

t = 2 and 6

So the time period from approximately 2 second and 6 second has the projectile above 192 feet.

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1 year ago
What is 42286 divided by 19
Licemer1 [7]

The answer I got was 2225.57895

6 0
3 years ago
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