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arsen [322]
3 years ago
12

In the equation below, what is the value of b? 4(x-2)^2-7=ax^2+bx+c

Mathematics
1 answer:
Finger [1]3 years ago
4 0
We have 4(x^2 - 2x + 4) - 7 = 4x^2 - 8x + 16 - 7 = 4x^2 - 8x + 9;
So, 4x^2 - 8x + 9 = <span>ax^2+bx+c ;
The value of b is -8.</span>
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Which of the following is equivalent to 4x+5y=12?
rosijanka [135]

Answer: Slope=−

2.000

1.600

​

=−0.800

x−intercept=

4

12

​

=3

y−intercept=

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Step-by-step explanation:

5 0
3 years ago
The length of the line segment <br><br> AB equals 3x+1<br><br> BC equals 4x-5<br><br> AC equals 8x-9
yanalaym [24]

Answer:

X = 5

Step-by-step explanation:

Here is what I am picturing (not to scale)

A ----------------B-----------C

We are given the information of AB (which equals 3x + 1), BC (which equals 4x - 5), and AC (which equals 8x - 9).

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So,

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4 0
2 years ago
Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance
Feliz [49]

Answer:

9.5

Step-by-step explanation:

Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance.

Step 1

We find the Mean of the numbers

Mean = Sum of terms/ Number of terms

Mean = 9+12+9+14+6/5

= 50/5

= 10

Step 2

We find the sample variance

Formula =

(x - Mean)²/n - 1

n = 5

= (9 - 10)²+(12 -10)²+(9- 10)²+(14-10)²+(6-10)²/5 - 1

= 1+ 4+ 1+ 16+16/5 - 1

= 38/5 - 1

= 38/4

= 9.5

Therefore, Sample variance = 9.5

3 0
2 years ago
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5 0
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DE-STRESSER
fomenos

Answer:

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
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