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pishuonlain [190]
3 years ago
15

x^2+6x+4 Which of the following is equivalent to the expression above? Justify your answer. A) (x+3)^2+5 B) (x+3)^2-5 C) (x-3)^2

+5 D) (x-3)^2-5
Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0

Answer:

B) ( x+3)² - 5

Step-by-step explanation:

Given expression

               x²+6x+4

Adding '9' and subtracting '9' of given expression

      ⇒ x² + 2 (3) (x) +(3)² -(3)² +4

(a + b)² = a² + 2 a b + b²

     ⇒ ( x+3)² - 9 +4

     ⇒ ( x+3)² -5

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Help Please...
ycow [4]

11 5/8 in = 11.625 in


9 3/4in = 9.75 in


10 1/2 in= 10.5 in


11.625+9.75+10.5= 31.875in


To find the average divide the total of inches by the amount of pieces there are to find the average:


31.875 / 3 = 10.625in

6 0
4 years ago
A ball rolls down an inclined plane such that the distance (in centimeters) that it rolls in t seconds is given by s(t) = 2t^3 +
IRISSAK [1]
The ball's velocity will be represented by the derivative of its distance function:

s'(t)=6t^2+6t

Now find the times t for which this is equal to 30, i.e. solve

6t^2+6t=30\implies t^2+t-5=0

This has two solutions, t=-\dfrac{1\pm\sqrt{21}}2, but only one is positive and falls in the interval [0,3]. So the velocity reaches 30 cm/s when t=-\dfrac{1-\sqrt{21}}2\approx1.79.
3 0
3 years ago
Mrs. Ness buys 22 oz. of bananas for $2.86. What was the cost per ounce of the bananas?
Nezavi [6.7K]

Answer:

$0.13  per oz

Step-by-step explanation:

since you have $2.86, you have to split it into 22 ounces. You divide the 2.86 and the 22oz. and get 0.13

4 0
3 years ago
What is the answer for 5-2+7x6-2?
sergiy2304 [10]

Answer: 43

Step-by-step explanation:

5-2+7x6-2

3+42-2

45-2

43

8 0
3 years ago
9 out of 25 students are home sick with the flu. What percentage of the students are home sick?
Arturiano [62]

Answer:

36%

Step-by-step explanation:

9/25


multiply each by 4 to get 36/100


as a percent it would be 36%

5 0
3 years ago
Read 2 more answers
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