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finlep [7]
3 years ago
6

Rewrite the equation by completing the square 4x^2 +28x +49=0

Mathematics
1 answer:
Elodia [21]3 years ago
5 0

Answer:  −3.5

Step-by-step explanation:

Standard form:

4x2 + 28x + 49 = 0

Factorization:

(2x + 7)2 = 0

Answer equation: 2x + 7 = 0  ⇒ x1 = x2 = −7  over 2   = −3.5

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Sea World has 9 aquariums with small fish in them and the number of fish in each tank are shown below: 45, 10, 48, 19, 36, 25, 6
ANTONII [103]

Answer:

Range is 53

Step-by-step explanation:

<u><em>Sea World has 9 aquariums with small fish in them and the number of fish in each tank are shown below: 45, 10, 48, 19, 36, 25, 63, 14, 37 What is the range of the number of fish?</em></u>

<u><em /></u>

To find the range, we need to first know what range is, range is the difference between the highest and lowest number in a data given.

From the data given above, the highest number is 63 and the lowest numb er is 10

Range = highest number - lowest number

            = 63   -  10

            =53

Range is 53

6 0
3 years ago
Need Help Answer Please!!
stepan [7]

Answer:

The correct option is B

Step-by-step explanation:

The equation of a line in point-slope form is:

y-y1 = m(x-x1)

where m is the slope and (x1,y1) a point on the line

here m=2 and (x1,y1)=(2,3)

substitute these values into the equation.

y-3 =2(x-2)

Thus the correct opttion is B....

7 0
3 years ago
The point (−3, 1) is on the terminal side of angle Θ, in standard position. What are the values of sine, cosine, and tangent of
inn [45]
The angle is in the second quadrant  so only the sine is positive . 
Length of the hypotenuse = sqrt (-1^2 + 3^2)  = sqrt10
sine  =  1/sqrt10 =  0.3162 to 4 dec places
tangent = 1 / -3 =  -0.3333  to 4 d p's
cosine = -3/sqrt10 = -0.9487 to 4 d, p's.
8 0
3 years ago
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If you horizontally stretch the quadratic parent function, f(x) = x2, by a factor
Brilliant_brown [7]

Answer:

Step-by-step explanation:

If you horizontally stretch the quadratic parent function, f(x) = x2, by a factor

of 3, what is the equation of the new function?

A. g(x) = 1/3x2

B. g(x) = 3x2

C. g(x) = (3x)2

D. g(x) = (1/3x)2

6 0
3 years ago
What multiplication fact could you use to find a number that can be divided equally by 8 and 9
Mamont248 [21]
9 times 8 witch is 72    72 divided by 8 equals 9 and 72 divide by 9 equals 8
8 0
3 years ago
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