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Romashka [77]
3 years ago
9

Solve the quadratic equation below by completing the square. What are the

Mathematics
1 answer:
katrin2010 [14]3 years ago
5 0
I think it’s c I hope it help
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Evaluate the expression (x^2-2x)(3x^2+4x-7)
Troyanec [42]

Answer: 3x^4-2x^3- 15x^2+14x

Step-by-step explanation:

You should just multiply the two values together.

7 0
3 years ago
Solve the equation for all values of x: (x+1)^2=-49
Kazeer [188]

Answer:

Values for x = -1 + 7i  and -1 - 7i

Step-by-step explanation:

we have an equation,

(x+1)^2 = -49

We need to solve this equation for all values of x:

(x+1)^2 = - 49

Taking square root both sides

√((x +1)^2) = √-49

x + 1 = ± 7i

Subtract both sides by 1

x = -1 ± 7i

Hence we get two values for x = -1 + 7i  and -1 - 7i

6 0
4 years ago
The width of a rectangle is 12 units. Can the perimeter P of the rectangle be 60 units when its length x is 18 units?
andrezito [222]

No, the rectangle cannot have x = 60 and y = 18 because x + y is less than 60

No, the rectangle cannot have x = 60 and y = 18 because x + y is less than 24

Yes, the rectangle can have x = 60 and y = 18 because x = 12 + 2y

Yes, the rectangle can have x = 60 and y = 18 because x = 24 + 2y

4 0
4 years ago
Read 2 more answers
I need help on these thanks
olga nikolaevna [1]

Answer:

  • See below

Step-by-step explanation:

<h3>#1</h3>

Line passes through the origin and has same x and y coordinate pairs,

<u>The line is:</u>

  • y = x
<h3>#2</h3>

<u>Points:</u>

  • (0, 3), (6, 1)

<u>The slope is:</u>

  • m = (1 - 3)/6 = -2/6 = -1/3

<u>The line is:</u>

  • y = -1/3x + 3
<h3>#3</h3>

<u>Points:</u>

  • (-1, 5), (0,1)

<u>The slope:</u>

  • m = (1 - 5)/(0 + 1) = - 4

<u>The line is:</u>

  • y = -4x + 1
7 0
3 years ago
Brianna is slow cooking a honey ham. After some time, she checks its internal temperature with a cooking thermometer. The thermo
Natalija [7]
136 °Fahrenheit
=
57.7778 °Celsius

If you rounded it, it would be 58 °Celsius.
4 0
3 years ago
Read 2 more answers
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