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2 years ago

Solve the Quadratic Equation.

Mathematics

1 answer:

vichka [17]2 years ago

7 0

Answer:

x = ± 2i

Step-by-step explanation:

The equation has no real roots, gut has complex roots

Given

x² = - 4 ( take the square root of both sides )

x = ± $\sqrt{-4}$

= ± $\sqrt{4(-1)}$

[ Note that $\sqrt{-1}$ = i ]

= ± $\sqrt{4}$ × $\sqrt{-1}$ = ± 2i

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Given mn, find the value of x.

Lesechka [4]

Answer:

x = 23

Step-by-step explanation:

You have to find where they are equal because the angle will be the same.

8x - 27 = 7x + 4

x = 23

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2 years ago

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Bezzdna [24]

Answer:

3c^2a is the GCF

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2 years ago

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One side of a triangle is half the longest side. The third side is

Illusion [34]

Answer:

The length of the sides are 9 units, 18 units and 11 units

Step-by-step explanation:

Let

x ----> one side of the triangle

y ----> the longest side of the triangle

z ----> the third side of the triangle

we know that

The perimeter of triangle is equal to

$P=x+y+z$

we have

$P=38\ units$

$38=x+y+z$ ----> equation A

$x=\frac{y}{2}$ -----> equation B

$z=y-7$ ----> equation C

substitute equation B and equation C in equation A

$38=\frac{y}{2}+y+(y-7)$

solve for y

$38=\frac{5}{2}y-7$

$\frac{5}{2}y=38+7$

$\frac{5}{2}y=45$

$y=45(2)/5$

$y=18\ units$

Find the value of x

$x=\frac{y}{2}$ ---> $x=\frac{18}{2}=9\ units$

Find the value of z

$z=y-7$ ----> $z=18-7=11\ units$

therefore

The length of the sides are 9 units, 18 units and 11 units

4 0

2 years ago

2x³+4x²-2x³+x-32 A)1 B)2 C)3 D)0

Gnoma [55]

Answer:

The degree is 2

Step-by-step explanation:

2x³ and -2x³ cancel each other out, so the expression would be 4x²+x-32.

The largest exponent value is 2, as shown in "4x²"

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2 years ago

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Circle 1 has a diameter of 18 and circle 2 has a diameter of 20.

borishaifa [10]

Answer:

D. 59.66

Step-by-step explanation:

The formula is A = $\pi r^{2}[/tex\ Also the radius is half of the diameter. and [tex]\pi$ = 3.14

so we need to find the area's

9 x 9 = 81

81 x 3.14 = 254.34

Next circle.

10 x 10 = 100

100 x 3.14 = 314

Now to find the difference.

314 - 254.34 = 59.66

59.66

Hope this helped! Please mark as brainliest! Thanks!

5 0

2 years ago