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olasank [31]
3 years ago
8

A dot plot is shown

Mathematics
1 answer:
Lerok [7]3 years ago
5 0
It’s on photomath u should def try that it works too!
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HELP!!!! I think its C but I'm not sure!
MA_775_DIABLO [31]

Answer:

The fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. The roots are x=1\pm i\sqrt{7}.

Step-by-step explanation:

Consider the provided information.

Algebra's fundamental theorem states that: Every polynomial equation of degree n with complex coefficients has n roots in the complex numbers.

Now consider the provided equation.

2x^2-4x+16=0

The degree of the polynomial equation is 2, therefore according to Algebra's fundamental theorem the equation have two complex roots.

Now find the root of the equation.

For the quadratic equation of the form ax^2+bx+c=0 the solutions are: x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Substitute a=2,\:b=-4,\:\ and \ c=16 in above formula.

x_{1,\:2}=\frac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:2\cdot \:16}}{2\cdot \:2}

x_{1,\:2}=\frac{4\pm \sqrt{16-128}}{4}

x_{1,\:2}=\frac{4\pm \sqrt{-112}}{4}

x_{1,\:2}=\frac{4\pm 4i\sqrt{7}}{4}

x_{1,\:2}=1\pm i\sqrt{7}

Hence, the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. The roots are x=1\pm i\sqrt{7}.

4 0
3 years ago
Solve equation 7x+5y= 15 for y
alina1380 [7]
Answer: 3 - 7x/5

Explanation: move all terms that don’t contain y to the right side and solve.
6 0
3 years ago
What is the vertex of y = - | x + 3 | + 5
Katyanochek1 [597]

Answer:

vertex = (- 3, 5 )

Step-by-step explanation:

The general form of the absolute value function is

y = a | x - h | + k

where (h, k) are the coordinates of the vertex

Given

y = - | x + 3 | + 5 ← in general form, then

vertex = (- 3, 5 )

7 0
3 years ago
Which is another way to check the sum of 104 + 34 + 228 + 877?
adell [148]
The answer is D. 877 + 228 + 34 + 104

4 0
3 years ago
Sarah is pouring soda into papercups. She has 4.5 liters of soda. If each papercup holds 0.25 liters, how many papercups will sh
faltersainse [42]

Answer:

18

Step-by-step explanation:

4.5 liters / .25 liters/pcup = 18 pcups

5 0
2 years ago
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