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Brrunno [24]
3 years ago
8

What are the real or imaginary solutions of each polynomial equation?

Mathematics
1 answer:
Semmy [17]3 years ago
6 0
1) a
2) c

#1 explanation:

x^4-20x^2=-64
x^4-20x^2+64=0
(find a number that multiplies to the last number aka 64 and adds up to b aka 20)
((x-4)(x-16))^2
x= -2,2,-4,4

same for #2 w different variable and numbers


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One positive number is three more than twice another. If their product is 629, find the numbers.
sineoko [7]

Answer:

x = 17 and y = 37

Step-by-step explanation:

Let the numbers be x and y.

y = 3 + 2x

xy = 629

substituting y in the second equation we get

x(3+2x) = 629

3x + 2x^{2} = 629

2x^{2} + 3x - 629 = 0

Solving a quadratic equation by using its formula:

x = [-3 ±√(9-4(2)(-629)] / 4

x = [-3 ± √5041] / 4

x = [-3 ± 71] / 4

x = 17 and \frac{-37}{2}

Ignore the negative number in x and just use x = 17 in the first equation we get

y = 3 + 2(17) = 37

5 0
3 years ago
Which of the following describes a simple event
Ber [7]

Answer: c. getting heads on a coin toss and rolling a 5 on a die

Step-by-step explanation:

8 0
3 years ago
Find the x-intercept and y-intercept of the liné.<br> - 6x + 5y = 21
Hunter-Best [27]

Answer:

x=-3.5 or -7/2 (same thing)

y=21/5

Step-by-step explanation:

x intercept is when y=0

y intercept is when x=0

so

x intercept is

-6x=21

x=21/-6

x=-3.5

y intercept is

5y=21

y=21/5

7 0
3 years ago
In the figure, lines ℓ and m are parallel. Describe ∠1 and ∠2.
seropon [69]

∠1 and ∠2 are equal angles as the lie on same side of transversal, are on parallel lines and are corresponding to each other

thank you

8 0
3 years ago
What is 18 8/16 rounded to the nearest whole number?
Angelina_Jolie [31]
18 8/16 = 18.5....rounded to the nearest whole number = 19
4 0
3 years ago
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