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Lana71 [14]
2 years ago
10

Solve for X (5x-2)^2=17 please help me everyone.

Mathematics
1 answer:
beks73 [17]2 years ago
5 0

Answer:

\frac{2}{5}±\frac{\sqrt{17}}{5}

Step-by-step explanation:

(5x-2)^2=17 \\ 5x-2=±\sqrt{17} \\ 5x = 2 ± \sqrt{17}   \\ x=\frac{2}{5}± \frac{\sqrt{17}}{5}

Don't mind the ±

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What is the value of f(3) in the function f(x)=5/6x+8
natita [175]

For this case we have a function of the form y = f (x), where f (x) = \frac {5} {6} x + 8

We must find the value of the function when x = 3, that is, we must find f (3). So:

f (3) = \frac {5} {6} (3) + 8\\f (3) = \frac {15} {6} +8\\f (3) = \frac {5} {2} +8\\f (3) = 2.5 + 8\\f (3) = 10.5

Sof (3) = 10.5

Answer:

f (3) = 10.5

3 0
3 years ago
If f(x) and g(x) are polynomial functions, what is the domain of f(x) + g(x) ?
IRINA_888 [86]

Answer:

all real numbers or (-\infty, \infty)

Step-by-step explanation:

since both f(x) and g(x) are polynomials, neither of them have restrictions on their domains. Since they can be defined for all real numbers. It's not like the square root which has a domain of (0, infinity), or log x which is defined only from (0, infinity). So adding these two polynomials would result in a domain of all real numbers.

7 0
1 year ago
(m + n^2)(m^2 - mn^2 + n^4) = find the product of the expression.Show your work.
hram777 [196]
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3 0
3 years ago
Please help I'll give the brainiest to the right answer!
Anna [14]

Answer:

x=1

Step-by-step explanation:

Because vertical angles are always equal, we want to solve 50x+10=70x-10.

We can add 10 to both sides to get 50x+20=70x.

We can subtract 50x from both sides to get 20=20x.

Lastly, we divide both sides by 20 to get 1=x.

So, \boxed{x=1} and we're done!

The check is left as an exercise to the reader.

6 0
2 years ago
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If x = -1, what is the value of y in the equation?y = 8x3 + 12x2 - 6x - 3
Bezzdna [24]
<h3>Answer:   y = 7</h3>

Work Shown:

y = 8x^3 + 12x^2 - 6x - 3\\\\y = 8(-1)^3 + 12(-1)^2 - 6(-1) - 3\\\\y = 8(-1) + 12(1) - 6(-1) - 3\\\\y = -8 + 12 + 6 - 3\\\\y = 7\\\\

Explanation:

I replaced every x with -1. Then used the order of operations (PEMDAS) to simplify. Keep in mind that (-1)^2 = (-1)*(-1) = 1 and not (-1)^2 = -1

4 0
2 years ago
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