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andreev551 [17]
3 years ago
6

Step by step how to solve 4x+2=5(x+10)​

Mathematics
1 answer:
Shalnov [3]3 years ago
8 0

Answer:

x = -48

Step-by-step explanation:

4x + 2 = 5(x + 10)

expand the 5(x+10)

4x + 2 = 5x + 50

-2 both sides

4x + 2 - 2 = 5x + 50 - 2

simplify

4x = 5x + 48

-5x both sides

4x - 5x = 5x + 48 - 5x

simplify

-x = 48

÷ (-1) both sides

-x ÷ (-1) = 48 ÷ (-1)

simplify

x = -48

The answer is x = -48.

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Use synthetic division to determine whether the number k is an upper or lower bound (as specified for the real zeros of the func
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Solution:

The given Polynomial is :

f(x) = 5x^4 + 4x^3 - 2x^2 + 2x + 4=5( x^4 + \frac{4}{5}x^3 - \frac{2}{5}x^2 + \frac{2}{5}x + \frac{4}{5})

By Rational Root theorem the  of Zeroes of the Polynopmial are:

\pm\frac{1}{5},\pm\frac{2}{5},\pm\frac{4}{5},\pm1,\pm2,\pm4

But , f(\pm\frac{1}{5},\pm\frac{2}{5},\pm\frac{4}{5},\pm1,\pm2,\pm4)\neq 0

So, no root of this polynomial is real.

Therefore, All the four roots of Polynomial are imaginary.

So, we can't say whether the number k=2, is an upper or lower bound of the polynomial f(x) = 5x^4 + 4x^3 - 2x^2 + 2x + 4=5( x^4 + \frac{4}{5}x^3 - \frac{2}{5}x^2 + \frac{2}{5}x + \frac{4}{5}).

8 0
3 years ago
Read 2 more answers
Justify Step 4 of this Proof
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Answer:

I believe it's SSS

Step-by-step explanation:

This is because all sides are congruent to each other.

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2 years ago
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What is the distance between the points (-4,0) and (-7, -14) ?​
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Answer:

Step-by-step explanation:

(-4,0) ; (-7, -14)

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An accessories store sells $8 custom socks and $11 custom hats. If 11 items were sold on Monday, and the
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Answer:

7 socks were sold

Step-by-step explanation:

7*8=56

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Which choice below represents the correct domain for an exponential growth or decay function?
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D. {x | x E R} because its all real numbers
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