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Archy [21]
3 years ago
6

This is due today, please help!!! I will give brainliest.

Mathematics
1 answer:
WINSTONCH [101]3 years ago
6 0

Answer:

Step 1, all the exponents are increased by 4

Step-by-step explanation:

The first incorrect step occurred in Step 1, where all the exponents were increased by 4.

This is mathematically incorrect due to exponential rules. When distributing exponents inside parentheses, we have to multiply the existing exponents inside the parentheses by the exponent outside the parentheses.

For example, (x²)³ is not x²⁺³, but rather, x⁽²⁾⁽³⁾.

We multiply the exponents instead of adding them together.

Therefore, the correct Step 1 should multiply all the variables' exponents by 4.

Steps 2 and 3 are correct since we do add the exponents when multiplying exponents with the same base, and we do subtract exponents with the same base when dividing.  

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Please Help!!!
suter [353]
So, 1/3 of something is 21.

1/3 of x is not the full x: we know that the x is 21 and even more. So, it must be bigger than 21, since it has 21 and something else (and since 21 is not negative): the solution MUST be greater than 21.
7 0
3 years ago
The difference between two positive integers is 4. If the smaller is added to the square of the larger, the sum is 68. Find the
xxMikexx [17]
<h3>Given</h3>

Two positive integers x and y

x - y = 4

x² + y = 68

<h3>Find</h3>

x and y

<h3>Solution</h3>

Add the two equations together.

... (x - y) + (x² + y) = (4) + (68)

... x² + x = 72

Rearrange to standard form and factor.

... x² + x - 72 = 0

... (x + 9)(x - 8) = 0

Use the zero product rule to find the solutions. That rule says the product is zero when one or more factors is zero.

... x + 9 = 0 ⇒ x = -9

... x - 8 = 0 ⇒ x = 8 . . . . . . the positive solution

Then we can find y from

... 8 - y = 4

... y = 4 . . . . . . . add y-4 to the equation

The two positive integers are 8 and 4.

4 0
3 years ago
Solve for X. I can't seem to figure out how to isolate the X. The answers of course are X = 0,2 but I need to know the process.
marin [14]
There is no algebraic way of isolating X unfortunately. 
For these equations, you have to solve with numerical approximation.
I suggest Newtons method if you know calculus.
7 0
3 years ago
Which is not a representation of the equation y = 0.5x - 2?
Studentka2010 [4]

Answer:

D is incorrect so ur answer is D

8 0
2 years ago
A bicycle wheel has a radius of 13 inches.
Dovator [93]
The distance traveled in  1 roation is assumed to be the circumferece

c=2pir
in 13 rotations

13 times 2pir=26pir=distance traveled for 13 revolutions

r=13
d=26pi13
d=338pi
using 3.14 for pi
d=1061.32 inches
6 0
3 years ago
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