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Elena L [17]
3 years ago
9

Anja simplified the expression StartFraction 10 x Superscript negative 5 Baseline Over Negative 5 x Superscript 10 Baseline EndF

raction to StartFraction 15 Over x Superscript 15 Baseline EndFraction. What mistake did Anja make?
Mathematics
2 answers:
katovenus [111]3 years ago
7 0

Answer:

She subtracted the coefficients instead of dividing them

Step-by-step explanation:

nikdorinn [45]3 years ago
3 0

Answer:

<h2>Anja's mistakes is solving coefficients, she must divide.</h2>

Step-by-step explanation:

The given expression is

\frac{10x^{-5} }{-5x^{10} }

Anja simplfied to

\frac{15}{x^{15} }

Anja did well powers, however, she did wrong coefficients, instead of dividing them, she subtracted them as she did with powers.

Therefore, Anja's mistakes is solving coefficients, she must divide.

\frac{10x^{-5} }{-5x^{10} }=-\frac{2}{x^{15} }

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tankabanditka [31]

Ok I will help you. This middle school?

5 0
3 years ago
What is the period of the function?<br><br> 1.π<br> 2.2π<br> 3. 3π<br> 4. 4π
lbvjy [14]

Answer:

2pi

Step-by-step explanation:

As x begins at zero and ends at 2pi, the graph repeats itself.  Thus, the period is 2pi.

3 0
3 years ago
How do you solve (7^-1)^-1 and 5^2 * 5^4 * 5^-3
Katyanochek1 [597]

Answer:

Step-by-step explanation:

exponents raised to a - power  is an inverse function probably not the right word

       a^-b    =  1/(a^b)     example       4^-2   = 1/(4^2)     =  1/16

so   (7^-1)^-1  is a double inverse which is back to the original number  7

      inverted 7 twice

      (7^-1)^-1     = (1/7)^-1     =  1/(1/7)     =   7     trust me or use your calculator

since the coeffients are the same  just add the powers...  some exponent rule

     5^2 * 5^4 * 5^-3   = 5^(2+4-3)   = 5³

here is it written out

5^2 * 5^4 * 5^-3    = 5²  ×   5^4   ×  5^-3    =   (5×5) × (5×5×5×5)  × (1/5×1/5×1/5)

    5×5 × 5× (5×5×5  × 1/5×1/5×1/5)           (5×5×5  × 1/5×1/5×1/5)  = 1

    5×5×5    = 5³

   so

7 0
3 years ago
4x − 5 = −17 what is x
Alina [70]

Answer:

<h2>x = 3</h2>

Step-by-step explanation:

<h3>4x − 5 = −17</h3>

<u>Add 5 to both sides of the equation</u>

That's

<h3>4x + 5 - 5  =  - 17 + 5 \\ 4x =  - 12</h3>

<u>Divide both sides by 4</u>

<h3>\frac{4x}{4}   =   - \frac{12}{4}  \\</h3>

We have the final answer as

<h3>x = 3 \\</h3>

Hope this helps you

3 0
3 years ago
4(15y x 2 + x)<br> y = 9<br> x = 3y<br><br> PLS HELP
erastovalidia [21]

Answer: 1118

Step-by-step explanation:

plug in x and y into the equation

3 0
2 years ago
Read 2 more answers
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