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MissTica
3 years ago
14

Examine Tamika’s work below. What is Tamika’s error?

Mathematics
2 answers:
Over [174]3 years ago
5 0

Answer:

(A)

Step-by-step explanation:

Tamika's work is wrong as:

The given equation is:

\frac{18a^{-5}b^{-6}}{30a^3b^{-5}}

She added the components, while the components must be subtracted in this equation, thus the equation becomes

=\frac{3a^{-5}a^{-3}b^{-6}b^5}{5}

=\frac{3a^{-8}b^{-1}}{5}

=\frac{3}{5a^8b}

which is the required simplified form.

Thus, the option A is correct.

Bogdan [553]3 years ago
4 0
The answer would be A. adding the exponents
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The sales tax in your city is 8.8%, point, 8, percent, and an item costs $63$, before tax.
PIT_PIT [208]

You would pay $5.54 on that item.

Step-by-step explanation:

Given,

Cost of item = $63

Sales tax rate = 8.8%

Amount of sales tax = 8.8% of cost of item

Amount of sales tax = \frac{8.8}{100}*63

Amount of sales tax = \frac{554.4}{100}

Amount of sales tax = $5.54

You would pay $5.54 on that item.

Keywords: percentage, division

Learn more about percentages at:

  • brainly.com/question/1836777
  • brainly.com/question/2115122

#LearnwithBrainly

8 0
4 years ago
The base of a triangle is represented by (2x − 6) and the height by (x − 2). Which polynomial expression BEST represents the are
BabaBlast [244]
Area of a triangle= \frac{1}{2} *base*height
A=\frac{1}{2} *(2x-6)*(x-2)
A=\frac{1}{2} ( 2x^{2} -4x-6x+12)
A=x^{2} -2x-3x+6
A=x^{2} -5x+6
7 0
3 years ago
Read 2 more answers
Find the length of AB.
ira [324]

Answer:

We know that in a triangle, if two angles have equal measures, then the sides opposite to them are equal in length. Thus, the length of side AB is 6 units

8 0
3 years ago
What is the probability of rolling a dice at most 3 times until a 6 occurs
IRISSAK [1]

Answer:

Probablity of getting six in at most three roll= 0.199.

Step-by-step explanation:

Given: Dice rolled at most 3 times untill a 6 occurs.

First, finding the probablity of getting 6 in a dice if rolled once.

Probablity= \frac{chances\ of\ occurance}{Total\ number\ of\ event}

We know, dice have six side, therefore, total number of event will be 6.

∴ Probablity of getting six in one roll= \frac{1}{6}

As given, Dice is rolled at most 3 times.

Now, finding the probablity of getting 6 in a dice if rolled 3 times.

∴ Probablity of getting six in three roll= \frac{1}{6}+(\frac{1}{6})^{2} +(\frac{1}{6})^{3}

⇒ Probablity of getting six in three roll=  \frac{1}{6}+\frac{1}{36} +\frac{1}{216}

Taking LCD 216

⇒Probablity of getting six in three roll= \frac{1\times 36+ 6\times 1+1}{216}

⇒Probablity of getting six in three roll= \frac{43}{216}

∴Probablity of getting six in three roll=0.199

           

3 0
4 years ago
Evaluate the expression below.<br> 18 - 71.4 + 3(-1)<br> 0 1<br> 0-7<br> 0-1<br> 07
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6 0
3 years ago
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