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3 years ago

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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2 years ago

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3 years ago

Read 2 more answers

You plan to take a 7-day trip to California. You estimate that it will cost $275 per day to visit Los Angeles, and $400 per day

Viktor [21]

Answer:

You can spend 4 days in Los Angeles and 3 days in San Francisco.

Step-by-step explanation:

From the information given, you can write the following equations:

x+y=7 (1)

275x+400y=2,300 (2), where:

x is the number of days to visit Los Angeles

y is the number of days to visit San Francisco

First, you can solve for x in (1):

x=7-y (3)

Now, you can replace (3) in (2):

275(7-y)+400y=2,300

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5 0

2 years ago

Debbie buys a tree for the holidays. She would like to determine the amount of space it will take up in her living room. The tre

german

Answer:

Volume of Cone =

$= \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3$

Thus, Volume = 16.75 cubic feet

Step-by-step explanation:

Volume of a cone is given by the formula

$V=\frac{1}{3}\pi r^2 h$

Where r is the radius and

h is the height

Given radius r = 2 and

height is 2 times that.

So height is 2*2 = 4

Plugging these into the formula we get:

Volume of Cone =

$= \frac{1}{3}\pi (2)^2 (4)\\\\=\frac{1}{3}(3.14)(4)(4)\\\\=\frac{1}{3}\times 3.14\times 16 \\\\=\frac{1}{3}\times50.24\\\\=16.746\\\\\approx16.75 \texttt {ft} ^3$

Thus, Volume = 16.75 cubic feet

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3 years ago