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2 years ago

Which expression is equivalent to 30 + 8?

Mathematics

1 answer:

brilliants [131]2 years ago

7 0

Answer:

Step-by-step explanation:

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Which shows the following expression using positive exponents?

Hitman42 [59]

Answer:

1. option B is correct i.e., $\frac{-3a^{7}b^3b^1}{15a^{2}}$

2. option D is correct i.e., $\frac{a^3b^4}{ab^2}$ .

3. option B is correct i.e., $\frac{n^{10}}{16m^{6}}$ .

Step-by-step explanation:

1. Since the given equation is:

$\frac{-3a^{-2}b^3}{15a^{-7}b^{-1}}$

As we know that $a^{-x}=\frac{1}{a^x}$

So, the given equation can be represented as:

$\frac{-3a^{7}b^3b^1}{15a^{2}}$

2. Given equation is:

$\frac{a^3b^{-2}}{ab^{-4}}$

As we know that $a^{-x}=\frac{1}{a^x}$

so the given equation can be represented as:

$\frac{a^3b^4}{ab^2}$ .

3. Given equation is:

$(\frac{4mn}{m^{-2}n^6})^{-2}$

by using the properties $a^{-x}=\frac{1}{a^x}$ ,

and $a^x\times a^y=a^{x+y}$

$(\frac{4mn}{m^{-2}n^6})^{-2}$

= $(\frac{4n^1n^{-6}}{m^{-2}m^{-1}})^{-2}$

= $(\frac{4n^{1+(-6)}}{m^{-2+(-1)}})^{-2}$

= $(\frac{4n^{-5}}{m^{-3}})^{-2}$

= $\frac{4^{-2}n^{-5\times (-2)}}{m^{-3\times (-2)}}$

= $\frac{n^{10}}{16m^{6}}$ .

which is option B.

5 0

3 years ago

Read 2 more answers

leila saw that the dress was marked down 30 percent during a sale. if the original price was $130 what was the sale price of the

pychu [463]

Answer:

The sale price of the dress is $91

Step-by-step explanation:

leila saw that the dress was marked down 30% during a sale. If the original price was $130.

Which means,

130 × 30 ÷ 100 = $39

So,

$130 – $39 = $91

Thus, The sale price of the dress is $91

<u>-TheUnknownScientist 72</u>

6 0

3 years ago

Read 2 more answers

Solve each system by elimination.

Lerok [7]

X=6/3=2 is the answer

3 0

3 years ago

Read 2 more answers

Pls help me with this‼️

mixas84 [53]

Answer:

Step-by-step explanation:

for D I draw it out and it didn’t make sense

6 0

3 years ago

Show the work please and thanks

sineoko [7]

Answer:40( fourty) is the answer

Step-by-step explanation:

4 0

3 years ago