1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nydimaria [60]
3 years ago
7

I NEED URGENT ASSISTANCE

Mathematics
1 answer:
Nata [24]3 years ago
7 0

Answer:

<em>8 C sometimes</em>

<em>9 64x^8 y^11</em>

<em>10 c 1.28r^2/ t^9</em>

Step-by-step explanation:

<u>Algebraic Operations </u>

Some basic rules must be fresh in our minds when trying to simplify complex algebraic expressions. For example, the power rule respect to the product or quotient:

\displaystyle \left(\frac{x^n.y^m}{z^p}\right)^q= \frac{x^{qn}.y^{qm}}{z^{qp}}

\displaystyle \frac{x^n.x^q}{x^p}= x^{n+q-p}

\displaystyle x^{-n}=\frac{1}{x^n}

Let's face the questions at hand

8. A number is raised to a negative exponent is negative?

Following the expressions recalled above, let's pick the expression

\displaystyle 3^{-2}=\frac{1}{3^2}=\frac{1}{9}

This is a negative power resulting in a positive number

Now we pick

\displaystyle (-2)^{-3}=\frac{1}{(-2)^3}=-\frac{1}{8}

This time, the negative power leads to a negative result, so it doesn't matter the sign of exponent to determine the sign of the result

<em>Answer: C sometimes </em>

9 simplify(4xy^2)^3(xy)^5

(4xy^2)^3(xy)^5=4^3x^3(y^2)^3x^5y^5

=64x^3y^6x^5y^5

=64x^8y^{11}

10 simplify(2t^-3)^3(0.4r)^2

(2t^{-3})^3(0.4r)^2=2^3(t^{-3})^30.4^2r^2

=8t^{-9} 0.16 r^2

=1.28t^{-9} r^2

\displaystyle \frac{1.28 r^2}{t^9}

You might be interested in
Which of the following is NOT a Pythagorean triplet?
maxonik [38]
I believe the answer is A. 20, 30, 40 is NOT a pythagorean triple.
4 0
2 years ago
What is -0.18 as a fraction in simplest form.
Radda [10]
The answer is, 9/50
0.18 = 0.18/1
0.18/1 x 100/100 = 18/100
18/100 divided by 2/2 = 9/50
In conclusion the answer is 9/50.
Hopefully that helped! :)
3 0
3 years ago
Is 5 1/2 yds greater than 192 ins?
iren2701 [21]

Answer:

no

Step-by-step explanation:

there is 12 inches in a foot

there are 3 feet in a yard

3 x 12 = 36 in in a yard

36 x 5 1/2 is 198

198 is greater than 192

6 0
3 years ago
Correct answer gets brainlest
murzikaleks [220]

Answer: She needs to score at least a 98 on the sixth quiz to raise her average to at least 88.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Express .0000257 in scientific notation
sukhopar [10]

Answer:

2.57 x 10^(-5)

Step-by-step explanation:

you have to move the comma sign in front of the first number considering 0 as a non-number.

6 0
3 years ago
Other questions:
  • Which value of x is in the solution set of the following inequalities -3x+5&gt;17
    6·1 answer
  • The coordinate pairs (-5, -11), (0, -1), and (5, 9) are solutions to which function?
    11·1 answer
  • What is −2√20−√125 in simplest radical form
    9·1 answer
  • 16% of what number is 2?
    12·2 answers
  • two groups of friends are sharing apples of the same size. The first group of 3 friends share 4 apples. The second group of 4 fr
    7·1 answer
  • Find a parametrization of the ellipse centered at the origin in the xy-plane that has major diameter 12 along the x-axis, minor
    14·1 answer
  • Plz HELP!!
    9·1 answer
  • ASAP <br><br>options: <br>left<br>right<br>up <br> down​
    5·1 answer
  • 2x - 5 = 23(19) - 56 4x2 + 2(14) = 102/2
    8·1 answer
  • 1. Write a formula for the price p of a gallon of gas in !
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!