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
Angie mows lawns in her neighborhood to make money. She charges $25 per lawn and buys a new mower for $200. If x is the number o
natali 33 [55]

Answer: Angie's profit equation is 25x−200=p

Step-by-step explanation:

Let x represent the number of lawns that Angie mows in her neighborhood.

Let p represent the profit made by mowing x lawns.

Profit = Revenue - cost

She charges $25 per lawn. This means that the amount charged for x lawns = 25×x = 25x

So her revenue is 25x

She buys a new mower for $200. Thus, the cost is $200. Therefore, Angie's profit,p is expressed as

p = 25x - 200

7 0
3 years ago
QUESTION: Josephine put a frame round his picture which measured 36 cm by 34 cm. A margin 4cm wide was left all the way round. W
Mandarinka [93]
36x34= 1224cm²
(36-4)x(34-4)= 32x30= 960cm²

Area of frame= 1224
Area of picture inside frame= 960
So border = 1224-960= 264

ANSWER = 264cm²
5 0
2 years ago
Ill give brainliest,
Aleksandr [31]
The answer should be 380/0.5 =760 speed
7 0
3 years ago
HELP MEEEEEEE PLEASE
dedylja [7]
The first option and the third one
8 0
3 years ago
The equation of a line is x + 5y = 12.
Svet_ta [14]

Answer: C: 12/5

Step-by-step explanation:

y intercept is where x is 0, so set x equal to 0

0+5y=12

y=12/5

4 0
3 years ago
Other questions:
  • A quadrilateral has all sides congruent, opposite sides are parallel, and opposite angles are congruent.
    14·1 answer
  • A farmer needs to get three things to the other side of the river. A chicken, a wolf, and grain. The grain can't be with the chi
    11·1 answer
  • The points (3, 24) and (7, 56) represent points of a function where y, the number of photographs, varies directly with x, th
    8·2 answers
  • Ben buys bottles of sports drinks from the store for $2 each and takes them to his school's football games. He sells
    6·2 answers
  • What set of transformations is performed on triangle ABC to form triangle A′B′C′?
    6·1 answer
  • Multiply and simplify (x-9)(x-3)
    14·2 answers
  • Write the slope-intercept form of the equation of each line.<br> 3x − 2y = −16
    7·1 answer
  • There are 16 pieces of fruit in a basket, including 2 nectarines. What is the probability that a randomly selected piece of frui
    12·1 answer
  • What is the area of this please
    12·1 answer
  • Which expression shows 36 as a product of prime factors?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!