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
Annette [7]
3 years ago
7

Evaluate the expression

Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

Answer:

2r^{2} s -  {r}^{3} s \: for \: r = 3 \: and \: s =  - 2 \\  \\ (2 \times  {3}^{2}  \times ( - 2) )-  ({3}^{3}  \times ( - 2) ) = \\  \\( 2 \times 9 \times ( - 2) )-( 27  \times ( - 2) )= \ \ \\  (18 \times ( - 2)) - (27 \times ( - 2)) =  \\  - 36 \:  -  \: ( - 54) =  \\  - 36 + 54 = 18

You might be interested in
Please answer this question
erastovalidia [21]

Answer:

(4+1) x (12 x 7)

420

The only way to get this answer is to use trial and error

8 0
4 years ago
Read 2 more answers
1/2x+3=-1<br><br><br><br><br> solve for x
3241004551 [841]

=−8 lllllllllllllllll

3 0
3 years ago
Read 2 more answers
Find the sum of these polynomials<br> (x^8-x+7)+(9x^8+6)=
DerKrebs [107]
<span><span><span><span>I think is this 9<span>x8</span></span>+<span>x7</span></span>−x</span>+<span>13</span></span>
8 0
3 years ago
Karley is an architect building the city pool. The larger rectangle represents the entire pool area. The smaller rectangle repre
Ahat [919]

Answer:

Area of the walkway border is 736 ft²

Step-by-step explanation:

A rectangle is a quadrilateral (has four sides and four angles) with two pairs of opposite and parallel sides. All angles in a rectangle are 90 degrees each. Also, opposite sides are equal.

The entire pool area has a length of 60 feet and width of 40 feet. The area of the entire pool area is:

Area of entire pool = length * width = 60 feet * 40 feet = 2400 ft²

The area of entire pool

A walkaway border of 4 ft is made around the pool area. There is a decrease of 4 ft round the sides of the pool area.

Therefore length of pool = length of entire pool area - 4 feet border at left - 4 feet border at right  = 60 ft - 4 ft - 4 ft = 52 ft

width of pool = width of entire pool area - 4 feet border at top - 4 feet border at bottom  = 40 ft - 4 ft - 4 ft = 32 ft

Therefore the pool is 52 ft × 32 ft

Area of pool = length * width = 52 ft * 32 ft = 1664 ft²

Area of the walkway border = Entire pool area - Area of pool = 2400 ft² - 1664 ft² = 736 ft²

8 0
3 years ago
5p−m=10 answer my question
nasty-shy [4]

Answer:

m = -10 + 5p

Step-by-step explanation:

5p − m = 10

subtract 5p from both sides:

5p − m - 5p = 10 - 5p

simplifiy:

-m = 10 - 5p

divide -1 to both sides

m = -10 + 5p

m = -10 + 5p

===========

7 0
3 years ago
Read 2 more answers
Other questions:
  • Please help ASAP i give brainliests! I realllly need help!
    8·1 answer
  • Help please...........
    8·1 answer
  • Two cars are traveling at 40 and 50 miles per hour, respectively. If the second cars out 5 miles behind the first car. How long
    15·1 answer
  • Oscar is 16 years old and his sister Julia is 12 years old. What will be the rato of Oscars age to Julia's age in 2 years? Write
    6·2 answers
  • Find two consecutive even integers whose sum is 22
    10·1 answer
  • Eloise had 13.5 feet of ribbon. She cut the ribbon into pieces that were each 0.75 feet long.
    11·2 answers
  • I REALLY WANT TO PLAY UNDERTALE PLS HELP. Ps I pasted the must show work you have to use a strategy no normal ones 10 PTS MARK B
    10·2 answers
  • How do we say the expression in words?<br><br><br> can somebody help me pls rn
    14·1 answer
  • A line with a negative slope is perpendicular to one of the lines shown. What is its slope? Use the graph shown below. The Slope
    5·1 answer
  • A frame for a collage of pictures is in the shape of a trapezoid. The two bases are 15 inches and 20 inches. The height of the t
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!