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
maks197457 [2]
3 years ago
13

Selena and Drake are evaluating the expression (StartFraction r s Superscript negative 2 Baseline Over r squared s Superscript n

egative 3 Baseline EndFraction) Superscript negative 1, when r = negative 1 and s = negative 2.
Selena’s Work
Drake’s Work

(StartFraction r s Superscript negative 2 Baseline Over r squared s Superscript negative 3 Baseline EndFraction) Superscript negative 1 Baseline = (r Superscript negative 1 Baseline s) Superscript negative 1 Baseline = StartFraction r Over s EndFraction = StartFraction negative 1 Over negative 2 EndFraction = one-half

(StartFraction (negative 1) (negative 2) Superscript negative 2 Baseline Over (negative 1) squared (negative 2) Superscript negative 3 EndFraction) Superscript negative 1 = (StartFraction (negative 1) (negative 2) cubed Over (negative 1) squared (negative 2) squared EndFraction) Superscript negative 1 = (StartFraction negative 8 Over 4 Endfraction) Superscript negative 1 Baseline = StartFraction 4 Over negative 8 EndFraction = negative one-half


Who is correct and why?
Selena is incorrect because she should have substituted the values for the variables first, and then simplifed.
Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.
Drake is incorrect because he should have simplified first, before substituting the values for the variables.
Drake is correct because he substituted the values for the variables first, and simplified correctly
Mathematics
2 answers:
NARA [144]3 years ago
8 0

Answer:

A

Step-by-step explanation:

AURORKA [14]3 years ago
8 0

Answer:

Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.

Step-by-step explanation:

You might be interested in
What is -11/10 divided by -1/4 times -40/19? Show your work
elena-14-01-66 [18.8K]
I hope this helps you!

3 0
3 years ago
De is parallel to xy. what is the value of x?
Oliga [24]
7 is the answer because de is parallel to xy.
7 0
3 years ago
List the integers that satisfy both these inequalities, 2x+9 -12
Flura [38]

Answer:

x < -10.5

Step-by-step explanation:

list the integers that satisfy both these inequalities, 2x+9 <-12

Subtract 9 from  both sides;

2x +9 - 9 < -12-9

2x < -21

x < -21/2

x < -10.5

<em>Hence all the integers are values of x less than 10.5</em>

<em></em>

4 0
3 years ago
Madison hits a tennis ball with an initial velocity of 18 m/s straight up into the air. When she hits the ball, it is 1.2 m abov
Yuri [45]
The answer is c i believe
4 0
2 years ago
Identify the graph of y=2^x+3
Mila [183]

could you show me a picture so maybe i can answer it please

7 0
3 years ago
Other questions:
  • What number must multiply each side of the equation 3/5x = 20 to produce the equivalent equation x = 20?
    12·2 answers
  • The scale of a map is 1 inch = 25 miles. How many miles does 1.25 inches represent?
    7·2 answers
  • Whats the perfect square number 5,8,36,or 44
    8·1 answer
  • What is an equation for the line that passes through points (8, -3) and (9, 10)
    6·1 answer
  • I don’t understand graphing.
    5·1 answer
  • Please help me on this will give you brainliest!!
    8·1 answer
  • Assume that you purchased a new car today and financed $55,000 of the price on a 72-month payment contract with a nominal rate o
    7·1 answer
  • -5y-9 =-(-1)<br> A.- 1/2<br> B. -2 1/2<br> C. -2<br> D. -2/5
    15·1 answer
  • PLEASE HElP
    10·1 answer
  • Is the equation a linear function or nonlinear function?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!