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
Lady bird [3.3K]
3 years ago
6

Jim is showing his work in simplifying (−8.5 + 6.1) − 1.3.

Mathematics
1 answer:
dexar [7]3 years ago
8 0

9514 1404 393

Answer:

  In step 4, Jim's answer is incorrect.

Step-by-step explanation:

In step 1, Jim swaps the order of addends using the commutative property of addition.

In step 2, Jim uses the distributive property to factor -1 from the final two terms. (The associative property lets Jim move parentheses.)

  6.1 +(-8.5 -1.3) . . . associative property

  6.1 +(-1)(8.5 +1.3) . . . distributive property

In step 3, Jim has used the properties of real numbers to form the sum of two of them.

In step 4, Jim wrote an answer of 1.1, when the answer should have been -3.7. Jim's answer is incorrect.

__

The descriptive statements about steps 2 and 4 are both true.

You might be interested in
What are the fourth roots of 6+6√(3i) ?
Helen [10]

Answer:

Step-by-step explanation:

The genral form of a complex number in rectangular plane is expressed as z = x+iy

In polar coordinate, z =rcos ∅+irsin∅ where;

r is the modulus = √x²+y²

∅ is teh argument = arctan y/x

Given thr complex number z = 6+6√(3)i

r = √6²+(6√3)²

r = √36+108

r = √144

r = 12

∅ = arctan 6√3/6

∅ = arctan √3

∅ = 60°

In polar form, z = 12(cos60°+isin60°)

z = 12(cosπ/3+isinπ/3)

To get the fourth root of the equation, we will use the de moivres theorem; zⁿ = rⁿ(cosn∅+isinn∅)

z^1/4  = 12^1/4(cosπ/12+isinπ/12)

When n = 1;

z1 =  12^1/4(cosπ/3+isinn/3)

z1 = 12^1/4cis(π/3)

when n = 2;

z2 = 12^1/4(cos2π/3+isin2π/3)

z2 = 12^1/4cis(2π/3)

when n = 3;

z2 = 12^1/4(cosπ+isinπ)

z2 = 12^1/4cis(π)

when n = 4;

z2 = 12^1/4(cos4π/3+isin4π/3)

z2 = 12^1/4cis(4π/3)

8 0
3 years ago
What is the perimeter of a lawn that is 25 feet long and 20 feet wide?
Inessa [10]

Answer:

Hey

Step-by-step explanation:

500 feet total is your answer because if you multiply the two numbers you et 500

7 0
3 years ago
Please help me with this, it’s very urgent! thank you so much!
notsponge [240]

Answer:

60 degrees.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A Venn diagram is shown below:
mina [271]
(A ∩ B) means "A intersection B". Your problem statement tells you the intersection contains
  {3, 4}
6 0
3 years ago
Read 2 more answers
Find the 17th term of the of the arithmetic sequence-5,0,5,10
Lilit [14]
An=a1+d(n-1)
first term is -5 (only way for it to make sense)
common difference is proabtly 5

an=-5+5(n-1)
17th term
an=-5+5(17-1)
an=-5+5(16)
an=-5+80
an=75
17th term is 75
8 0
3 years ago
Read 2 more answers
Other questions:
  • Fujiyama is planning a trip to the movies with his family.HE does not want to spend more than $80.He is buying 4 tickets for $15
    11·2 answers
  • Which is right for perimeter 5cm^2 or 5cm
    5·1 answer
  • The robots are powered on coffee alone. They use 2 bags of coffee each day. How long will 1/4 of a bag of coffee last them
    8·2 answers
  • Rose and Dennis each open a savings account at the same time. Rose invests $2,600 in an account yielding 4.1% simple interest, a
    8·1 answer
  • (5,2),y=2x-3 write and equation of the line that passes through the given point and is (a)parallel to and (b) perpendicular to t
    11·1 answer
  • Can the division expression 4÷15 be shown as a fraction? Why?
    15·2 answers
  • Mr. Thomas has $25. He buys 15 greeting card and 15 envelopes. Greeting card cost $1.60 each and envelopes cost $0.80 each. How
    9·1 answer
  • The current temperature of 11°F below zero is 20°F below the high temperature of the day. What is the high temperature for the d
    15·2 answers
  • -4x< 8 help please solving one step inequalities
    15·2 answers
  • laura has a toy robot collection 4/7 of her robots makes noise how many of lauras robots make noise? and can u show ur work pls
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!