answer.
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
anastassius [24]
2 years ago
9

Allen is showing his work in simplifying –8.3 + 9.2 – 4.4 + 3.7. Identify and explain any errors in his work or in his reasoning

. Write feedback to Allen explaining the mistake he made and how to correct his work.
StepWorkReason
−8.3 + 9.2 − 4.4 + 3.7 Original problem
1−8.3 + 9.2 + 4.4 + 3.7 Additive inverse
2−8.3 + 4.4 + 9.2 + 3.7 Commutative property
3−8.3 + (4.4 + 9.2 + 3.7)Associative property
4−8.3 + 17.3 Simplify
5 9 Simplify
Mathematics
2 answers:
snow_tiger [21]2 years ago
5 0

Answer:

Option (1)

Step-by-step explanation:

-8.3+9.2-4.4+3.7 john has used his first step as -8.3+9.2+4.4+3.7.

He has use additive inverse as their is no information is given about the additive inverse -4.4 can not be converted +4.4 .this is his incorrect step.

So, the correct steps are

-8.3+9.2-4.4+3.7

= (-8.3-4.4)+(9.2+3.7)

= -12.7+12.9

= 0.2

Hence, there is need to change the step  !.

Hence, the correct answer is 1.

skelet666 [1.2K]2 years ago
4 0

Additive inverse; you can't just take -4.4 and make it positive.

You might be interested in
Which story represents the equation six sevenths times one fourth?
Vesnalui [34]

Answer:  (C) Victoria has six sevenths of a pizza. She ate one fourth of it for dinner. How much pizza did Victoria eat for dinner?

Step-by-step explanation: One clue is "of" in the story and which matches "times" in the equation sentence. The question is is about multiplication.

Words such as "more" "and" & "total" are usually clues that the question is about addition. "Give" "take" "difference" & "have/are left" are clues that there is subtraction in the process.

8 0
2 years ago
Read 2 more answers
The scatterplot and trend line show a positive correlation between advertising costs and sales. The slope was found using the po
andrey2020 [161]
When x = 6.4, y=117, therefore
15*6.4 + b = 117
b = 117 -  96 = 21

Confirm this value by checking (6.6, 120).
15*6.6 + 21 = 120 (Correct)

Answer: b = 21
6 0
2 years ago
Read 2 more answers
△XYZ was reflected over a vertical line, then dilated by a scale factor of , resulting in △X'Y'Z'. Which must be true of the two
Igoryamba

Answer:

correct option is △XYZ ~ △X'Y'Z'.

Step-by-step explanation:

since ΔXYZ is dilated by some scale factor so, the resulting triangle can not be congruent to the ΔXYZ. so option 2 is wrong.

as we have explained that the two triangles are not congruent then it's sides and angles also can't be congruent so, option 3 is also incorrect.

As we don't know by what factor the triangle XYZ is dilated so we can't say anything about correctness of option 4 and 5.

ΔXYZ  was reflected over a vertical line and then dilated so the resulting ΔX'Y'Z' is similar to ΔXYZ.

i.e., △XYZ ~ △X'Y'Z'.

5 0
2 years ago
Read 2 more answers
Joseph’s lunch at a restaurant costs $13.00, without tac. He leaves the waiter a tip of 17% of the cost of the lunch, without ta
KonstantinChe [14]
The answer is D

17% of 13 is 2.21

13 + 2.21 = 15.21
3 0
2 years ago
Read 2 more answers
he ratio table below describes the relationship between grapes and blueberries in a fruit salad. Fruit Salad Grapes (cups) Blueb
scoray [572]
The first thing you should do for this case is to graph the data you have in the statement to see the relationship between grapes and blueberries.
 The function represented by the table is
 y = 0.25x
 Then, as Mandie is making 15 glasses of fruit salad, we have:
 y + x = 15
 We have two equations and two unknowns that we must solve.
 y = 0.25x
 y + x = 15
 Resolving
 For x: 
 0.25x + x = 15
 1.25x = 15
 x = 15 / 1.25 = 12
 For y: 
 y = 0.25x = 0.25 (12) = 3
 Answer
 The ratio of grapes to blueberries she should use is 12: 3
3 0
2 years ago
Read 2 more answers
Other questions:
  • Trevor’s total employment compensation is $33,500. If Trevor has no job expenses and his gross pay is $28,600, then his total em
    5·2 answers
  • A fuel oil tank is an upright cylinder, buried so that its circular top 12 feet beneath ground level. The tank has a radius of 6
    7·1 answer
  • The number of cases of a new disease can be modeled by the quadratic regression equation y = –2x2 + 36x + 6, where x represents
    12·1 answer
  • 1. Maryann is tracking the change in her vertical jump over 6 months. Use the table to write a linear function that models her j
    14·1 answer
  • Carolyn has $2.55 in her purse in nickels and dimes. The number of nickels is nine less than three times the number of dimes. Fi
    8·1 answer
  • In a theater there are 12 chairs in the first row, each row has 2 more chairs than the previous row, and there are 10 rows. How
    12·1 answer
  • what is " the perimeter of a triangle is between 10 and 15 inclusively. if two of the sides of the triangle are 3.7 and 5.2, fin
    5·1 answer
  • Abbey gets paid a flat rate of $10.00 to mow her neighbor's lawn plus an additional $5 per hour to rake the leaves.
    7·1 answer
  • Major arc CBD measures 300°Which is the radian measure of its corresponding central angle?
    8·2 answers
  • Consider the following regression model: Humidity = β0 + β1Temperature + β2Spring + β3Summer + β4Fall + β5Rain + ε, where the du
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!