Tamara rewrote the expression 0.2(4+1.4y -2.1). Her steps are shown.
Step 1: 0.2(4+1.4-2.1)
Step 2: 4.2+1.6 - 1.9
Step 3: 4.2-1.9+1.6y
Step 4: 2.3+1.67
Which statement identifies and explains the first mistake Tamara made?
Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2.
Her first mistake was in Step 2. She should have only added 0.2 to 4 instead of adding 0.2 to all 3 terms.
© Her first mistake was in Step 3. When reordering the terms, the 1.6y should be negative and the 1.9 should be
positive.
Her first mistake was in Step 3. When reordering the terms, 1.9 should be the coefficient of y rather than 1.6.

Answers

Answer 1

Answer:

Step-by-step explanation:

its c

Answer 2

The statement that identifies and explains the mistake made by tamara was,

Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2.

The correct option is option A)

What is multiplication?

Multiplication is one of the basic arithmetic operation in which we take the product of two or more terms. The other basic operation is addition, subtraction and division.

We are given an expression 0.2(4+1.4y-2.1)

To compute simplify and find the value of y,

We multiply 0.2 inside we get the following,

(0.8+0.28y-0.42)

Instead of performing multiplication operation like this she added 0.2 in each and every term

This was the mistake made by her

Hence, The statement that identifies and explains the mistake made by tamara was,

Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2.

The correct option is option A)

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Related Questions

which of the following describes a way to graph the function g(x)= -2|x|

Answers

It looks like a “^” because of the negative while it starts at y = -2

Please answer this is my last assignment for the semester

Answers

Answer:

It's C

Step-by-step explanation:

Multiply the length by the width and you are going to do that by multiplying 4x by 2x and 4 and also multiply -6 by 2x and 4. and then you simplify and you should get the equation C

y = 2(x - 2)2 + 1
10
What is the
a. Vertex
b. Axls of Symmetry line: x =
c.y.Intercepts:(

Answers

Answer:

Step-by-step explanation:

Vertex

What should I write

Answers

Answer:

4x

Step-by-step explanation:

You multiply the two numbers together:

Top left, purple tile: 3x(x) = 3x^2

Top right, pink tile: 4(x) = 4x

Bottom left, yellow tile: 3x(2) = 6x

Bottom right, blue tile: 4(2) = 8

Basically u multiply the variable above it and the variable at its left

Answer:
4x

Explanation:
x + 4 = 4x

Which expression is equivalent to 8 1/2 - 9 3/4

Answers

Answer:

just divide them i think

Step-by-step explanation:

Answer:

thats not an answer?

Step-by-step explanation:

Add. Express each sum in simplest form : 5/9+1/2

Answers

Answer:

19 /18  or 1 1/18

Step-by-step explanation:

first you need to make the denominators the same

10/18+9/18

then add the numerations together to get

19/18 or 1 1/18

I hoped this helped :)

HELP!!!! Read the following story carefully, and then complete the activities that follow.

"Good-bye, Mom," Tino cried as he rushed out the door. Tino had his new fishing pole with him and was anxious to try it out.

Tino Kanaha (kan' ah hah) was a Hawaiian boy. He had just turned twelve the day before and had received the fishing pole as a gift from his father.

Tino's house was about a half mile from the cliff overlooking the leeward side of Maui. Many times Tino had climbed down to the rocks below and looked for seashells while his father fished for aku.

"Now it's my turn," thought Tino as he scurried out onto one of the rocks, "and I get to do it all by myself!"

"Aku, here I come!" yelled Tino excitedly as he cast his bait into the surf.

An hour later, Tino heard someone call his name. He looked up and saw his good friend, Kona. "Have you caught anything?" Kona yelled.

"Oh, hi, Kona," Tino said disappointedly. "Wait for me, and I'll be right up."

As Tino reeled in his line, he noticed the waves were much bigger than they had been before. "The wind is stronger, too, " thought Tino as he glanced at the darkening sky.

"We'd better hurry home," Tino said to Kona as he reached the top of the hill. The two boys ran as quickly as they could. They even took the short cut through the sugar cane field to save time.

Kona raced into his yard and, without stopping, he yelled, "Good-bye, Tino! I'll see you tomorrow!"

The first big drops of rain began to fall as Tino reached the front door of his house.

"Oh, I'm glad you're home!" Mrs. Kanaha said. "It is beginning to rain very hard!"

"The storm must be the reason the fish weren't biting," Tino said as he put his fishing pole into the rack on the porch, "but I'll try again tomorrow."



Give two details that are clues that Tino did not catch any fish.

Answers

Detail 1: In the second to last paragraph Tito states that “the storm must be the reason the fish weren’t biting” indicating that the he didn’t catch any fish

Detail 2: When Tito’s friend Mona asks “Have you caught anything ?” Tito doesn’t answer the question and only says “Oh hi Kona” which shows that he didn’t catch a fish yet
Clue #1 - “Oh, hi, Kona,” Tino said DISAPPOINTEDLY. “Wait for me, and I’ll be right up.”

Clue #2- “The storm must be the reason THE FISH WERENT BITING,” Toni said as he put his fishing pole into the rack on the porch, “but I’ll try again tomorrow.”

No bother to find or locateNope not found nope

Answers

That’s Um..ah okay then

Nineteen less than four times a number is greater than forty-seven.
Please i will give away all my points to the person that answers this in number form thanks

Answers

Answer: pretty sure it's the number you multiply by 4 is 17

Step-by-step explanation:

when you multiply 4 and 16 you'll get 64 then you subtract 19 and get 45 which is less than 47 so by reasoning if you were to multiply 4 and 17 you'll get 68 then you subtract 19 from 68 and you should get 49 ( you didn't include how much greater than 47 the number should be but the safest bet would be to use 17)

I need help help help ​

Answers

Answer:

C!!!!!

Step-by-step explanation:

because common sense

Answer:

the first option.

3 * 10  =      30

4 * 1    =         4

5 * 0.1 =         0.5

7 * 0.01 =      0.07

6 * 0.001 =   0.006

________________

                  34.576


10(8r+23) =1430
HELP PLS ITS FOR MY HW PLS PLS PLS

Answers

Answer:

r = 15

Step-by-step explanation:

10(8r + 23) = 1430

Divide both sides by 10.

8r + 23 = 143

Subtract 23 from both sides.

8r = 120

Divide both sides by 8.

r = 15

Express as a trinomial
(3x + 8)(2x + 1)

Answers

Answer:

6x^2+ 19x+8

Step-by-step explanation:

(3x+8)(2x+1) use foil method which gives you,

6x^2+16x+3x+8 then combine like terms which gives you,

6x^2+ 19x+8.

Write the equation of the line that is parallel to the original equation and passes through the point
(12, 6).

Answers

Answer:

12

Step-by-step explanation:

12 your welcomeeeeee

Plz help me I am in a test
Tell which choice, 100, 500, or 1,000, is the best estimate of the solution.
69.3x = 5,059
a.100
b. 1,000
C. 500

Answers

Answer:

c

Step-by-step explanation:

because I did this test and got the answer right

Answer:

I would say A because 5000/70 is roughly like 80 something so it's less than 100 either way, so 100 is the best guess

Step-by-step explanation:

How many 5/6 cup scoops of laundry detergent are in 2/3 of a cup of detergent

Answers

Answer:

1

Step-by-step explanation:

Gianna cuts a ribbon into equal pieces as shown below. She uses 4 pieces of the ribbon for a project. What fraction of the ribbon does Gianna use for the project? Explain how you found your answer.

Answers

1/4

ONE of the FOUR total pieces was used.

Jada cut 4 pieces of ribbon that were equal in length. She used a total of 5 feet of ribbon. How long, in feet, was each piece of ribbon she cut?

Answers

Answer:

1.25 feet

Step-by-step explanation:

5/4=1.25

Please help with this question and pls don't give me a bizarre answer that doesn't help me

Answers

Your answer is B
Edge 2020

8z - 13 = 5z + 8 The Zs are variables ​

Answers

43 is the answer for the whole equation

Identify the constant term in this expression 0.25 + 2x + 4z +0.75y
A) 2x B) 4x C 0.25 D) 0.75y​

Answers

C) 0.25 is the answer because it has the lowest degree and doesn’t have a variable

Answer:

0.25..........................................................

.

can u pls help me with this question ​

Answers

Answer:6

Step-by-step explanation:

when it at 6 dallors the hour is 1

$6 and hour hope this helped :)

5.
What is the y-intercept of the graph of y = 5x - 12?
A) (0, -12)
B) (0,5)
C) (5,0)
D) (-12, 0)

Answers

Answer:

a

Step-by-step explanation:

-12 is in the correct position, (x,y)

A plumber charges $80 for a house call and $25 per hour for his services. Which of the following is a linear model of his charges.

Answers

Answer:bals

Step-by-step explanation:25(number of hours worked) +80$ for initial charge

Answer:

25x+80

The number of hours is x for services

PLEASE ANSWER THIS ONE!!!

Answers

Answer:

6:5

Step-by-step explanation:

i think this is it as I square rooted it and go that

12. Write the equation of a line that passes through point (2,3) and is parallel
to the line 6x + 3y = 12. *

Answers

Is going to be 3/3 and I did this

Lana correctly answered 48 of 60 questions on a math exam. What percent of questions did she answer correctly?

Answers

Answer:

I think it roughly 66.67%

Step-by-step explanation:

sorry if I'm no help

The percent of questions she answered correctly is 80%.

How to find the percentage from the total value?

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

Given;

Lana correctly answered 48 of 60 questions on a math exam

Now,

=48*100/60

=480/60

=80

Therefore, the percentage will be 80%.

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After using some of the honey they collected for baking, they found that they only had 34 gallon of honey left. How much honey did they use for baking? Support your answer using a diagram, numbers, and words.

Answers

Answer:

34 gallons of honey left

Step-by-step explanation:

Fill in the blanks for the explicit formula.
-8, 22, 52, 82, ...

Answers

It is 30. F(30) = -8 + 30(n-1)

Answer:

it is 30

Step-by-step explanation:

i took the test so please mark me the brainlest

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance of 249,001. If he is correct, what is the probability that the mean of a sample of 36 cars would be less than 3245 miles

Answers

Answer:

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = 0.975

Step-by-step explanation:

Step(i):-

The mean number of miles between services

                   μ= 3408 miles  

The Variance of miles between services

                σ² = 249,001

                σ = √249,001 = 499

Let 'X' be a random variable in a normal distribution

Given sample size 'n' =36

Step(ii):-

           [tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

          Z = -163/83.16 = 1.96

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245)  =   P(Z≤1.96)

                   =   0.5 + A(1.96)

                   =  0.5 + 0.4750

                  =   0.975

Final answer:-

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) =0.975

           

         

         

Wen Naey started mkkdle sehool, she was 60 inches tall, When she started high school, she was 65 inches tal. V/h
was the iNercent ehange n her height?
O6Nrcent crease
O9INcent icrease
010Nercent crease
O0Nereent crease

Answers

The first one is the answer
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