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stepan [7]
2 years ago
13

When we first learn arithmetic, we focus on working with whole numbers. Then, we extend our understanding to fractions and negat

ive numbers.
In algebra, we transfer these same skills to expressions involving variables. What elementary skills have you used so far in this course, and how have you extended them?

PLESE ANSWER AS FAST AS YOU CAN, IT MEANS ALOT!
Mathematics
1 answer:
vodka [1.7K]2 years ago
3 0

Answer:

I don't think I can remember every skill I was taught through the years but in Kindergarten we used Number Sense so we could understand the meaning of more and less also there's estimation and  PEMDAS. I've also learned how to round up so that the solution is at least around those numbers if the skill is to be applied.

hope that helps

Step-by-step explanation:

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Evaluate the expression 2(2x-3y)-5xy where x=-2 and y=-1
icang [17]

Answer:

-12

Step-by-step explanation:

2 (2x-3y)-5xy

4x-6y-5xy

4(-2)-6(-1)-5*-2*-1

-8+6-10

-12

8 0
3 years ago
What is the estimate of 253,889
kobusy [5.1K]
Nearest thousand would be 300,000
4 0
4 years ago
[6] Jessica sold one third of her records and then bought 84 more. She now has 178 records. How many records did Jessica begin w
tia_tia [17]

Answer:

  • 141 records

Step-by-step explanation:

Let the initial number be x

<u>Sold 1/3x, and now has:</u>

  • x - 1/3x = 2/3x

<u>Bought 84 more and now got 178:</u>

  • 2/3x + 84 = 178
  • 2/3x = 94
  • x = 94 ÷ 2/3
  • x = 94 × 3/2
  • x = 141

Jessica had 141 records initially

7 0
3 years ago
4 minus 1.2<br>what is it 2.8 instead of 3.2? ​
MatroZZZ [7]

Answer:

2.8 is correct

Step-by-step explanation:

  4.0

-   1.2

The 0 becomes 10

10 - 2 = 8

The 4 becomes 3

3 - 1 =2

2.8

3 0
3 years ago
Word problem:
Jlenok [28]

Answer:

Below.

Step-by-step explanation:

30 kg 500g + 28kg 700g

= 58kg + 1200g

= 59kg 200g.

Difference

= 30 kg 500g - 28kg 700g

= 2kg + 500 - 700

= 2kg - 200g

= 1kg 800g.

3 0
3 years ago
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