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sladkih [1.3K]
2 years ago
5

How is estimation helpful when adding and subtracting decimals

Mathematics
2 answers:
Usimov [2.4K]2 years ago
6 0
It's helpful because let's say you have $3.23 and you need to give someone $1.00 then you would need to subtract then what way you will know what you need to do and how many money u have left
Gnesinka [82]2 years ago
4 0
Its a lot easier to do 1.200 - .200. Than to do 1.248- .239. How I see it, estimating always gives you something to fall back on or to help see if your exact answer is accurate
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Translate this phrase into an algebraic expression.<br> 61 less than twice Greg's score
marishachu [46]
I think the answer is x times 2 - 61
5 0
3 years ago
(How to calculate (-2,8) and (1,6) that =-2/3
Pavel [41]
(6-8)/(1+2)= -2/3 the answer to the question
3 0
3 years ago
Help please I’m trying to do my homework and don’t understand
11Alexandr11 [23.1K]

Answer:

Answer is 9.

I think this is helpful. Vote it and like me

6 0
2 years ago
Given the polynomial 21x 4 + 3y - 6x 2 + 34 What polynomial must be subtracted from it to obtain 29x 2 - 7 ? What polynomial mus
fredd [130]

Answer:

1. 21x⁴+3y-35x² + 41

2. -21x⁴-3y+6x² + x

Step-by-step explanation:

When adding and subtracting polynomials , you can use the distributive property to add or subtract the coefficients of like terms.

1. The polynomial is 21x⁴ + 3y -6x² + 34

To obtain polynomial 29x² -7 , we must subtract some polynomial from it.

Let that polynomial be k.

So, 21x⁴ + 3y -6x² + 34 - k =  29x² -7

k = 21x⁴ + 3y - 6x² +34 - 29x² +7 = 21x⁴ + 3y - 35x² + 41

2. To obtain a first degree polynomial, let that polynomial be x +34

So, 21x⁴ + 3y - 6x² + 34 + K = x + 34

K = x + 34 - 21x⁴ -3y + 6x² - 34

  = -21x⁴ - 3y + 6x² + x

6 0
3 years ago
A baker made 60 muffins for a cafe. By noon, 45% of muffins were sold. How many muffins were sold by noon?
Genrish500 [490]
27


60÷100 =0.6
0.6×45 = 27
7 0
3 years ago
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