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podryga [215]
3 years ago
15

Giai he phuong trinh -x+2t=1 2x+2y+z-2t=1 x+2y+z=2 3x+2y-z-4t=0

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

p-by-st

HHDABDAHDNJKjjsjjsjssjjajddhhhdd1j98`29`3`44``4p44

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Choose as many answers as apply.
alexandr1967 [171]

Answer:

  • multiplying a multi-digit number by itself several times (finding the power of a number)
  • finding a square root
  • statistical calculations

Step-by-step explanation:

We don't know what your introduction tells you, but the above-listed operations are ones I choose to use a calculator for. I also use a calculator for ordinary arithmetic, such as division by numbers with 2 digits or more. (It is simply faster and requires no scratch paper.)

If statistical calculations are not done with a calculator, they at least require the availability of suitable tables.

___

All of these operations can be done by hand without a calculator, and were in times passed. Lifetimes of effort were involved in generating some of the original math tables for statistics, trig, logarithms, and other functions readily evaluated using a modern calculator.

3 0
3 years ago
How can we simplify radicals involving negative values?
RSB [31]

Answer:

using imaginary numbers

Step-by-step explanation:

4 0
3 years ago
3. Express the mixed recurring decimal 15.732 in p/q form.​
Alborosie

Answer

15717/999

Step-by-step explanation

n=15.732732

10n=157.32732

100n=1573.27327

1000n=15732.732732

n= 15.732732

999n=15717

999 999

4 0
3 years ago
Read 2 more answers
CORRECT ANSWER WILL GET BRAINLIEST. 30 points!
Burka [1]
The answer is c i think
5 0
3 years ago
Suzanne bought 6 paint sets. Each set contains the same number of brushes. She has 18 brushes. Write and solve an equation to de
PSYCHO15rus [73]

Answer:

3

Step-by-step explanation:

Given that:

The number of paint sets, Suzanne bought= 6

As each set contains the same number of brushes.

Let x be the number of brushes each set contains.

So, the total number of brushes in 6 sets = 6x.

It is given that the total number of brushes she has is 18, which is equals to 6x.

So, the required equation is

6x=18

\Rightarrow x=\frac {18}{6}

\Rightarrow x=3.

Hence, the number of paint brushes each set contains is 3.

4 0
3 years ago
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