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Vikentia [17]
3 years ago
11

What is the solution to the system of equations? x+y+3z=-4 2x-z=-3 -x-y-2z=5

Mathematics
1 answer:
goblinko [34]3 years ago
6 0

x=-4-y-3z

x=-3/2+1/2z

x=-5-y-2z

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If 2000 is placed into a bank account that pays 3% compound interest per year how much will be in the account after 2 years
Margarita [4]

Answer:

Account Balance = Principal x (1 + interest rate (decimal)) number of years, compounded annually.

Step-by-step explanation:

This is based on the information provided: 2121.80 (1.03)2 = 2000 So, on your initial deposit of 2000, you can collect 121.80 in interest after two years.

5 0
3 years ago
During a promotional weekend a state fair gives a free admission to every 175th Person who enters the fair on Saturday there wer
emmasim [6.3K]

Answer:

69

Step-by-step explanation:

If every 175th person gets free admission, that means

175th

175 * 2 = 350th

175 * 3 = 525th

person gets free admission and so on...

This basically means <em><u>"how many 175s are there is 6742 (for first day) and 5487 (for 2nd day)?"</u></em>

<em><u /></em>

We would need to divide and see the WHOLE number, not the fractional(decimal) amount remaining. So

<u>1st Day:</u>

6742/175 = 38.53

This means 38 people will get free admission

<u>2nd Day:</u>

5487/175 = 31.35

This means 31 people will get free admission

In the 2 days, total of 38 + 31 = 69 people will get free admission

8 0
3 years ago
Chứng minh rằng A/(B/C)=(A/B) hợp ( A giao C)
n200080 [17]

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5 0
3 years ago
Help what's the answer to 2 + 3a + 9a? 2+2a? Or 14a?
bulgar [2K]
2+12a. When adding, you're only collecting "like terms".
3 0
3 years ago
Which is the area of a circle with a radius of 5 units? (use 3.14 for )?
Sauron [17]
The area of a circle is A=πr². 
Since π is about 3.14 we can substitute that into the equation.
So A=3.14×r²
We can substitute the given radius for r.
A= 3.14 × 5²
When a number is squared, or has the two over it, we multiply it by itself. 
5 × 5= 25
A= 3.14 × 25
Simplify this and the area of the circle is about 78.5
A≈78.5
6 0
3 years ago
Read 2 more answers
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