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lubasha [3.4K]
3 years ago
9

The graphs of the equations Ax + By =15 and Ax - By =9 intersect at (2, 1). Find A and B. Show or explain your reasoning

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0
Hi here’s the answers hope this helps

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If a company has 5 employees with annual salaries of 30000 50000 30000 80000 and 70000 respectively what is the mean annual sala
Marina86 [1]

The answer is 52,000.


You have to add all of the values and divide them by the number of values. In this case you would do 30,000 + 50,000 + 30,000 + 80,000 + 70,000 which equals 260,000 then you would divide that number by 5 since there are 5 values.

5 0
3 years ago
X + 5y - 10 = 0<br> x = 2y - 8
ipn [44]
So since we know what x is, we can substitute it into the original equation for x like so to solve for y...

(2y - 8) + 5y - 10 = 0
2y - 8 + 5y = 10
2y + 5y = 18
7y = 18
y = 18/7 (or about 2.57)

So now we know what x is, we can sub it into the below equation to solve for x...

x = 2(18/7) - 8
x = 36/14 - 8 (or about -5.43)


3 0
3 years ago
Multiply or divide as indicated. x^4 • x^-2
Anettt [7]

The answer is 0 unless I did the math wrong


If so someone correct me. Other than that, hope this helped!

8 0
3 years ago
Read 2 more answers
please help me if you can if your going to say I'm cheating i don't care cause i know I'm not thanks!!​
Colt1911 [192]

Answer:

13.9 sorry if I'm wrong just trying to help.

Step-by-step explanation:

first plug in your numbers

a*2+ b*2= c*2

12*12= 144

7*7=49

144+49= 193

square root of 193: 13.89244399

rounded to nearest tenth is 13.9

6 0
3 years ago
select the correct answer Linden is investigation where they're putting plastic on her window will help seal out called the wint
Vinvika [58]

Answer:

B.

Step-by-step explanation:

.

5 0
2 years ago
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