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rosijanka [135]

3 years ago

7

3. Find x, y, u, and v satisfying the system of four equations: x + 7y + 3v + 5u = 16 8x + 4y + 6v + 2u = -16 2x + 6y + 4v + 8u

= 16 5x + 3y + 7v + u = 16

1 answer:

Sophie [7]3 years ago

8 0

Answer:356

Step-by-step explanation:

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The marks obtained by students are 10, 13, 12, 15, 25, 30, 20, 35, 40, 18. Calculate the median mark.

antoniya [11.8K]

Answer:

i think its 30

Step-by-step explanation:

3 0

2 years ago

What's <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B50%20-%201%7D%20" id="TexFormula1" title=" \sqrt{50 - 1} " alt=" \sqrt

nikklg [1K]

Inside the root is 50-1

50-1 = 49

You would remain with root 49 but, if you calculate the square root the answer would be 7 because...

7•7 = 49

^ So, the answer is 7

4 0

2 years ago

Read 2 more answers

If f(x) = 2x2 + 1 and g(x) = x2 – 7, find (f – g)(x).

nadya68 [22]

Answer: The required value is

$(f-g)(x)=x^2+8.$

Step-by-step explanation: The given functions are:

$f(x)=2x^2+1,\\\\g(x)=x^2-7.$

We are given to find the value of $(f-g)(x).$

We know that, if s(x) and t(x) are any two functions of a variable x, then we have

$(s-t)(x)=s(x)-t(x).$

Therefore, we have

$(f-g)(x)\\\\=f(x)-g(x)\\\\=(2x^2+1)-(x^2-7)\\\\=2x^2+1-x^2+7\\\\=x^2+8.$

Thus, the required value is

$(f-g)(x)=x^2+8.$

5 0

2 years ago

One more than the difference between 18 and seven times a number is -9

Reptile [31]

(18-7x)+1= -9 Hope this helps ^^

8 0

2 years ago

Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.

olga nikolaevna [1]

Answer:

<u><em>16 : 2 + 3 </em></u> (remember pemdas)

Step-by-step explanation:

Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.

16 : 2 + 3 = 11

8 0

1 year ago