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Dmitry [639]
3 years ago
6

Help me please!!!!!!!!

Mathematics
2 answers:
yanalaym [24]3 years ago
7 0

Answer:

A

Step-by-step explanation:

X=5 and 3

ella [17]3 years ago
5 0

Answer: a. x=3 or 5

Step-by-step explanation:

x^2-8x+15=0

When factoring this equation we need to find 2 numbers that multiply to get positive (15) and add to get negative (-8)

So -3 and -5 fit this description because -3+-5=-8 and -3*-5=15

(x-3)(x-5)=0

Solve for values of x to get x=3 and x=5

so X=3 or 5

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A number , x,rounded to 1 decimal place is 3.7 what is the error interval for x
Phantasy [73]
<h2>Answer:</h2>

The error interval for x is:

                  [3.65,3.74]

<h2>Step-by-step explanation:</h2>

The number after rounding off is obtained as:

                          3.7

We know that any of the number below on rounding off the number to the first decimal place will result in 3.7:

   3.65     3.66    3.67    3.68    3.69    3.70    3.71   3.72    3.73    3.74

( Because if we have to round off a number present in decimals to n place then if  there is a  number greater than or equal to 5 at n+1 place then it will result to the one higher digit  at nth place on rounding off and won't change the digit if it less than 5 )

         Hence, the error interval is:

             [3.65,3.74]

     

8 0
3 years ago
Please help!!!!!!! Will mark brainliest
netineya [11]

Answer:

\displaystyle 5

Step-by-step explanation:

\displaystyle ±7 = \sqrt{49} \\ \\ -7 = x + 2\:\:AND\:\:7 = x + 2 \\ \\ -9, 5 = x

Sinse you want the POSITIVE solution, your answer is 5.

I am joyous to assist you at any time.

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2 years ago
Which expression is equivalent to (x^1/2y^-1/4z)^-2?
tiny-mole [99]

Answer:

y^1/2/xz^2 option 3

Step-by-step explanation:

(x^1/2 y^-1/4 z)^-2= x^(-1/2*2) y^(1/4*2) z^-2= x^-1 y^1/2 z^-2= y^1/2/xz^2

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3 years ago
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pshichka [43]

Answer:

I think its f(n)=300,000n

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I got 1.3k points somehow so im feeling nice<br> giving 50 points+brainliest to the first answer
kotykmax [81]

Answer: HI ; ) Im ready......Okay whats the question?

Step-by-step explanation:

3 0
2 years ago
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