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ICE Princess25 [194]
3 years ago
7

Help :( math for 8th

Mathematics
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

Step-by-step explanation:

x² - 10x - 2 = 0   {Add 2 to both sides}

            +2 = +2

x² - 10x     = 2

Now to find what to add both sides, divide the co-efficient of x by 2

10/2 = 5

Add 5² to both sides

x² - 10x + 25 = 5²

(x - 5)² = 5²

Take square root both sides,

x - 5 = ± 5

x- 5 = 5   ;   x - 5 = -5

  x = 5+5 ;      x = -5 + 5

  x = 10    ;      x = 0

rewona [7]3 years ago
7 0

Answer:

She should add 10x to both sides

Step-by-step explanation:

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Let g be the function given by g(x)=x^2*e^(kx) , where k is a constant. For what value of k does g have a critical point at x=2/
ArbitrLikvidat [17]
G `( x ) =2x * e^{kx}  + k x^{2} *e^{kx} = \\  = xe^{kx}(2 + kx )
2 + k x = 0
k x = -2
k = -2: x = - 2 : 2/3 = - 2 * 3/2
k = - 3
Answer: for k= - 3, the function g ( x ) have a critical point at x = 2/3. 
8 0
3 years ago
Alguien me podria ayudar a resolverlos con su procedimiento
Scilla [17]

Answer:

Step-by-step explanation:

f(x) = 2x² + x - 3

f'(x) = 4x + 1

f'(x) = 4(-1) + 1 = -3 slope

f(x) = 2(-1)² + (-1) - 3 = -2

(-1, -2)

-2 = -3(-1) + B

B = -5 y intercept

y = -3x - 5

f(x) = 1/x² = x⁻²

f'(x) = -2x⁻³

f'(-2) = -2(-2)⁻³ = -2/-8 = 1/4 slope

y = 1/4x + B

1/4 = 1/4(-2) + B

B = 3/4

y = 1/4x + 3/4

7 0
3 years ago
Please help :(
agasfer [191]

Answer:

y = -x - 4

Step-by-step explanation:

Plug in the point and slope into the equation y = mx + b, and solve for b:

y = mx + b

-6 = -1(2) + b

-6 = -2 + b

-4 = b

Then, plug in b and the slope into y = mx + b

y = -1x - 4

y = -x - 4 is the equation of the line

3 0
3 years ago
Roy uses 1/4 cup of batter for each muffin. Which list shows the amounts of batter he will use depending on the number of muffin
Digiron [165]
I think this is one of the reducing fractions problem:

If we look at option A.{1/4} {1/5} {1/6} {1/7} {1/8}.
Here, the reduced form of all the fractions is not equal to 1/4

If we look at option B. <span>1/4,2/4,3/4,4/4,5/4.
</span>Here, the reduced form of all the fractions is not equal to 1/4<span>

if we look at option C. </span><span>1/4,2/8,3/12,4/16,5/20. 
</span>Here, the reduced form of all the fractions is not equal to 1/4<span>

If we look at option D.</span>1/4,2/8,4/16,6/24,8/32.
Here, the reduced form of all the fractions is equal to 1/4
i.e.  
1/4 = 1/4
2/8 = 1/4
4/14 = 1/4
6/24 = 1/4
5/20 = 1/4

So, the correct answer is D.
  
4 0
3 years ago
Read 2 more answers
5/2x - 12 = 18 - 1/3x can yall help me im tryna get my grade up so im not a "failure" to my mom
mote1985 [20]

Answer:

x= 180/17

Step-by-step explanation:

You will need to simplify both sides of the equation, which isolates the variable.

5 0
3 years ago
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