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Viefleur [7K]
3 years ago
15

Which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 + 2x – 1 into the quadratic formula bel

ow?
Quadratic formula: x =
Mathematics
2 answers:
pav-90 [236]3 years ago
6 0

Answer:

x=\frac{-2\pm \sqrt{(2)^{2}-4(4)(-1)}}{2(4)} is the answer.

Step-by-step explanation:

Given quadratic equation is 4x²+ 2x - 1 = 0

To find the solution of the equation we use the quadratic formula

x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

Now we put the values of a = 4, b = 2 and c = (-1)

Therefore, quadratic formula for the equation given will be

x=\frac{-2\pm \sqrt{(2)^{2}-4(4)(-1)}}{2(4)}

lidiya [134]3 years ago
3 0
0 = 4x²<span> + 2x – 1

this equation is already ordered by degree, so it's in the correct form. the standard form of a parabola is like so: 0 = A</span>x² + Bx - C

that's exactly how you plug values into the quadratic formula. the coefficient for your squared value, A, is 4. take the coefficients from your other numbers as well.

a = 4
b = 2
c = -1
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Kenneth drove 194.3 miles in hours. What was his average speed?
Tems11 [23]

Answer:

194.3 miles/h

Step-by-step explanation:

avarage speed = total distanse/total time

194.3/1

6 0
2 years ago
77 prime or composite
Ludmilka [50]

<u><em>Seventy-seven is a composite number. </em></u>

Because you had to divide by eleven or seven. Then you can multiply by seven or eleven its equal to seventy-seven.

77/11=7

11*7=77

77/7=11

7*11=77

Final answer: \boxed{=77}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

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7 0
3 years ago
What is the value of k?<br><br> –36 = k – 6
kolezko [41]
Add 6 to both sides
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4 0
3 years ago
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jacque purchased 6 tickets to a hockey game. if the total cost was $225 what is the cost for one ticket
tino4ka555 [31]

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37.5

Step-by-step explanation:

225÷6........................................

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3 years ago
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Solve the equation in two different ways. Choose one method of solving in detail 5x+7(x+1) = 5x - 21
frozen [14]

Answer:

METHOD 1:

5x+7(x+1)=5x-21

5x+7x+7=5x-21

12x+7=5x-21

12x-5x=-21-7

7x=-28

x=28/7

x=4

METHOD 2:

5x+7(x+1)=5x-21

5x+7(x+1)=5x-21-5x

7(x+1)=-21

7x+7=-21

7x=-28

x=4

Step-by-step explanation:

METHOD 1:

5x+7(x+1)=5x-21

5x+7x+7=5x-21

12x+7=5x-21

12x-5x=-21-7

7x=-28

x=28/7

x=4

METHOD 2:

5x+7(x+1)=5x-21

5x+7(x+1)=5x-21-5x

7(x+1)=-21

7x+7=-21

7x=-28

x=4

6 0
3 years ago
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