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Eduardwww [97]
2 years ago
6

Rewrite the function by completing the square. f(x)=x^2-4x-26

Mathematics
1 answer:
Radda [10]2 years ago
5 0

Answer:

(x-2)^2-30

Step-by-step explanation:

use the form ax^2+bx+c to find the values of a, b, and c.

a=1, b= -4, c = -26

consider the vertex form of a parabola

a(x+d)^2+e

substitute the values of a and b into the formula d=\frac{b}{2a}

d=\frac{4}{2(1)}

simplify the right side.

find the value of e using the formula e=c-\frac{b^2}{4a}

e=30

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(5-t-t^4)(9t+t^2)pls help
madam [21]
  • Answer:

<em>- ( t⁶ + 9t⁵ + t³ + 4t² - 45t )</em>

  • Step-by-step explanation:

<em>Hi there !</em>

<em>(5 - t - t⁴)(9t + t²) =</em>

<em>= 45t + 5t² - 9t² - t³ - 9t⁵ - t⁶</em>

<em>= 45t - 4t² - t³ - 9t⁵ - t⁶</em>

<em>= - ( t⁶ + 9t⁵ + t³ + 4t² - 45t )</em>

<em>Good luck !</em>

3 0
4 years ago
What is the surface area of a sphere that has a volume of 3000cm
Vladimir [108]

The surface area of the sphere given its volume is  1006.06 cm².

<h3>What is the surface area?</h3>

The first step is to determine the radius of the sphere from its volume.

Volume of a sphere = (4/3) x (n) x (r^3)

  • n = 22/7
  • r = radius

∛(3000 x 3/4 x 7/22) = 8.95

Surface area of a sphere = 4πr²

4 x 8.95² x 22/7 = 1006.06 cm²

To learn more about the surface area of a sphere, please check: brainly.com/question/27267844

#SPJ1

8 0
3 years ago
105 centimeter to meter
olchik [2.2K]
The answer should be 1.05meters because there are 100cm in a meter.
8 0
3 years ago
Read 2 more answers
A certain delivery service offers both express and standard delivery. 75% of parcels are send by standard delivery and 25% are s
Nikitich [7]

Answer:

pictures are in order

Step-by-step explanation:

5 0
3 years ago
Find the standard equation of a parabola with a vertex of (-3,1)
kkurt [141]
1. Parabola's equation is y = a(x + b)^2 + c, where (b, c) is the vertex.
2. We have y = a(x - 3)^2 + 1
3. Take everything to the left side:
-a(x - 3)^2 + y - 1 = 0
That's the standard equation. Hope this helps! :)
3 0
3 years ago
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