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8_murik_8 [283]
2 years ago
14

-2x^2 + 4x + 16 in vertex form​

Mathematics
1 answer:
Reil [10]2 years ago
6 0

Answer:

y = - 2(x - 1)² + 18

Step-by-step explanation:

- 2x² + 4x + 16 ← factor out - 2 from the first 2 terms

= - 2(x² - 2x) + 16

using the method of completing the square

add/subtract ( half the coefficient of the x- term)² to x² - 2x

= - 2(x² + 2(- 1)x + 1 - 1) + 16

= - 2(x - 1)² + 2 + 16

= - 2(x - 1)² + 18 ← in vertex form

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6 1/2 minus 5 3/4 in math
Nata [24]

Answer:

0.75, or 3/4

Step-by-step explanation:

Hope this helps! :D

7 0
2 years ago
Read 2 more answers
What is the value of (-12-6).-3.5?
Nastasia [14]

Answer:

-21.5

Step-by-step explanation:

-12-6=-18 minus 3.5=-21.5

8 0
3 years ago
NEED HELP ASAP!!
Solnce55 [7]

Answer:

Only Cory is correct

Step-by-step explanation:

The gravitational pull of the Earth on a person or object is given by Newton's law of gravitation as follows;

F =G\times \dfrac{M \cdot m}{r^{2}}

Where;

G = The universal gravitational constant

M = The mass of one object

m = The mass of the other object

r = The distance between the centers of the two objects

For the gravitational pull of the Earth on a person, when the person is standing on the Earth's surface, r = R = The radius of the Earth ≈ 6,371 km

Therefore, for an astronaut in the international Space Station, r = 6,800 km

The ratio of the gravitational pull on the surface of the Earth, F₁, and the gravitational pull on an astronaut at the international space station, F₂, is therefore given as follows;

\dfrac{F_1}{F_2} = \dfrac{ \dfrac{M \cdot m}{R^{2}}}{\dfrac{M \cdot m}{r^{2}}} = \dfrac{r^2}{R^2}  = \dfrac{(6,800 \ km)^2}{(6,371 \ km)^2} \approx  1.14

∴ F₁ ≈ 1.14 × F₂

F₂ ≈ 0.8778 × F₁

Therefore, the gravitational pull on the astronaut by virtue of the distance from the center of the Earth, F₂ is approximately 88% of the gravitational pull on a person of similar mass on Earth

However, the International Space Station is moving in its orbit around the Earth at an orbiting speed enough to prevent the Space Station from falling to the Earth such that the Space Station falls around the Earth because of the curved shape of the gravitational attraction, such that the astronaut are constantly falling (similar to falling from height) and appear not to experience gravity

Therefore, Cory is correct, the astronauts in the International Space Station, 6,800 km from the Earth's center, are not too far to experience gravity.

6 0
3 years ago
Is the square root of 8 greater than, less than, or equal to 4 ?
Tom [10]

Answer:

  • √8 is less than 4

Step-by-step explanation:

We need to compare √8 and 4

<em>To compare the numbers they should both be in the same format</em>

<u>√8 is not a perfect square so we'll put number 4 under root</u>

  • 4 = √4² = √16

<u>Now we compare</u>

  • √8 < √16

So √8 is less than 4

3 0
3 years ago
If Linda can walk 6 miles in 80 minutes,
Marta_Voda [28]
I think it is 4.5 miles per hour
8 0
3 years ago
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