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shutvik [7]
3 years ago
8

Please answer this correctly

Mathematics
2 answers:
adoni [48]3 years ago
5 0

Answer:

1/2

Step-by-step explanation:

The probability of getting heads is 1 out of 2.

1/2

When you flip a coin, you either get heads or tails.

dexar [7]3 years ago
4 0

Answer:

It’s a 1/2 chance it’s heads.

Step-by-step explanation:

Because there’s two sides

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How to find the x-intercepts of a parabola from the vertex, (-1,-108) and the y intercept (0,-105)?
Ulleksa [173]

Answer:

* The x-intercepts are -7 and 5

Step-by-step explanation:

* At first lets revise the standard and general forms of the

 quadratic function which represented graphically by the parabola

- f(x) = a(x - h)² + k ⇒ standard form

- Where point (h , k) is the vertex of the parabola

- f(x) = ax² + bx + c ⇒ general form

- Where a, b, c are constant

- c is the y-intercept ⇒ means x = 0

- h = -b/2a

- k = f(h)

* Lets solve the problem

- We will find the equation of the parabola

∵ The vertex is (-1 , -108)

∴ h = -1 and k = -108

∵ y-intercept = -105

- Equate the two forms

∵ ax² + bx + c = a(x - h)² + k ⇒ solve the (   )²

∴ ax² + bx + c = a(x² - 2hx + h²) + k ⇒ open the bracket

∴ ax² + bx + c = ax² - 2ahx + ah² + k ⇒ by comparing the two sides

∴ c = ah² + k

- Substitute the value of c , h , k in it

∴ -105 = a(-1)² + -108

∴ -105 = a - 108 ⇒ add 108 to the both sides

∴ 3 = a

- Lets write the equation in the standard form

∴ y = 3(x - -1)² + -108

∴ y = 3(x + 1)² - 108

* To find the x-intercepts means the parabola intersects the x-axis,

  then put y = 0

∴ 3(x + 1)² - 108 = 0 ⇒ Add 108 to the both sides

∴ 3(x + 1)² = 108 ⇒ divide the both sides by 3

∴ (x + 1)² = 36 ⇒ take square root for both sides

∴ (x + 1) = ± 6

# x + 1 = 6  OR x + 1 = -6

∵ x + 1 = 6 ⇒ subtract 1 from both sides

∴ x = 5

∵ x + 1 = -6 ⇒ subtract 1 from both sides

∴ x = -7

* The x-intercepts are -7 and 5

∴

3 0
3 years ago
Solve for n. 5/30= n/60
drek231 [11]
N=10 ...................................
6 0
3 years ago
Read 2 more answers
Mia is three years older than twice her sister Brooke's age. The sum of their ages is
galina1969 [7]

Answer:

Brooke can be no older than 21

Step-by-step explanation:

M=3+2B

M+B is less than or equal to 30

3+2B+B=30

3+3B=30

3B=27

B=9

M=21

6 0
3 years ago
Read 2 more answers
Solve this problem. 10^3 * 2^3
Stella [2.4K]
10 to the power of 3 would be 1000.
2 to the power of 3 would be 8.
1000 x 8 = 8000

I hope this helped you <3 
4 0
3 years ago
Find the radius of a circle with a circumference of 30 units. Round your answer to the nearest tenth (1 decimal place).
Vlad [161]

Answer:

The radius would be 4.8

Step-by-step explanation:

The circumerfence of a circle can be found use the equation C=2\pir. So since we are given the circumerce we need to rearrange the eqaution to it looks like \frac{30}{2\pi }=r. when we do this out we find that the radius equals 4.8.

4 0
3 years ago
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