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4 years ago

If we have the equation y=ax2+bx+c, how can we can find the x-coordinate of the vertex?

Mathematics

1 answer:

pishuonlain [190]4 years ago

4 0

To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.

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Amy earns £10.00 per hour. She gets a raise, and her new hourly rate is £11.50. What is the percentage change in her hourly rate

Nookie1986 [14]

Answer: 15%

Step-by-step explanation:

% change = change/ actual value x 100

Change = 11 .50 - 10 = 1.5

Therefore % change = 1.5/10 x 100

= 15%

7 0

4 years ago

Read 2 more answers

The television show 50 Minutes has been successful for many years. That show recently had a share of 29, meaning that among the

BigorU [14]

Answer:

(a) P (none) = 0.005873

(b) P ( at least one household ) = 0.9941

(c) P ( at most one household ) = 0.9960

(d) not wrong

Step-by-step explanation:

Given data

probability P = 29% = 0.29

no of sample n = 15

tv show X = 50

to find out

the probability that none of the households

the probability that at least one household

the probability that at most one household

If at most one household is tuned to 50 Minutes, does it appear that the 19% share value is wrong

solution

the probability that none of the households is tuned to 50 Minutes is

P (none) = 10C0 × $P^{0}$ × $(1 - 0.29)^{15}$

P (none) = $(0.71)^{15}$

P (none) = 0.005873

and the probability that at least one household is tuned to 50 Minutes is

P ( at least one household ) = 1 - P(none)

P ( at least one household ) = 1 - 0.005873

P ( at least one household ) = 0.9941

the probability that at most one household is tuned to 50 Minutes is

P ( at most one household ) = P (none) + P (x=1)

P ( at most one household ) =0.9941 + 10C1 × $(0.23)^{1}$ × $(0.71)^{14}$

P ( at most one household ) = 0.9960

and in last part If at most one household is tuned to 50 Minutes it appear that the 19% share value is not wrong

because P( at most one household ) is not zero

8 0

3 years ago

Point of

lesya692 [45]

DOWNLOAD PHOTOMATH FOR THE ANSWER

5 0

3 years ago

Maggie has 20 buttons which is 4 times more than the 5 zippers she has. 20 is 4 times as many as 5. What is the equation to matc

Elina [12.6K]

Answer:

20 = 4 × 5

Step-by-step explanation:

The translation from English is straightforward. "is" means "=". "times" is usually represented by "×" or a raised dot (·).

20 is 4 times 5

translates to

20 = 4 × 5

5 0

3 years ago

A maple tree is 16 yards tall and its shadow is 12 yards long. A nearby observation tower is 12 yards tall. How long is the obse

pashok25 [27]

Answer: 9 yards

Step-by-step explanation:

Given

The maple tree is 16 yards tall and its shadow is 12 yards tall

Suppose the angle made by the maple tree is x

$\Rightarrow \cos x=\dfrac{12}{16}$

For the tower also, the angle made by the tower and its shadow is x

Suppose the length of the shadow is y

$\Rightarrow \cos x=\dfrac{y}{12}$

Substitute the value of $\cos x$

$\Rightarrow \dfrac{y}{12}=\dfrac{12}{16}\\\\\Rightarrow y=9\ \text{yards}$

3 0

3 years ago