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3 years ago

Please answer correctly !!!!!!!!! Will mark brainliest answer !!!!!!!!!!!!

Mathematics

1 answer:

dexar [7]3 years ago

3 0

Answer:

So it will take the stone 1 (one) second to reach its maximum height.

Step-by-step explanation:

Notice that the mathematical quadratic expression given is that of a parabola with branches pointing down. This means that the maximum value for that parabola is at the vertex. Your expression is also given in vertex form:

$f(x)=a\,(x-x_v)^2+y_v$

where the pair of coordinates $(x_v,y_v)$ are the x coordinate of the vertex and the y coordinate of the vertex.

Since x in your case is the time the stone is on the air, then the maximum (vertex) is at the point (1, 45) where "1" is the time in seconds and 45 is the height of the stone in meters.

So it will take the stone 1 (one) second to reach its maximum height.

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Photo and Video Sharing. Photos and videos have become an important part of the online social experience, with more than half of

love history [14]

Answer: 0.923

Step-by-step explanation:

Let A be the event an Internet user posts photos that they have taken themselves, and B be the event an Internet user posts videos that they have taken themselves.

Pew Research Center finds that

P(A)=0.52 P(b)=0.26, and P(A or B)=0.54.

To find : P(A|B)

Since , $\text{P(A or B)=P(A+P(B)-P(A and B)}$

i.e. $\text{P(A and B)=P(A)+P(B)-P(A or B)}$

$\text{P(A and B)=}0.52+0.26-0.54=0.24$

Now, using conditional probability formula ,

$P(A|B)=\dfrac{\text{P(A and B)}}{\text{P(B)}}\\\\=\dfrac{0.24}{0.26}=0.923076923077\approx0.923$

Hence, the conditional probability that an Internet user posts photos that they have taken themselves, given that they post videos that they have taken themselves = 0.923

5 0

3 years ago

I will mark you the brainiest for the correct answer, please be correct, Have a good day and take care, thanks. ( VIEW THE IMAGE

Gwar [14]

First error is that the legs are a and b so a should be x and b is 6 and c is 10 the second error is at the end they did not take the square root to get x by itself the real answer should be
X^2 +6^2=10^2
X^2+36=100
X^2 =64
X=8

6 0

3 years ago

Which mixed number correctly describes the shaded area of the fraction bars? 2One-half 2Two-sixths 2Two-fifths 3

alexandr1967 [171]

Answer:

File doesn't appear, can't help you without enough infomation.

Step-by-step explanation:

5 0

3 years ago

HELP MEE ASAP PLSSSS ♥

Oksanka [162]

Step-by-step explanation:

you add

Hours. Minutes

5. 48

+7. 78

12. 126

Then 126÷60 minutes =2hours 6mins

12hrs+2hrs=14hrs

Answer=14hours 6minutes

7 0

3 years ago

If m = 7x + 7, m = 4y, and m = 112, find the values of x and y

tester [92]

If m = 7x + 7, m = 4y, and m = 112

since m = 112

112 = 7x + 7
112 - 7 = 7x
105= 7x
x = 15

112 = 4y
y = 28

6 0

3 years ago

Read 2 more answers