Suppose the height of a ball in feet is given by the quadratic equation below, where T is in seconds. What expression will give the time when the ball reaches its maximum height? h=-16t^2+50t+8. Please look at the image for the available answers. Thank you.

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Explanation:

Let's name the friends A, B, C

If person A is first, then B or C could be second and third.

So we have ABC or ACB as two possible outcomes.

If B is first, then either A is second or C is second. Meaning we have BAC or BCA.

If C is first, then we have CAB or CBA

Overall here are the 6 different ways to have the runners finish

Note how for the first slot we have 3 ways to pick the winner. Then after that selection is made, we have 2 choices left, then 1 choice for third place. Therefore, 3*2*1 = 6 different outcomes are possible.

We can use the factorial operation on the calculator to do this with one button press, so we'd say 3! = 6. The exclamation mark means "multiply from 3 down to 1, counting down the whole time".

Another example of a factorial is:

5! = 5*4*3*2*1 = 120

Answer:

see below

Step-by-step explanation:

The student put 5 in for y and 1 in for x.  It should be x=5 and y =1

y = 3x+2

1 = 3*5 +2

1 = 15+2

1 = 17

This is not true so this is not a solution

Answer:

see below

Step-by-step explanation:

The student put 5 in for y and 1 in for x.  It should be x=5 and y =1

y = 3x+2

1 = 3*5 +2

1 = 15+2

1 = 17

This is not true so this is not a solution

Answer:

∡1 = 64°

Step-by-step explanation:

∡3 = 180-104 which is 76°

∡1 = 180 - (40 + 76) = 180-116 or 64°

Answer:

x =1 and y=-1

Step-by-step explanation:

2x - 3y=-1

x-y=1

there for  ok there is a lot of steps i had to do so ill take a pic of it

and the big one is the first one

Answer:

15 feet

Step-by-step explanation:

Answer:

0.95 0.85 0.78 0.47 0.9

Step-by-step explanation:

5 ways.

Answer:

-1 and 1/7

Step-by-step explanation:

one way

5 and 5/7 = ((5*7)+5) / 7 = 40/7

(40/7 ) / -5 = (40/7) * (-1/5) = -40/35 = -1 and 5/35 = -1 and 1/7

another way

(5 and 5/7) / -5 = 5/-5 and (5/7) * (1/5) = -1 and 1/7

Answer:

64 inches sq

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

A. 6 (2n - x +8)

Step-by-step explanation:

Answer:

6(2n-x+8)

Step-by-step explanation:

If a number is in front of the bracket it means times everything on the inside by that number.

So you times everything by 6.

6×2n=12n

6×-x= -6x

6×8=48

Then you put it into an equation:

12n-6x+48

Hope this helps :)

Answer:

Step-by-step explanation:

25+105+x=180 degree(being sum of the interior angles of a triangle)

130+x=180

x=180-130

x=50 degree

Answer:

B. 50

Step-by-step explanation:

total angle of triangle = 180⁰

hence,

25 + 105 + x = 180

x = 50

therefore ans is B. 50⁰

Answer:

7/3

7 is increased by 11 so you decrease it by 11

7-11= -4

3 is decreased by 1 so you increase it by 1

3+1= 4

-4/4

Answer: 27/64

Step-by-step explanation:

Trust me

Answer:

6

Step-by-step explanation:

288 = 300-2x

Answer:

t = 59°

Step-by-step explanation:

t and 59° are vertically opposite angles and are congruent , so

t = 59°

Answer:

The square root of 25 is 5 because 5 times 5 is 25

Step-by-step explanation:

Answer:

Theresa school has greater % of girls

Step-by-step explanation:

Given

Number of girl in the Anthony school = 260

Total student in Anthony school = 500

% of girl in the Anthony school = 260/500 * 100 = 52 %

Number of girl in the Theresa school = 360

Total student in Theresa school = 600

% of girl in the Theresa school = 360/600 * 100 = 60%

Theresa school has greater % of girls

We need to find the angle measure of the minor arc which is [tex]\sf\widehat{AC}[/tex] . We note that the measure of a complete angle is 360 degree. So that ,

Using this :-

[tex]\sf : \implies \angle ABC + m\angle ABC = 360^o \\\\\sf: \implies 106^o + m\angle ABC = 360^o \\\\\sf: \implies m\angle ABC = 360^o - 106^o \\\\\sf: \implies \red{ m \angle ABC = 254^o }[/tex]

Hence the required answer is 254° .

Answer:

7

Step-by-step explanation:

you divide 140 by 20 & it gives you 7 i hope this helps ..

Answer:

y = 36x - 18

Step-by-step explanation:

(1,18) (2,54)

y2 - y1 / x2 - x1

54 - 18 / 2 - 1

36 / 1

= 36

y = 36x + b

18 = 36(1) + b

18 = 36 + b

-18 = b

Answer:

Step-by-step explanation:

take 18 degree as reference angle

using cos rule

cos 18=adjacent/hypotenuse

0.95=20/x

x=20/0.95

x=21.05

x=21.2

Answer:

The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs)

On one side of the square, it is 4.5 units long. The formula in finding the area of a square is A = s^2, where s is for side. The formula can also be A = s * s in which both formulas are the same and will result in the same answer. So overall, the area of the square is 20.25 or 20 ¼ square units. Hope this helps!

Answer:

Hope this helped! <3

Step-by-step explanation:

the median for number 1 is: 7.5 and the mean is 9.16667

the median for number 2 is: 100 and the mean is 90.4

the median for number 3 is: 10.5 and the mean is 18.16667

Answer:

Hi!

number 1: median: 8, 12 or 10

number 2: median: 100

number 3: median: 12, 2 or 7

number 1: mean: 9.16

number 2: mean: 90.4

number 3: mean: 18.16

Step-by-step explanation:

The mean is just all the numbers added up in a data set divided by how many numbers are in the data set. That gets you the average

The median is just the number in the middle of the data set.

Also for the first the median is either 10 or both 8 and 12 Because there's not 1 number in the middle it can be 8 and 12 of you want it averaged them it would be 10 I dont know which you want so you would have to figure that out

same with number 3

Also for the means it might vary depending if you need to round or not

Answer:

F'

Your answer is correct

Step-by-step explanation:

The image most of the time we will put ' prime on it to let the other know that this is the image

Answer:

23

Step-by-step explanation:

8-2=6

6×3=18

18+5=23

Answer: 23

Step-by-step explanation:

Answer:

The last one looks correct

Step-by-step explanation:

Because if they have stronger winds then that would improve their flight making them get use to it, and will for sure get stronger over time

Answer:

a = 156

Step-by-step explanation:

24  and  a form a straight line so they add to 180 degrees

24 +a = 180

Subtract 24 from each side

24+a-24 = 180-24

a = 156

Answer:

x=2

Step-by-step explanation:

To get from the left figure to the right figure on the bottom we multiply by 7

3*7 =21

To go from the right  figure to the left we divide by 7

14/7 = 2

x would equal 2

Answer:

its the set free for each job is 45