Mathematics High School

1)The equation y=−4.9x2+8.82x+1.96 represents the height of the trajectory of a ball x seconds after it was released. The solutions to 0=−4.9x2+8.82x+1.96 are x=−0.2 and x=2. Which of these solutions represents the time it takes the ball to hit the ground?(1 point)
a) both x=−0.2 and x=2

b) x=−0.2

c) x=2

d) Neither of the solutions represents the correct time.

2) The equation y=−4.9x^2+19.5x+1.75 represents the height of the trajectory of a ball x seconds after it was released. At what time is the ball 10 meters above the ground?(1 point)

a) The ball never is never 10 meters above the ground.

b) approximately 0.5 seconds and 3.5 seconds

c) approximately 3.5 seconds

d) approximately 0.5 seconds

A baseball player throws a baseball directly upward into the air. The height of the ball is given by the equation y=−4.9x^2+89.5x+1.75 where y is the height in meters and x is the time in seconds. Is this equation a reasonable model for the ball's trajectory? Explain(1 point)

a) No, the initial height is 1.75 meters, which is much taller than any person.

b) No, the equation does not match the model for projectile motion.

c) No, the initial velocity would be 89.5 meters per second. This is approximately 200 miles per hour, which is faster than any human can throw a baseball.

d) Yes, the equation matches the model for projectile motion, so it is a reasonable model for the ball's trajectory.

The equation y=−16x2+275 models the height of a projectile where y is the height in meters and x is the time in seconds. Which of the following situations is the real-world scenario that is best modeled by the given equation?(1 point)

a) A ball being dropped from shoulder height.

b) A child tossing a ball into the air.

c) A stone being dropped off of the edge of a cliff.

d) A tennis ball being launched into the air by a tennis racket.

Answers

Answer 1

Answer:

Number 1 is A

Step-by-step explanation:

Related Questions

A basketball is thrown in the air. Part way up, the potential energy is 100 J, and its kinetic energy is 25 J. What is the total mechanical energy of the basketball?

Answers

Answer:

125

Step-by-step explanation:

mechanical energy is equal to the sum of kinetic and potential energy

100+25=125

If f(x) = 2x3 – 5x2 + 5, then what is the remainder when f (x) is divided by
X + 2?

Answers

Answer:

Step-by-step explanation:

195

abduls average speed is 40 mph in heavy traffic and his average speed is 50 mph in light traffic for 1 hour and light traffic for 2 hours how far did abdul travel

Answers

Answer:

over 9000

^^^

Liar.

Step-by-step explanation:

over 9000

^^^

Liar.

ASAP
-1.75 - 7.25x + 6.1 =

Answers

Answer:

=−7.25x+4.35

Step-by-step explanation:

Answer:

Scientific notation is just a short hand way of expressing gigantic numbers like 1,300,000 or incredibly small numbers like 0.0000000000045. Also known as exponential form, scientific notation has been one of the oldest mathematical approaches. It is favored by many practicioners. If numbers are too big or too small to be simply calculated, people reffer to scientific notation to handle these circumstances. This method is used by engineers, mathematicians, scientists.

An example of scientific notation is 1.3 ×106 which is just a different way of expressing the standard notation of the number 1,300,000. Standard notation is the normal way of writing numbers.

Step-by-step explanation:

this is the integer or first digit in any Scientific Notation. For example in 1.3 ×106, the mantissa is the "1"

i tried so it maybe it is. If this helped give me Brainliest.

i really need help!

Answers

I believe it’s D I hope this helped

Kyle found that

31/97 = 0.3196. Without doing any computation, explain how we know

that Kyle is wrong.

I need the answer really quickly!!!

Answers

Answer:

Because 97 x 0.3196 cannot be 31.

It will be a number that has a 2 as the last digit.

Step-by-step explanation:

97 x 0.3196 will have an answer with a 2 as the last digit because 7 x 6 = 42 (the last digits in each factor)

» Alexander has some watermelons. He gathers 13 more watermelons. He now has 62 watermelons.

Answers

Yeah but what is the question?

Round 22.963 to the nearest TENTHS

Answers

Answer:

23.0

Step-by-step explanation:

9 is closer to 10 than to 0. So we add + 1 to the integer behind it (22 + 1 = 23).

Answer:

23.0

Step-by-step explanation:

The 4th term of an A.P is 15 and the 9th term is 35. find the 15th term.​

Answers

Try the number twenty

(SAT Prep) Find the value of X. Plz help me I will give brainliest.

Answers

Answer:

Solution given:

a=40°[alternate angle are equal]

again

a+x+20°=180°[sum of angle linear pair is supplementary]

substituting value

40°+20°+x=180°

x=180°-60°

x=120°

PLEASE HELP ME PLEASE I NEED YOU GUYS HELP, (BRAINLEST) THANK YOU THIS IS DUE IN AN HOUR HELP PLSSSSS

Answers

i see nothingAnswer:

Step-by-step explanation:

Have a great rest of your day :)

Find the missing angles?

Answers

Answer:

a = 48

b = 132

Step-by-step explanation:

please let me know if you want me to explain this problem

Answer:

a = 48

b = 132

Step-by-step explanation:

42 + 90 = 132

180 - 132 = 48

help me with this please

Answers

The first term of the sequence is 100.
ITSSSSSSS 100!!!!!!!!!!!

5x + 7 + 2x Generate Equivalent Expressions

Answers

Answer:

starting problem:

5x + 7 + 2x

Combine like terms 5x5x and 2x2x

7x+7

Final Answer

7x+7

5x + 7 + 2x

Collect like term

7x + 7

Factor out 7 from the expression

Answer: 7 (x +1)

Work out
m
and
c
for the line:
y
=
4
x

Answers

Ce clasă ești sa văd daca te pot ajuta

What is the absolute value of negative 4 minus 9 i?

Answers

Answer: 13

Step-by-step explanation:

-4 - 9 = -13

Find the Circumference of the circle:

radious 2 cm

Answers

Answer:

circumference = 12.56 cm

Step-by-step explanation:

circumference=2 x radius x Pi

circumference = 2 x 2 x 3.14

circumference = 12.56

Answer:

were is a circle

Step-by-step explanation:

I dont see it

The world record for the most juice from grapes in one minute is 13 liters. How many milliliters is that?
1000 milliliters = 1 liter

Answers

Answer:

13,000 milliliters

Step-by-step explanation:

1 liter = 1000 milliliter

13 liters = 13 * 1 liter = 13 * 1000 milliliters = 13,000 milliliters

simplify the expression 7g+4p-3g-9p

Answers

Answer:

4g-5p i think

Step-by-step explanation:

7g-3g=4g

4p-9p=-5p

I think it’s 4g-5p

7g, -3g and 4g are like terms!

Which of the following is not a Pythagorean
Triple?
a. 6, 10,8
b. 18, 30, 24
c. 7, 24, 25
d. 5, 14,9

Answers

The correct answer is A

solve for x and y in the parallelogram

Answers

Answer:

x=3

y=6

Step-by-step explanation:

2x+5=11

2x=6

x=3

Input x for 2x+4

2×3+4=10

y+4=10

y=6

Hope this helps! :)

1. Which of the following is the x-coordinate of the solution to the system shown below?
(1) x = 9
(3) x=13
(2) x = 2
(4) x = 18
x+y = 11
x - y = 7

Answers

Answer:

x=9

Step-by-step explanation:

Using elimination method.

Add equation 1 to equation 2

x + y = 11

x - y = 7

---------------

2x + 0 = 18

Divide both sides by 2

2x = 18

---- ----

2 2

x = 9

Solve for a
6a-15=72

Answers

Answer:

a=

Step-by-step explanation:

72+15=87

87/6= 14.5

a= 14.5

Answer: 14.5

Step-by-step explanation:

6a - 15 = 72

add 15 on both sides

6a = 87

divide by 6 on both sides

a = 14.5

please and thank you

Answers

Answer:

a. y= -2x-3   b. y=x   c. y= 3/2x-4   d. y= -5/3x+12

Step-by-step explanation:

) Suppose you have a rope that is 293.5 cm long. If
you cut the rope into 10' equal pieces, how long
would each piece be? If you cut the rope into 102
pieces, how long would each piece be? How are the
quotients you found related?

Answers

Answer:

if you cut it into 10 pieces you get 29.35 cm longs pieces

Step-by-step explanation:

Use math vocabulary to explain why you think this number does not belong in the group. Be sure to write in complete sentences.

Answers

Answer:

because like for example the given number are 01 12

23 34

or 12233445566778 and etc.

your situation are 4556 and 3224 because are not ordered pair

HELP- i’m currently doing a test. It needs to be solved by substitution



8x-2y=40
2x+2y=-10

Answers

x= 3 , y=−8

Hopes this helps !!

The solutions to the inequality y ≤ −x + 1 are shaded on the graph. Which point is a solution?

(2, 3)
(3, –2)
(2, 1)
(–1, 3)

Answers

Answer:

(3,-2)

Step-by-step explanation:

I got it right on my Cumulative exam.

Answer:

B.✔(3,-2)

Step-by-step explanation:

E 2021

Round to the nearest hundred thousand.

288,846

Answers

300000

anything or 5 is rounded up

Answer:

289,000 nearest thousand

288,800 nearest hundred

Step-by-step explanation:

Find the number in the thousand place 8

and look one place to the right for the rounding digit 8

. Round up if this number is greater than or equal to 5

and round down if it is less than 5

.

x<-3
h(x)
3
x>-3
Part A. Evaluate h(6).
Part B. Evaluate 3h(1) + 2h(-3) – h(-4).

Answers

Answer:

Step-by-step explanation:

srry i dont know

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