Mathematics High School

Qual a altura máxima atingida por um projétil cuja trajetória pode ser descrita pela função: h(x) = –4x² + 5, sabendo que h é a altura do projétil e que x é a distância percorrida por ele, em metros?
A))5
B))6
C))7
D))8
E))9

Answers

Answer 1

Answer:

A altura máxima é 5

Step-by-step explanation:

Matematicamente, a altura máxima pode ser obtida

A altura máxima é simplesmente o vértice da parábola

Começamos diferenciando a função Isso será -8x

Agora, defina -8x como 0

Isso significa que x = 0

Agora, substitua x = 0 de volta na equação temos

f (0) = -4 (0) ^ 2 + 5

f (0) = 5

A altura máxima é 5

Related Questions

What is the value of x?

Answers

Answer:

x = 6

Step-by-step explanation:

Use the exterior angle theorem, which states that the 2 opposite interior angles add up to the measure of the exterior angle.

Set up an equation:

(8x - 13) + (9x - 10) = 11x + 13

Add like terms and solve for x:

17x - 23 = 11x + 13

6x - 23 = 13

6x = 36

x = 6

So, x = 6

Answer:

6

Step-by-step explanation:

PLEASE HELP I WILL GIVE BRAINALIST

Answers

Answer:

Step-by-step explanation:

Original 873  New 781

The new went down by about 10.5%

873*10.5%= 91.67

873-91.67= 781.33

It decreased 10.5%

Help! Math Perimeter!

Answers

Area= 3x0.8 =2.4

Perimeter= 3+3=6
0.8+0.8=1.6
6+1.6=7.6

Pls mark brainliest

Find the slope of the line passing through the points (9,3) and (9,-5).

Answers

Answer: its 8

Step-by-step explanation:

Use the distance formula to determine the distance between two points.

Kendall tends to spend 32% of her homework time on math. If it took her 26 minutes to complete her math homework, how much time did she spend on homework

Answers

81.25 minutes?
It says I need more characters, so I’m adding this sentence

Pls get it right it’s a test

Answers

Answer:

77.98

is not approximately

is?

Step-by-step explanation:

80.09 I’m pretty sure let me know if that’s right. :)

It takes Matt 6 minutes to swim 12 laps in the pool. How many laps could he swim in 9 minutes?

Answers

Answer:

18

Step-by-step explanation:

6*2=12

9*2=18

Two laps per minute

9514 1404 393

Answer:

  18

Step-by-step explanation:

Matt swims 12/6 = 2 laps each minute, so in 9 minutes he could swim ...

  (9 min)(2 laps/min) = 18 laps

if a pair of supplementary angles are in ratio 3:7 find them.​

Answers

Answer:

3x +7x=180

10x=180

x=180÷10

x=18

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3x+7x=180

10x=180

X=180/10

X=18

3x=3*18=54

7x=7*18=126

Evaluate function expression −2⋅f(−6)−7⋅g(−7)=

Answers

I hope this is the answer you’re looking for

Answer:

11

Step-by-step explanation:

-2 • f(-6) -7 • g(-7) = ?

As per graph:

f(-6) = 5

g(-7) = -3

Calculation:

-2 • f(-6) -7 • g(-7) =

-2(5) - 7(-3) =

-10 + 21 =

11

answer the question below to be featured in a Mr. Beast video!

Answers

Answer:

Yeah, theres no way

Step-by-step explanation:

lol

Answer:

imagine lol

Step-by-step explanation:

Expand.
Your answer should be a polynomial in standard form. (x+2)(x+3)

Answers

Answer:

x^2 + 5x + 6

Step-by-step explanation:

i had the same khan academy question

Answer:

x^2 + 5x + 6

Step-by-step explanation:

BRANLIST HELP NOW ... question is in the picture . to answer just number the pictures
like this ...
1. 1/1 (these are just examples not answer )
2. 1/1
3. 1/1
Also not every answer choice will be used, just 1 answer for each graph .

Answers

Answer:

why don't u use a website add me on a contact and i will tell you when i say contact i mean chat

Step-by-step explanation:

Answer:

Hi

Step-by-step explanation:

This was a while ago so its ok if i dont answer?

Cool with u?

Question in picture solve

Answers

Answer:

25

Step-by-step explanation:

165-140=25

140-115=25

115-90=25

90-65=25

65-40=25

twenty three less than sum of forty nine and thirty seven what is the answer?

Answers

Answer:

63.

Step-by-step explanation:

49 plus 37 is 86. subtract that by 23 and you get 63.

7⋅(−4)⋅(−6)
a. −168
b. −3
c. 17
d. 168

Answers

the correct answer would be D. 168


Four dice are placed into your hand and you roll all dice onto the floor. What are the odds that all
four dice will show a 3?


Please help me

Answers

Answer:

1/1296

Step-by-step explanation:

Complete the statement with the term that makes it true.

Measures of _____ show how the data is distributed in a set.

1. variability
2. mean
3. deviation

Answers

Answer:

I think the right answer is 3 I. E deviation abi

Answer:

number 2 mean

Step-by-step explanation:

Bob is hiking down a 15-mile country trail. He could hike at 5 mph for the first 2 hours and then go the rest of the way at 3 mph or he could just go the whole way at 4 mph. How long would each of these options take? Which option is the faster?

Answers

Answer:

the fastest is starting at 5 mph then going three because it would take 3.66666666667 hours

Step-by-step explanation:

the 4mph would take 3.75 hour while the 5mph then 3mph only takes 3.666666667

Answer:

The First Option: 3 2/3 hours

The Second Option: 3 3/4 hours

The First Option is fastest.

Step-by-step explanation:

Option 1:

First part- 5mph for 2 hours 5·2=10 (D=T·S)

15-10=5 because 15 is the total distance and 10 is the first part.(T=D/S)

Second part- 5/3= 1 2/3

5/3 because 5 is the distance left, and 3 is the speed. The time is 1 2/3 hours.

Option 2:

4mph 15m (T=D/S)

15/4= 3 3/4 hours

Find the degree measure of each angle in tbr triangle

Answers

Answer: ∠p = 85; ∠Q = 72; ∠R = 23

have: m∠P + m∠Q + m∠R = 180°

=> 4x - 7 + 3x + 3 + x = 180°

⇔ 8x - 4 = 180

⇔ x = (180 + 4)/8

⇔ x = 23

=> m∠P = 4.23 - 7 = 85°

m∠R = 23°

m∠Q = 3.23 + 3 = 72°

Step-by-step explanation:

What is the length of leg y of the right triangle? (1 point) A right triangle with hypotenuse 37 and legs 35 and y 2 8 12 35

Answers

the answer is 25 and 40

Answer:

12

Step-by-step explanation:

I took the test and the answer was 12

What is the place value of the 2 in the number 40,328,960 ​

Answers

the ten thousands place

Carla’s vet suggested that her new puppy have at least 64 square feet of exercise space. Carla plans to build an enclosed, square exercise pen in her back yard. How much fencing will she need for this exercise pen?

Answers

I think it’s 16 per side but that’s 64 ft around I hope this helps sorry if it’s wrong

How do you create zero pairs using algebra tiles?
O Add a positive unit tile to a negative unit tile.
O Add a positive unit tile to a positive unit tile.
* Add a negative x-tile to a negative x-tile.
VX
O Add a negative x-tile to a positive unit tile.

Answers

the correct answers are shown in my screenshot. #happycheating <333

The temperature fell by 18 degrees Fahrenheit today.
Write a signed number to represent this temperature change.
___
Ali received 5 dollars.
Write a signed number to represent this change.
____

Answers

Answer:

The temperature fell by 18 degrees Fahrenheit today.

Write a signed number to represent this

temperature change:

-18

Ali received 5 dollars.

Write a signed number to represent this change:

5

The signed number to represent both situations are - 18 and + 5 respectively.

What is an equation?

An equation is written in the form of variables and constants separated by the operation of multiplication and division,

An equation states that terms in different forms on both sides of the equality sign are equal.

Multiplication and division do not separate the terms of an equation.

Given, The temperature fell by 18 degrees Fahrenheit today.

Assuming the change in temperature is [tex]T_f[/tex] and initial temperature is [tex]T_i[/tex].

The tem[parature change can be represented by,

[tex]T_f = T_i - 18.[/tex]

Or - 18°F

Ali received 5 dollars, Assuming he had x dollars and after receiving he has now y dollars,

∴ The signed number represents this change.

y = x + 5.

Or + 5.

learn more about signed numbers here :

https://brainly.com/question/10751292

#SPJ2

The Price of a pair of shoes increases from $66 to $70 What is the percent increase to the nearest percent?

Answers

increase = 70 - 66 = $4
Percent = 4/66 * 100
= 6 percent

Answer:

6%

Step-by-step explanation:

x − 4.5 = 12

what is 12

Answers

Answer:

x=16.5

Step-by-step explanation:

x-4.5=12

+4.5    +4.5

________________-

x=16.5

16.5 is the sum. Hope this helps

Answer:

16.5

Step-by-step explanation:

Given f(x)=5x−3 , find f(−2).

Answers

Answer:

-13

Step-by-step explanation:

HELP PLEASE QUICKLY!! Please

Answers

Answer:

x = 29° :)

Step-by-step explanation:

4 + 5x + x + 2 = 180

6x + 6 = 180

6x = 174

174/6 = 29

x = 29

14) Bill is looking to work at two different car dealerships. The Subaru dealership is going
to offer him a monthly pay of $1200 plus 4.5% of his total sales. His monthly sales can
be represented by x. The BMW dealership will give him a flat pay of $1600 monthly.
Use an inequality to show when it would be better for him to choose to work at Subaru
then BMW. Solve your inequality and determine the amount of sales he needs to make
in order for it to be a better choice to work at Subaru.

Answers

Answer:

1) $1,200 + x × 4.5/100 > $1,600

2) Bill has to make more than $8,888.[tex]\bar 8[/tex], in total sales monthly for it to be a better choice to work at Subaru

Step-by-step explanation:

1) The given parameters are;

The amount of monthly pay the Subaru dealership is offering = $1,200

The percentage of his total sales, x, Subaru dealership is offering = 4.5%

The flat monthly pay the BMW dealership is offering = $1,600

Therefore, the inequality to show when it would be better for him to choose to work for Subaru is given as follows;

$1,200 + x × 4.5/100 > $1,600

2) The solution of the above inequality is given as follows;

$1,200 + x × 4.5/100 > $1,600

x × 4.5/100 > $1,600 - $1,200

x × 4.5/100 > $400

x > $400 × 100/4.5  = $8,888.[tex]\bar 8[/tex]

Therefore, in order to make it better to work at Subaru, Bill has to sell more than $8,888.[tex]\bar 8[/tex] worth of cars every month.

how many kilometers is 23 miles

Answers

Answer:

37.0149 kilometers

Step-by-step explanation:

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