Mathematics High School

Una autopista atraviesa un cerro mediante un túnel que tiene forma de arco parabólico, tiene 4 metros de altura ¿Cuál es la altura máxima que puede tener un camión de transporte que tiene 2 metros de ancho para pasar sin atorarse?

Answers

Answer 1

Answer:

supongo que < 3m

Step-by-step explanation:

el túnel tiene forma de arco parabólico, pero no aclara qué coeficiente tiene el término [tex]x^{2}[/tex], ej: si es  -[tex]x^{2}[/tex],  ó    -0.5 [tex]x^{2}[/tex], ó -0.1 [tex]x^{2}[/tex], ...  

Suponiendo que tuviese coeficiente -1, entonces la ecuación del puente es:

f(x) = -[tex]x^{2}[/tex] + 4

Tomamos el valor de f(x=1) = f(x=-1), porque suponiendo que el camión va por el centro del túnel, y teniendo 2m de ancho, queda 1m hacia cada lado:

f(x=1) = f(x=-1)  = 3

Con lo cual si el camión tiene 3m de alto choca con la curva parabólica que forma el túnel.

Una Autopista Atraviesa Un Cerro Mediante Un Tnel Que Tiene Forma De Arco Parablico, Tiene 4 Metros De

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Pleased help please please please please.

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Answer:

40

Step-by-step explanation:

Hello world can you help me with math?

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Answer:

Im going to have to say C

Step-by-step explanation:

I hope this helps you out!

please answer need help on quiz will give brainliest answer

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Answer:

A. (3,0) min

Step-by-step explanation:

Have a great day!

Enlarge the rectangle.

When a figure is enlarged, the scale factor must be ____
Less than 0
Between 0 and 1
Greater than 1

Reduce the rectangle.

When a figure is reduced, the scale factor must be ____
Less than 0
Between 0 and 1
Greater than 1

Answers

Answer:

1: greater than 1

2:between 0 and 1

Step-by-step explanation:

Answer:

1: greater than 1

2:between 0 and 1

Step-by-step explanation:

Slope Is --3, and (1, 2) is on the line.
The equation of the line is y

Answers

Answer:

y= -3x + 5

Step-by-step explanation:

Use the equation of a line formula:

y- y1 = m(x - x1)

where y1 and x1 are the y and x coordinates from the given point (1,2)

So y1= 2

x1= 1

And where m is the slope, -3

Plug in to get y-2 = -3(x-1)

Simplify and solve for y

y= -3(x-1)+2

y= -3x +3 +2

y = -3x + 5

An office supply store carries an all-in-one printer with a regular price of $240. The printer is on sale at 15% off. The sales tax is 5%. If the customer uses a $20 gift card, how much of the purchase price remains?

Answers

Answer:

I'm pretty sure it's $193.20

What is the value of x in the equation ? (image below)

Answers

Answer: 2

Step-by-step explanation:

2.5(6x-4)=10+4(1.5+0.5x) [Work out the brackets]

15x-10=0+6+2x [Solve]

15x-10=16+2x [Convey the terms]

15x-2x=16+10 [Add up the same terms and calculate]

13x=26 [Divide both parts]

x=2

Answer:

x = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

2.5(6x - 4) = 10 + 4(1.5 + 0.5x)

Step 2: Solve for x

Distribute:                                   15x - 10 = 10 + 6 + 2xCombine like terms:                   15x - 10 = 16 + 2xSubtract 2x on both sides:        13x - 10 = 16Add 10 to both sides:                 13x = 26Divide both sides by 13:             x = 2

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                    2.5(6(2) - 4) = 10 + 4(1.5 + 0.5(2))Multiply:                               2.5(12 - 4) = 10 + 4(1.5 + 1)Subtract/Add:                      2.5(8) = 10 + 4(2.5)Multiply:                               20 = 10 + 10Add:                                     20 = 20

Here we see that 20 does indeed equal 20.

∴ x = 2 is a solution of the equation.

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

Answers

Answer:

x=13

Step-by-step explanation:

15x-15

15*13=195

195-15=180

Answer:

Step-by-step explanation:

X=13 pls mark brainly

NEED HELP ASAP, WILL GIVE BRAINLIEST

Which are the two geometric means between 175 and 1.4?

a.
0.2, 0.04

b.
1.4, 0.0112

c.
35, 7

d.
131.25, 65.625

Answers

Answer:

The answer is C. 35, 7

Is this table proportional or non-proportional? Explain your reasoning to why this table is proportional or non-proportional.

Answers

Non proportional hope this helps :)

Shopping: Discounts
Situation: You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save?
Calculation With Distribution property. Show all work

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Answer:

2.69

Step-by-step explanation:

a leak is slowly draining water from a pool containing 324 gallons of water. How much water is remaining after 8 hours if it leaks 7 gallons per hour

Answers

268 gallons are remaining. The equation would be y=324-7x, with x being 8. 7(8) is 56, and then you take away 56 from 324, which then gives you 268 gallons remaining

i need help please -2 + 7b - 4b

Answers

Answer:

-2+3b

Step-by-step explanation:

I'll GIVE BRAINLIEST!!
PLEASE HELP IF YOUR GOOD AT MATH!! I NEED THIS RIGHT NOW

Answers

Answer:

M=-7 and n= the square root of 2

Step-by-step explanation:

integers are counting numbers (1,2,3,4, etc.) that can be negative. irrational numbers' decimals go on and on and on, like 4.1946183538 and dont repeat, im pretty sure

Point A is a representation of which number on the number line?
А
С
D
.
0
2
ОО

Answers

It is -3 brah

It is the 2nd

Answer:

its -3

Step-by-step explanation:

i take the quiz

jack is 2 years older than bob how old was bob when jack was 1

Answers

Answer:

uhhhh not born -1 year

Step-by-step explanation:

jack is 2 years older than bob jack is on so bob would not have been born yet

The cost for a box of cereal is $1.25. The store is selling the box of cereal for 1 point
$2.25. What is the percent of markup? *

Answers

:

Ss

Step-by-step explanation:

Please help please help please help

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Answer:

b

Step-by-step explanation:

ILL MARK U BRAINLIEST!!!

Answers

Answer:

i think the anwser is the 2nd one

Step-by-step explanation:

Solve the inequality:
9-47 > 5
a.
b.
> 1
<-4
<1
C.
d. r <-1

Answers

Answer:

b

Step-by-step explanation:

Answer:

r < 1

-

1. Move the constant to the right

9- 4r > 5

2. Calculate

-4r > 5 - 9

3. Divide both sides

-4r > -4

4. Solution

r < 1

Match the vocab word with the definition.

Answers

Answer:

1. = the first one

2. = the third one

3. = the second one

Step-by-step explanation:

share £30 in the ratio 1:2

Answers

Answer:

10:20

Step-by-step explanation:

I dont really know how to explain this but i beileve its 10:20

What is the Celsius temperature for 144 degrees Kelvin

Answers

-129.15 degrees in Celsius

Answer:

144°K=-129.15°C

6. What is the distance between two points
with coordinates at (840) and (20,5)?
A 35.3
C 47
B 37
D 54.1

Answers

Answer:

Step-by-step explanation:

h

Answer:

37

Step-by-step explanation:

Felix has $50 in a savings account that earns 5% interest, compounded annually. To the nearest cent, how much interest will he earn in 2 years?

Answers

Answer:

$55.13

Step-by-step explanation:

50 * 1.05 = 52.5

We do this step twice because the interest is for 2 years.

52.5 * 1.05 = 55.125

This rounds up to 55.13, your final answer!

Which is most likely the equation for the curre of best fit for the relationship?

Answers

That way the dog the cat smells like a truck with a dog

answer these questions
1.You have $6.96.You buy 6 items the cost $0.79 each.How much money do you have left?
2.How many 0.25 burgers can you make with 5.5 Ibs. of ground beef?
3. Find the next two numbers in the pattern. -96,48,-24,12....
100 points

Answers

Answer:

1) $2.22

2) 22 burgers

3) -6, 3

Step-by-step explanation:

Question 1:

6 x 0.79 = 4.74

$6.96 - $4.74 = $2.22

Question 2:

5.5 / 0.25 = 22

Question 3:

Each time the number divides by negative 2

12 / -2 = -6

-6 / -2 = 3

X (0,6) y (-3,15) what are the slope and y intercept

Answers

Answer:

y = -3/9x + 6

Step-by-step explanation:

slope = -3/9x

y-intercept = 6

What is the equation of the graph [tex]y=x^3[/tex] under a vertical stretch by the factor 2 followed by a horizontal translation 3 units to the left and then a vertical translation 4 units down?

a.) [tex]y=2(x+3)^3+4[/tex]
b.) [tex]y=2(x-3)^3+4[/tex]
c.) [tex]y=2(x+3)^3-4[/tex]
d.) [tex]y=2(x-3)^3-4[/tex]

Answers

Answer:

C. y = 2 (x + 3)³ − 4

Step-by-step explanation:

y = x³

Stretch vertically by 2.

y = 2x³

Shift horizontally 3 units to the left.

y = 2 (x + 3)³

Shift vertically 4 units down.

y = 2 (x + 3)³ − 4

Question is on picture

Answers

Answer:

4 or 4/1 (both the same thing just with plotting point writing 4/1 is easier for me so I know to go up 4 over 1 :) )

Step-by-step explanation:

Parallel lines have the same slope, so both lines will have the same slope. Use line 1’s points to find the slope with the formula

(y1-y2)/(x1-x2)

(5-1)/(-2-(-3)

4/1=4

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