Answer:
Una ecuación de segundo grado completa es algo como:
y = a*x^2 + b*x + c
Un problema tipico que usa ecuaciones de este tipo es algo que nos haga multiplicar dos términos como h*(x + k) y n*(x + j)
Donde h, k, n, y j son números reales.
Entonces planteemos el siguiente caso.
"Juan tiene una tabla rectangular, de tal forma que su largo es (x + 3cm), y el ancho es igual a dos veces su largo, si sabemos que el área de esta tabla es 95 cm^2 ¿cuál es el valor de x?"
Acá hay que recordar que para un rectángulo de largo L y ancho W, el área es:
A = L*W
En este caso tendremos:
L = (x + 3cm)
Y el ancho es dos veces eso, entonces:
W = 2*(x + 3cm)
Entonces el area de esta tabla se escribirá como:
A = (x + 3cm)*2*(x + 3cm)
Ahora solo tenemos que expandir eso:
A = 2*x^2 + 12cm*x + 18cm^2
Ahora sabemos que el area de esta tabla es 95cm^2
Entonces:
95cm^2 = 2*x^2 + 12cm*x + 18cm^2
0 = 2*x^2 + 12cm*x + (18cm^2 - 95cm^2)
0 = 2*x^2 + 12cm*x - 77 cm^2
Esta es una ecuación de segundo grado completa, la cual deberiamos resolver para encontrar el valor de x como se nos pide en el problema.
What is the simplified version of
6(m - 2m) - (4m - 5m) ?
Answer:
-5m
Step-by-step explanation:
6m-12m-4m+5m
-6m+1m
=-5m
Find the distance between these two points (5,9) and (-7,-7)
Answer:
20
Step-by-step explanation:
Use the distance formula:
[tex]d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}\\d = \sqrt{(-7 - 5)^2 + (-7 - 9)^2}\\d = \sqrt{(-12)^2 + (-16)^2}\\d = \sqrt{144 + 256}\\d = \sqrt{400} = 20[/tex]
The distance between the points (5,9) and (-7,-7) will be 20 units.
What is the distance between two points?The shortest distance (length of the straight line segment's length connecting both given points) between points ( p,q) and (x,y) is:
D² = (x - p)² + (y - q)²
The points are given below.
(5,9) and (-7,-7)
Then the distance between the points will be
D² = (5 + 7)² + (9 + 7)²
D² = 12² + 16²
D² = 144 + 256
D² = 400
D = 20 units
Learn more about the distance between two points here:
brainly.com/question/16410393
#SPJ2
Which city had the highest temperature?
Which city had the lowest temperature?
Which city had a temperature greater than Oakland?
What was the difference in temperature between Detroit and Oakland?
degrees Celsius.
Find the missing measurements of the right triangle. Round your answers to the
nearest tenth if necessary.
You can use the calculator below!
Answer:
m∠B = 63°
AB = 26.4
AC = 23.6
Step-by-step explanation:
m∠B = 90 - 27 = 63°
Sin 27 = 12/AB
AB (sin 27) = 12
AB = 12/sin 27 = 26.4
Tan 27 = 12/AC
AC (tan 27) = 12
AC = 12/tan 27 = 23.6
3. Is this data linear or nonlinear? Explain how you know.*
Answer:
Non-linear
Step-by-step explanation:
Not consistently increasing
What number would represent 56 feet below sea level?
Answer:
-56
Step-by-step explanation:
That is because the 56 is below sea level, not above it, so it would be negative 56
Hope that helps!
-56ft
Since it is BELOW sea level it would be considered a negative number. If it were ABOVE sea level then it would be a positive number. Another way to think about this:
Above Sea Level = +
Below Sea Level = -
Hope this helps and have a nice day.
-R3TR0 Z3R0
A savings account increases from $300 to $309. What is the percent increase of the savings account?
Answer:
9 percent
Step-by-step explanation:
Answer:
3%
Step-by-step explanation:
1st Method: Increase Formula = (Last value-first value)/(first value)
Increase = (309-300)/300 = 9/300 = 3/100
= 0.03 or 3%
2nd Method: 309/300 = 103/100 = 1.03 (increase over 1 is 0.03 = 3%
a ratio of 10 to 2 is the same as A 8/2 B 8/10 C 12/8 D 5/1
Answer:
D. 5/1
Step-by-step explanation:
10/2 = 5
5/1 = 5
I hope this helps :)
Please give me the correct answer.ACE,Moderator,Genius,and Expert please help me.
Answer:
Initial value is (0 , 24) or just y = 24
Step-by-step explanation:
Initial value of a linear function is the y intercept
y = -3x + 24
x = 0, y = 24
It’s due tonight help please
Answer:
:)
Step-by-step explanation:
A) 4,4
B) 2,2
C) 4,3
Hope this helps
John bought a crate of floor tiles $100. The crate had 5 boxes of floor tiles. Each box contained 40 floor tiles. Write an equation to determine the cost per box, b.
Enter the equation like this
___=___ ___
Please help, I will give you brainly
Answer: 5X +40 = 100
Step-by-step explanation:
Find the percent change. 150 pounds to 135 pounds.
Answer:
-10%
Step-by-step explanation:
precent change = 135 - 150
(divide both sides by 150)
precent change = -0.1
(multiply both sides by 100 so change to precent)
precent change = -10%
Answer:
10%
Step-by-step explanation:
Mr. Locke was paid $190 for a job that required 40 hours of work. At this rate, how much would he get paid for a job that requires 60 hours of work?
Jameson pays $39.90 for 3.8 pounds of almonds. What is the price per pound of almonds?
Step-by-step explanation: The price of3.8 pounds of almonds=$39.90 thus we can write Hence the price of almonds is $10.50 per pounds.
AWNSERS:$10.50
Answer:
Step-by-step explanation: 39.90 x 3.8 = 151.62
Helppp. Please give workings too.
Answer:
The numerical value is 7.
Step-by-step explanation:
If 4 x is 3 y, then 8 x must be 3 x 2, which is obviously 6.
6y + y = 7y
--
7y/y
=7
Dale runs 10 miles in 75 minutes. At the same rate, how many miles would he run in 69 minutes?
Answer: 9.2 miles
Step-by-step explanation:
Answer: 9.2 miles
Step-by-step explanation: hope this helps you!
Ten years ago, Rapunzel's hair was 19 cm long. Now her hair is 20,193 cm long.
Approximately how many times as long is Rapunzel's hair now as it was ten years ago?
Answer:
1065. 1 * 10^3
Step-by-step explanation:
1 *10^3 = 1000Their wanting the ApproximationPlease help!!!!!!!!!!! Will give brainlist
Answer:
0.2
Step-by-step explanation:
When you have a decimal problem you add a 0 before the number. But if its a fraction ike 4 5/8 the decimal would be 4.58.
Which measure describes how much a sample mean varies when different samples are chosen?
A.
sample mean
B.
confidence interval
C.
standard error of the mean
D.
population mean
Answer: The answer is B
Which expression is equivalent to 46 - 2x)?
A) 24-8x
B) 24-6x
C) 10-8x
D) 10-6x
Answer:
24-8x
Step-by-step explanation:
Answer:jghgghfgfhgfhghfj
Step-by-step explanation:
Arrange the numbers in descending order 374430,802343,980377 and 230392,650863,364321
What is the values of a and b on the line?
[tex] \sf \red \: a = 6 \\ \sf \: b = 4[/tex]
#BeBrainly :)
Answer: a = 6 b = 6
Step-by-step explanation:
simplify 125×t-⁴/5-³×625×t-⁸
Answer:
Step-by-step explanation:
[tex]\frac{a^{m}}{a^{n}}=a^{m-n}\\\\a^{m}*a^{n}=a^{m+n}\\\\\frac{125t^{-4}}{5^{-3}}*625*t^{-8}\\\\=\frac{5^{3}t^{-4}}{5^{-3}}*5^{4}*t^{-8}\\\\=5^{3-[-3]+4}*t^{-4-8}\\\\=5^{3+3+4}t^{-12}\\\\=5^{10}t^{-12}\\\\=\frac{5^{10}}{t^{12}}[/tex]
The cargo area of a truck is ink 1/2 feet long 6 ft wide and 10 1/2 ft High the volume of the cargo area is what cubic feet
Answer:
31 1/2 ft^3
Step-by-step explanation:
volume = length x breadth x height
1/2 x 6 x 10 1/2
1/2 x 6 x 21/2 = 63/2 = 31 1/2 feet³
Round the number 78 to the nearest tenth
61
80
16
Answer:
The answer is 80
Step-by-step explanation:
78 is closer to 80
Answer:
the answer is 80
Step-by-step explanation:
it will be 80 because 78 is closest to 8
Solve 2(x+3)=x-4
What is x?
Answer:
x=-10
Step-by-step explanation:
[tex]2(x+3)=x-4[/tex]
distributive property on left side:
[tex]2x+6=x-4[/tex]
subtract x from both sides
[tex]x+6=-4[/tex]
subtract 6 from both sides
[tex]x=-10[/tex]
Answer:
-10
Step-by-step explanation:
2(x+3)=x-4
Distribute (multiply everything in parenthesis):
2x+6=x-4
Subtract -x from both sides
X+6=-4
Subtract 6 from from both sides:
X=-10
The length of one side of APTV is given. Use the relationship between the sides of a 30°-60°-90° triangle to find the lengths of the other two sides.
Answer:
your answers will be 3 and 6
Step-by-step explanation:
have a nice day !!^_^
PLEASE HELP QUICKLY!! The sum of two numbers is 12. Their product is 2. What are the two numbers?
Answer:
the answer is six and two
1, Find the value of a in the following equation 3a=24.
What's a linear function that has a slope of -3 and a y intercept of -2?
Answer:
y = -3x - 2
Step-by-step explanation:
Y = Mx + b
[slope = m, y-intercept = b]
plug in values:
y = -3x - 2
(P.S. - I saw your last question, sorry people aren't answering. I'll try my best to answer your questions if you have any others :) )
Without the y provided alongside the slope and y intercept, this problem can not be solved.
Step-by-step explanation: