Answer:
La calculadora y el cuaderno costaba 9 y 1,8 euros hace tres días.
Step-by-step explanation:
A partir del enunciado podemos construir el sistema de ecuaciones lineales:
Hace tres días:
[tex]x+y = 10.80[/tex] (1)
Actualmente:
[tex]1.08\cdot x + 0.9\cdot y = 11.34[/tex] (2)
Donde:
[tex]x[/tex] - Precio de la calculadora.
[tex]y[/tex] - Precio del cuaderno.
Por métodos algebraicos, tenemos que el sistema de ecuaciones tiene la siguiente solución:
[tex]x = 9[/tex], [tex]y = 1.8[/tex]
La calculadora y el cuaderno costaba 9 y 1,8 euros hace tres días.
if the radius of the circle becomes two times what will be the new area of the circle
Answer: So when you double the radius, the area goes up by 4 times because 2 squared is 4. The area will always go up by the square of how much the radius goes up. By contrast, the circumference will only double -- from 12.56 to 25.12 because you do not square the radius (or diameter) -- you just multiply it by pi.
Step-by-step explanation:
Benji is distributing candy to trick or treaters for Halloween.
• After 7 trick or treaters, he has 117 pieces of candy remaining
• After 12 trick or treaters, he has 102 pieces of candy remaining
How many pieces of candy does each trick or treater get?
Answer:
3 pieces:)
Step-by-step explanation:
12-7=5
117-102=15
15/3=5
There are 666 people in Eden's family. Each person drinks 5/2 liter of milk each week.
Answer:
2 and 2/5 gallons of milk.
Here is a sketch of the curve y = sin(x + a)° + b
o
90
180
270
360 x
-1
Given that 0
find the value of a and the value of b.
(2 marks)
.
Answer:
o
90
180
270
360 x
-1
Given that 0 find the value of a and the value of b.
(2 marks)
.
The values of a and b are π/2 and -1, respectively
How to determine the values of a and b?The parent function of a sine function is:
y = sin(x)
When the function is shifted left by π/2 units, it becomes
y = sin(x + π/2)
When the function is shifted down by 1 unit, it becomes
y = sin(x + π/2) - 1
This means that the graph of y = sin(x + π/2) - 1 is the sine graph shifted left and down by π/2 and 1 unit respectively.
By comparing y = sin(x + π/2)° - 1 and y = sin(x + a)° + b, we have:
a = π/2 and b = -1
Hence, the values of a and b are π/2 and -1, respectively
Read more about function transformation at:
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HELP PLEASE!!! ILL MARK BRAINLIEST FOR WHOEVER ANSWERS FIRST!!!!! MATH QUESTIONS!!!! ONLY GOING FOR 35 MINUTES!!!!!
Fill in the blanks to describe how to find solutions to systems of equations by graphing.
The solution to a system of equations is the _________________________ where the two lines
_______________.
If the two lines in the system have different slopes, there will be _______________ solution(s).
If the two lines in the system have the same slope and different y-intercepts, there will be
_______________ solution(s).
If the two lines in the system have the same slope and the same y-intercept, there will be
_______________ solution(s).
Step-by-step explanation:
2nd is same solution
3rd is different solution
4th is same solution
(how I did this is by simply mathematics )
+ - = -
+ += +
Describe a situation in which you might add 1/3+1/4+1/2
Answer:
wwdwaDwadfafwfwefwfwefwefwefwefwefwweqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
Step-by-step explanation:
Use the distributive property to write an expression that is equivalent to 8(a + 4).
?
plzzz help with this
Find the volume of the cone. What is the radius? 12 What is the height? 5 Write the volume in terms of pi (1/3 times radius squared times the height only). π km3 Solve for the volume (Multiply by 3.14 this time). km3
Answer:
can you post a pitcure of the question... i cant really understand the words like this.
Step-by-step explanation:
Write the following numbers in order from least (smallest) to greatest (largest). *
1, 3, -1, 0, -5
Answer:
-5 , -1 , 0 , 1 , 3
Step-by-step explanation:
YOU CAN BUY 5 BANANAS FOR $2.50. HOW JAST
MUCH WILL IT COST TO BUY / BANANAS? YOU
BUY
Please Help!
Answer:
It will cost $12.50Plz help ASAP!!
Which two rational numbers does v14 lie between?
Answer:
19/8 and 22/7
Step-by-step explanation:
Answer:
[A. 19/6 and 22/7]
Step-by-step explanation:
What percent of 380 is 76?
Answer:
The percentage of 76 out of 380 can be found by division.
76/380 = 0.2
So, 76 is 20% of 380
Let me know if this helps!
Write each expression as a multiple power of 10
Answer:
ok
Step-by-step explanation:
Between the time lko woke up and lunchtime,the temperature rose by 11 degrees then by the time he went to bed the temperature dropped by 14 degrees
Missing details:
Write an addition expression for the temperature relative to when Iko woke up.
Answer:
[tex]T = x -3[/tex]
Step-by-step explanation:
Let the temperature when he woke up be x
When he woke up, it rises to 11 degrees.
This is represented as:
[tex]t_1 = 11[/tex]
At bedtime, it dropped by 14 degrees.
This gives
[tex]\triangle t = 11 - 14[/tex]
[tex]\triangle t = -3[/tex]
The relative change T is:
[tex]T =Initial\ Temp + Change[/tex]
[tex]T = x + \triangle t[/tex]
[tex]T = x -3[/tex]
What number divided by - 3 gives 12 as the result?
Answer:
If you use a search engine you will get the right answer.
Step-by-step explanation:
giving brainliest! (look in attached image)
Answer: 50$
Step-by-step explanation:
15:3=5$
25:5=5$
30:6=5$
60:12=5$
5$ x 10=5=50$
A person whose eyes are 5 feet above the ground is standing on the runway of an airport 100 feet from the control tower. That person spots one of the air traffic controller at the window of the 132 foot tall tower. What is the angle of elevation to the nearest tenth of a degree?
Answer:
132-5 therefore the height from the eyes to the window is 127
100 feet away from the base of the tower
This forms two legs of a triangle
trying to find the degrees of this triangle.
Since its the two legs, you can use tanx which = to opposite side/adjacent side
Therefore, it is tanx = 127/100
But you are looking for x so arctan(1.27)
Must use calculator to find x.
please help , thank you !!!!!!1
Please help!! Algebra!!
Answer:
Has a common ratio so it is a geometric sequence
Step-by-step explanation:
The common ratio of this geometric sequence is 1/2
Answer:
d a
noesun ome tgra niia lgberae
62. Which of the following polynomials cannot
be factored by factoring out a GCF?
a. 9x2 - 81x + 27
b. 15x2 + 3x
c. 2x + 4
d. 3x2 + 12x + 14
Step-by-step explanation:
d
joke mmmk,k
nm,iikkk,mk
The polynomial 3x²+12x+14 cannot be factored by factoring out a GCF. Therefore, option D is the correct answer.
What is factorization?The factorization method uses basic factorization formula to reduce any algebraic or quadratic equation into its simpler form, where the equations are represented as the product of factors instead of expanding the brackets. The factors of any equation can be an integer, a variable, or an algebraic expression itself.
Here,
a) 9x²-81x+27
In the given trinomial, in each term 9 is the common factor, so, the GCF of the trinomial is 9.
Thus, 9(x²-9x+3)
b) 15x²+3x
The factors of each terms of binomial is listed below
15x²=3×5×x×x
3x=3×x
So, the GCF is 3x
Now, 3x(5x+1)
c) 2x+4
The factors of each terms of binomial is listed below
2x=2×x
4=2×2
So, the GCF is 2
Now, 2(x+2)
d) 3x²+12x+14
In this trinomial there is no common term.
Therefore, option D is the correct answer.
To learn more about the factorization visit:
https://brainly.com/question/26923098.
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Explain how to solve me equation
C/6=9
Answer:
c=54
Step-by-step explanation:
6 times 9
2. Which is greater in each pair?
Explain how you know
3.45×10³ or 2x 10²
Yo plz help I have no clue what im doing
Answer:
hi
Step-by-step explanation:
Select the reason why these triangles are not similar . If they are not select Not similar
Answer:
hello!!
your answer will be option C.SSS
Step-by-step explanation:
hope it helps
Amil worked at a store for $11 per hour. He then bought a book for $9.75 and he was left with $64.50. How many hours did Amil work at the store? Write an equation to determine h, the number of hours that Amil babysat.
the backyard of a new home is shaped like a trapezoid with a height of 42 ft and bases of 88 ft and 111 ft. what is the cost of putting sod in the yard, if the landscaper charges $0.26 per square foot for sod
la semana pasada compramos berenjenas a un precio de 2,7soles/kg y patatas aun precio de 0,7soles/kg pagamdo por ellas en total de 15,1soles. sin embargo, esata semana hemos pagado 18 soles por una compra con la misma cantidad de estas hortalizas a un precio de 2soles por kilo de berenjenas y 1,2soles por kilo de patatas.calcula la cantidad de hortalizas que se compran
By rounding to one significant figure,estimate the answer to this question: 798 divided by 8 times 41 so I know it's 800 divided by 10=80 and 41 turns to 40 so it's 80x40 but no matter what I type in it's the wrong answer :/ just wanna make sure
Answer: Try this:
Step-by-step explanation:
798 rounded to one sig. fig. = 800.
8 is already just one sig. fig.
41 rounded to one sig fig. Is 40.
800/8x40
800/320 = 2.5.......
Rounded to one sig fig. =3
Or if you left the entire equation as is and just rounded the answer to 1 sig. fig.
798/(8x41) = 2.4329.......
rounded to one sig fig =2
Without knowing what specifically the question wants estimated to one significant figure, there could be multiple answers.
The estimate of the equation to one significant figure is 2.
What is a significant figure?Significant figures are the digits in a number that is significant and required to denote a value and also add to the correctness of that value.
The way we will solve this equation is to first determine the final value and then approximate it to 1 significant figure.
[tex]\mathbf{= \dfrac{798}{8 \times 41}}[/tex]
= 2.4329
≅ 2 (to one significant figure)
Learn more about significant figures here:
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find the volume of the cylinder please, I'll mark brainliest if you can help!