Răspuns:
Apartament cu 2 camere = 8
Apartament cu 3 camere = 12
Explicație pas cu pas:
Dat fiind :
Numărul total de camere = 64
Numărul de apartamente = 20
Fie numărul de apartamente cu 2 camere = x
Numărul de apartamente cu 4 camere = y
2x + 4y = 64 - - (1)
x + y = 20 .-- (2)
De la (2);
x = 20 - y
2 (20 - y) + 4y = 64
40 - 2y + 4y = 64
2y = 64 - 40
2y = 24
y = 12
x = 20 - y
x = 20 - 12
x = 8
Apartament cu 2 camere = 8
Apartament cu 3 camere = 12
The price of printing digital photos is $1.40 for 7 prints. If Louie wants to have 48 digital photos printed, what will be the cost?
Answer:
$9.60
Step-by-step explanation:
1.40=7
divide both by 7
0.2=1
multiply by 48
0.2 x 48=9.6
What is the slope-intercept form of 9x + 3y = 15?
A y= -3x + 5
B y= 3x - 5
C y= -3x - 5
D y= 3x + 5
Answer:
b) y= 3x - 5
Step-by-step explanation:
9x-15 ÷3 = 3x - 5
3y ÷ 3 = y
A healthy human heart beats about 1,533,000 times a year. A sparrow's heart beats about 241,776,000 times in a year. About how many times faster does the sparrow's heart beat compared to the human heart?
Answer:
About 158 times
Step-by-step explanation:
Represent the rate of human heart with H and sparrow's heart with S
[tex]H = 1,533,000\ times[/tex]
[tex]S = 241,776,000\ times[/tex]
Required
Determine how many times faster is S than H
To do this, we simply divide S by H i.e.
[tex]Number = \frac{S}{H}[/tex]
[tex]Number = \frac{241,776,000}{1,533,000}[/tex]
[tex]Number = 157.714285714[/tex]
[tex]Number = 158[/tex] --- approximated
Hence, the sparrow's heart beats about 158 times faster than the human hearts
The graph of a line contains point (3, 2) and has a slope of 4. What is the equation of the line?
A. x - 4y = 2
B. x - 4y = 10
C. 4x - y = 2
D. 4x - y = 10
Answer:C 4x-y=2
Step-by-step explanation:
The equation of the line that has a slope of 4 is 4x - y = 10.
Option D is the correct answer.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
Slope = 4.
The line contains (3, 2).
The equation of the line.
y = mx + c
m = 4
(3, 2) = (x, y)
2 = 4 x 3 + c
2 = 12 + c
c = 2 - 12
c = -10
Now,
y = 4x - 10
4x - y = 10
Thus,
The equation of the line is 4x - y = 10.
Learn more about equation of a line here:
https://brainly.com/question/23087740
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Help!!!!
Given log73≈0.5646 and log716≈1.4248, evaluate the expressions.
Answer:
a) 0.356
b) 1.1397
Step-by-step explanation:
a) log₇2
log(2) / log(7) 0.356b) log₇ (¹⁴⁷/₁₆)
log (¹⁴⁷/₁₆)log (7)
1.1397Allison wants to cut out a rectangle with an area of 54 inches. What are the
possible whole number lengths and So widths of the re
Answer:
1 and 54
2 and 27
3 and 18
6 and 9
Step-by-step explanation:
Answer:
Multiple Possibilities:
1 x 54
2 x 27
3 x 18
6 x 9
Step-by-step explanation:
What is the distance between -3 and 3 on a number line?
Answer:
6
Step-by-step explanation:
-3,-2,-1,0,1,2,3
1-2-3-4-5-6
What is 761,004 rounded to the nearest hundred thousand
Answer:
800000
Step-by-step explanation:
Answer:
♡ Hi darling!
~The answer is 800,000.
Here is some explanation on how to round numbers to the nearest hundred thousand easily.
You can just look at the next place value to the right (the thousandths this time). If it's 4 or less, just remove all the digits to the right. If it's 5 or greater, add 1 to the digit in the hundredths place, and then remove all the digits to the right. ♡
Hope this helps, have an amazing night/day and remember your loved! Make sure to take care of your mental health and eat food and drink water today.
(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
~ Clara
✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ
Step-by-step explanation:
Which of the following graphs below is the graph of a function?
(1)
(3)
(2)
(4)
The graph that represents a function is graph (1)
How to determine the graph?The attached graphs represent the given parameters
From the attached figure, we can see that there are four graphs
Each of the four graphs represented different functions
As a general rule,
A graph that represents a function must pass the vertical line test
The vertical line test is such that:
If a line is drawn from the x-axis, it must touch the curve not more than one times
The graph that passes this test is graph (1)
This is so because it is a quadratic graph
Hence, the function graph is (1)
Read more about graph s at
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heyy could you help me out
Answer:
the slope of the red line is [tex]\frac{1}{2}[/tex] or 0.5
Step-by-step explanation:
4x + 3
8x - 9
What is the answer
Answer:
Step-by-step explanation:
12x-6
HELP ASAP
In the solid figure below, what is the volume of the bottom section of the figure?
WILL GIVE BRAINLIST
Answer:
I think 48
Step-by-step explanation:
multiply the bottom numbers
Answer:
i think is 44
Step-by-step explanation:
part 7 math work 10th-grade work
Answer:
x>11 is the solution to both equations.
Step-by-step explanation:
I apologize for late response I've been busy lately. Anyways here ya go! :
From what I understand it wants us to solve "9x-4>95" so that's what I'll do.
add 4 to each side
9x>99
divide each side by 9
x>11 is the solution to 9x-4>95
For 4x+10>54
subtract 10 from each side
4x>44
divide each side by 4
x>11 is the solution to 4x+10>54
If P(A) = 0.5, P(B) = 0.4, and P(A or B) = 0.8, find P(A and B).
Answer:
P(A and B)=0.2
Step-by-step explanation:
P(A or B) represents mutually exclusive events, which mean they cannot occur at the same time. For example, you can't turn your head left and right at the same time. Their probabilities would be added as a result.
P(A and B) represents events that do occur at the same time, so the probabilities are multiplied. P(A and B)=P(A)*P(B)=0.5*0.4=0.2 or 20%
Which statement describes the relationship between x and y in these two equations?
y = 2x
y = x + 2
A.In y=2x the value of y is 2 more than the value of x, and in y=x+2 the value of y is twice the value of x.
B.In y=2x the value of y is twice the value of x, and in y=x+2 the value of y is 2 more than the value of x
C.In y=2x and in y=x+2, the value of y is twice the value of x.
D.In y=2x and in y=x+2, the value of y is 2 more than the value of x.
Answer:
The correct option is B.
Answer:
answer is definetly B
Step-by-step explanation:
PLEASE HELP ASAP:( i’ll mark brainlest
Answer:
D
Step-by-step explanation:
A carnival game awards a prize if Kasey can shoot a basket. The charge is $5.00 for the first shot, then $2.00 for each additional shot. Kasey needed 11 shots to win a prize. What is the total amount Kasey spent to win a prize? What is the first term? what is the common diference.
Answer:
its $25 if he completes all 11 shots
Answer:
its $25 if he completes all 11 shots
Step-by-step explanation:
Hi anyone know the answer to this? Ill give brainliest :(
I need help answering these algebra questions, please help me i will qive brainliest to who ever answers first and is correct
Answer:
x=5, y=-3, x=-4, y=9
Step-by-step explanation:
1. x=5, is a vertical line cutting the x axis at 5
2. y=-3 is a horizontal line cutting the y axis at -3
3. x= -4, is a vertical line cutting the x-axis at -4
4. y=9, is a horisontal line cutting the y-axis at 9
Hurry Pleasee!! Tamara either runs or walks the same route each day. Last month, she ran half of the days and walked the other days. Which graph best represents the distance she traveled each day?
Answer:
the correct answer is c
Step-by-step explanation:
Please help me with this question please!
Bob frosted 4 1/2 cakes in 3/4 of an hour. At what rate, in cakes per hour, did he frost the cakes
PLs help with this its urgent (due tomorrow)
Answer:
Step-by-step explanation:
we are given that 1 angle equals 27 and the other two are equal.
180-27=153. and the other two are equal so they each equal 76.5 (153 divided by 2) now since one of the angles is supplementary with angle x, they together must equal 180 so: 180-76.5=x, x=103.5
Help me plz I need help wit dis question
by using of formula A2 +B2 + 2AB
What is 2x^2+9x-18 in vertex form?
Complete the square:
2x² + 9x - 18
2(x² + 9/2 x) - 18
2(x² + 9/2 x + 81/16 - 81/16) - 18
2(x² + 2 (9/4) x + (9/4)²) - 81/8 - 18
2(x + 9/4)² - 225/8
If you're not familiar with the method, the idea is to get a quadratic from the standard form
ax² + bx + c
into its vertex form
a (x - h)² + k
where (h, k) is the vertex of the parabola associated with the quadratic.
Expand the vertex form to get
a (x² - 2xh + h²) + k
ax² - 2ahx + ah² + k
For the two forms to be equivalent, we must have
-2ah = b
ah² + k = c
which means
h = -b/(2a)
k = c - ah² = c - b²/(4a)
In this case, a = 2, b = 9, and c = -18, so
h = -9/(2 • 2) = -9/4
k = 18 - 9²/(4 • 2) = -225/8
how do I know what side lengths equal a right triangle?
Answer:
if both the shorter ends are as long as or longer than the longer end when combined.
Step-by-step explanation:
Two out of every 3 students in Mr. Pearson's ninth grade class recycle aluminum
cans. If 48 students recycle aluminum cans, how many students are in Mr.
Pearson's class? *
Answer:
72 students
Step-by-step explanation:
IF 2 out of 3 students recycle aluminum cans and 48 students recycle aluminum cans.
48 divided by 2 is 24
48 plus 24 is 72
(-4,19) and (8,-2) whats the slope intercept
Answer:
slope = -7/4
Step-by-step explanation:
Plug the points into this formula: [tex]\frac{y2 - y1}{x2 - x1}[/tex]
Plug in
[tex]\frac{-2 - 19}{8 - (-4)} \\\\\frac{-21}{12} = -7/4[/tex]
The simplest form is -7/4
Hope this helps ya! Keep smiling!
los miembros de un club social se pueden agrupar en sin que ninguno quede suelto, por parejas, por trios y por grupos de 7. ¿ cuantos miembros tiene el club, sabiendo que son mas de 80 pero menos de 90?
Answer:
El club tiene 84 miembros.
Step-by-step explanation:
El mínimo común múltiplo (mcm) es el número positivo más pequeño que es múltiplo de dos o más números. Es decir, el mínimo común múltiplo de dos números a y b es el número más pequeño que es múltiplo de a y múltiplo de b. Recordar que los múltiplos son el resultado de multiplicar un número por todos y cada uno de los números naturales.
Para calcular el mcm se descompone los números para escribirlos como un producto de números primos. Para descomponer un número se divide el número sucesivamente entre números primos hasta llegar a 1. La descomposición es el producto de las potencias de los números primos, siendo sus exponentes el número de veces que se ha dividido por dicho primo.
El mínimo común múltiplo se obtiene escogiendo todos los factores (comunes y no comunes), elevados a la máxima potencia. Es decir eliges todos los factores, pero los que se repitan serán elevados a la máxima potencia.
En este caso, los miembros de un club social se pueden agrupar, sin que ninguno quede suelto, por parejas, por tríos y por grupos de 7. Para calcular la cantidad de miembros que tiene el club, entonces debes calcular el mcm entre los números 2,3 y 7
No podemos descomponer los números como producto de primos porque ya son números primos., por lo que el mínimo común múltiplo es el producto de comunes y no comunes al mayor exponente:
mcm (2,3,7)= 2*3*7= 42
Pero sabes que los miembros son más de 80 pero menos de 90, por lo que calculas un múltiplo del mcm obtenido.
Múltiplo de 42= 2*42= 84
El club tiene 84 miembros.
find area and perimeter
Answer:
don't know area but the perimeter is 24.2 cm
Step-by-step explanation:
Someone please help me !!
Answer:
Slope: 6
Y-intercept: 4
Equation: y=6x+4
Step-by-step explanation:
For slope you do change in y over change in x so its 10-4/1-0 in this case which gets you 6/1 or 6 for your slope
It crosses the y-axis at (0,4) so your y-intercept is 4
The base equation is y=mx+b m is slope b is y-intercept so you plug in your values and get y=6x+4
