Answer:
El precio de cada falda es 25.
El precio de cada blusa es 40.
Step-by-step explanation:
Un sistema de ecuaciones es un conjunto de ecuaciones con las mismas incógnitas. Un sistema de ecuaciones lineales es un sistema de ecuaciones en el que cada ecuación es lineal.
Entonces, un sistema de ecuaciones lineales es un conjunto de dos o más ecuaciones de primer grado, en el cual se relacionan dos o más incógnitas.
Una solución de un sistema es una asignación de valores para las incógnitas que hace verdadera cada una de las ecuaciones. Es decir, resolver un sistema de ecuaciones consiste en encontrar el valor de cada incógnita para que se cumplan todas las ecuaciones del sistema.
En este caso, se debe plantear un sistema de ecuaciones, donde las variables son:
x= precio de una blusa.y= precio de una falda.Carmen compro 5 blusas y 4 faldas por 300. Esto se plantea mediante la expresión:
5*x + 4*y= 300
Gaby adquirió 2 blusas y 6 faldas por 230, expresado mediante la expresión:
2*x + 6*y=230
Entonces el sistema de ecuaciones a resolver es:
[tex]\left \{ {{5*x+4*y=300} \atop {2*x+6*y=230}} \right.[/tex]
En el método de sustitución se comienza con una ecuación en el sistema y se despeja una incógnita en términos de la otra incógnita. En este caso, despejando x de la primer ecuación se obtiene:
5*x= 300 - 4*y
[tex]x=\frac{300 - 4*y}{5}[/tex]
A continuación se sustituye la expresión hallada en la otra ecuación, para obtener una ecuación con una incógnita y, a continuación se despeja esa incógnita. Entonces:
[tex]2*\frac{300 - 4*y}{5} + 6*y= 230[/tex]
[tex]\frac{2}{5}*(300 - 4*y) + 6*y= 230[/tex]
[tex]\frac{2}{5}*300 - \frac{2}{5}*4*y + 6*y= 230[/tex]
[tex]120 - \frac{8}{5}*y + 6*y= 230[/tex]
[tex]- \frac{8}{5}*y + 6*y= 230-120[/tex]
[tex]\frac{22}{5}*y = 110[/tex]
y= 110 ÷ [tex]\frac{22}{5}[/tex]
y= 25
Entonces, el precio de cada falda es 25.
Por último, se sustituye el valor hallado en la expresión [tex]x=\frac{300 - 4*y}{5}[/tex] para despejar la incógnita restante:
[tex]x=\frac{300 - 4*25}{5}[/tex]
x= 40
Entonces, el precio de cada blusa es 40.
Draw an angle of -45 degrees in standard position . Then find the reference angle
Answer:
45°
Step-by-step explanation:
-45° would be 360°-45°=315°
Since 315° is in Quadrant IV, then its reference angle is 360°-315°=45°
So really, -45° is just 45° clockwise which is also our reference angle.
given the information in the diagram, which thermo best justifies why lines j and k must be parallel?
456 + 788 - 129 x 9 = ?
Also wanna converse? Lol
[tex]456+788-129\cdot \:9\\\\129\cdot \:9=1161\\\\456+788=1244\\\\1244-1161=83\\\\=83[/tex]
Solve forx: 102-1= 5x + 6
Answer:
x=19
Step-by-step explanation:
102-1= 5x + 6
101=5x+6
95=5x
x= 19
Factor this polynomial completely.
x²- 64
A. (x+8)(x-8)
B. (x+64)(x-64)
C. (x-8)(x-8)
D. (x-64)(x-64)
Answer:
B. (x+64)(x-64)
Step-by-step explanation:
x²- 64 = (x) ² - (8) ² =
(x+64)(x-64)
A prism with a square base has a volume of 96 ft3. The height of the unit is 6 feet.
A prism has a length of l, width of 2, and height of 6 feet.
Given what you know about the figure, complete these sentences.
The area of the square base is
feet2.
The length of the prism is
feet.
The width of the prism is
feet
Answer:
Its 16 4 4
Step-by-step explanation:
if we got the same question then this should be correct :)
PLEASE ANSWER ALL OF THESE 4 ME IM GIVING OUT BRAINLIEST AND 50 POINTS !!! D:
Answer and Step-by-step explanation:
1.
4 yards plus 8 yards equals 12 yards.
2 feet plus 2 feet equals 4 feet.
This totals to 12 yards and 4 feet.
2.
29 feet plus 5 feet equals 34 feet.
6 inches plus 5 inches equals 11 inches.
This totals to 34' 11".
3.
10:30AM
4.
0113
5.
1445
#teamtrees #PAW (Plant And Water)
Which transformation can NOT be used to prove that ABC is congruent to DEF?
Answer: it is dilation
Step-by-step explanation: i took the exam
Answer:dialation
Step-by-step explanation:
√320x^3 yz
simplify square roots
Answer:
[tex]8x\sqrt{5x}[/tex]yz
Step-by-step explanation:
before you plug in this answer, is your correct equation [tex]\sqrt{320x^3} yz[/tex] or [tex]\sqrt{320x^3yz}[/tex]
HELP DUE IN 15 MINS!
x = ??
Answer:
x = 7Step-by-step explanation:
Intersecting secants theorem:
8*(8 + 10) = 9*(9 + x)9x + 81 = 1449x = 63x = 7A circular ring has a circumference of 264 cm. What is the diameter of the ring
Answer:
84.03380995252074
Step-by-step explanation:
Diameter = C/π = 264 / π ≈ 264 / 3.141592653589793 ≈ 84.03380995252074 cm
The Hernandez family built a backyard patio. The width and length of the patio are whole numbers. What could be the dimensions of the patio?
Area = 150 square feet
Answer:
10 x 15 feet
Step-by-step explanation:
Possible answers
1 x 150
2 x 75
3 x 50
5 x 30
10 x 15 seems the most reasonable size for a patio
chelsea divided an apple into 8 equal pieces. she ate 5 pieces. she put the other 3 in thw fridge. what friction did chelsea eat?
Answer:
5/8
Step-by-step explanation:
eaten over by total id the answer
Answer:
5/8.
Step-by-step explanation:
how to find x in 11x+63=360
Answer:
you get 27
Step-by-step explanation:
subtract 63 from both sides
then divide by 11
Answer:
answer: 27
Step-by-step explanation:
To find this you just have to do 11 multiplied by x + 63 so 11 × 27 = 297 and 297 + 63 = 360 so x = 27 Hope that helps!
Sarah was colleting money for charity. By Sunday night she had collected 35% of her target amount. On Monday she collected another $40,which meant she had now collected 60% of her target amount. What was Sarah's target amount?
Answer:
350
Step-by-step explanation:
32. Last week, Jerry's house used 350 kilowatts of energy. If this week his
house uses 420 kilowatts of energy find the percentage of increase of
energy used,
Answer:
20%
Step-by-step explanation:
amount of increase
420 - 350 = 70
Percentage of increase
70/350 * 100
20%
Can someone plzzz helpp meeee
Answer:
1) Pelean
2) dormimos
3) vas
4) leo
Step-by-step explanation:
A cyclist rides his bike at 12 miles per hour. What is this speed per minute? How many miles will the cyclist travel in 20 minutes? Do not round you answers. Help thx
Answer:
In order to find the distance traveled in one minute, you have to divide the distance he can ride his bike in an hour by the number of minutes in a hour. 6/60= .1 mile per minute. If he rides his bike for five minutes, then you would multiply the number of minutes biked by the distance traveled in a minute. .1*5=.5 mile, or [tex]\frac{1}{2}[/tex] mile.
Step-by-step explanation:
The cyclist will travel 4 miles in 20 minutes.
What is Speed?Speed is the time rate at which an object is moving along a path,
To find the speed per minute, we can use the fact that there are 60 minutes in an hour. Therefore:
12 miles per hour = 12/60 miles per minute = 0.2 miles per minute
So the cyclist's speed is 0.2 miles per minute.
To find how many miles the cyclist will travel in 20 minutes, we can use the formula:
distance = rate x time
Plugging in the given values, we get:
distance = 0.2 miles per minute x 20 minutes
distance = 4 miles
Therefore, the cyclist will travel 4 miles in 20 minutes.
To learn more on Speed click:
https://brainly.com/question/28224010
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The diameter of a circle is 14 inches. Find the circumstance and area use 22/7
Will give brainlest
No links!!
Answer:
Circumference= 44 in
Area= 154 in²
Step-by-step explanation:
[tex]\boxed{circumference \: of \: circle = 2\pi r}[/tex]
Radius
= diameter ÷2
= 14 ÷2
= 7 in
Circumference of circle
[tex] = 2( \frac{22}{7} )(7)[/tex]
= 44 in
[tex]\boxed{area \: of \: circle = \pi {r}^{2} }[/tex]
Area of circle
[tex] = \frac{22}{7} ( {7}^{2} )[/tex]
= 154 in²
157×23 show work pls
Step-by-step explanation:
157×233611hope it helps
stay safe healthy and happy.Answer:3611
Step-by-step explanation:
157
x 23
do 157 x 3
add them one at a time. 157x carry the 3 and the two, oh and don’t forget to add 0 in the end after wards.
7x3:21 (carry the 2 leave the 1)
5x3: 17(leave 7, carry one)
3x1+1: 4
you get 471
now let’s do 2
do 157 x 2 to get 314
ok now add zero to the last one to get: 3140+471 and u get ur answer!
Every day after school, Kelly and Bella walk their dogs around the block. The block is 274 meters long and 80 meters wide. What is the perimeter of the bloc
Answer:
708meters
Step-by-step explanation:
Given data
Lenght = 274meters
Width= 80 meters
The expression for the perimeter is
P= 2L+2W
substitute
P= 2*274+ 2*80
P= 548+160
P= 708 meters
Hence the perimeter of the block is 708meters
Find the area of the circle to the nearest whole number, if necessary.
Answer:
Area of a Circle = πr²
R=Diameter/2
=21mm
=π(21)²
=1385.44mm²
To the nearest whole number
= 1385mm²
The answer is in mm². It may differ if the given answer is in m². You can get this by converting your radius to meters. This is done by dividing 21mm by 1000.
Bye!!!
Sheri has two identical bags of marbles. Each bag contains five red, two white, and three blue marbles. What is the probability of Sheri drawing a red marble from the first bag and a blue marble from the second bag?
Susan's balance in her checking account was $155.75.
She spent $89.43 at the grocery store, and $128.04 at
the mall. What is Susan's new checking account
balance after the purchases? Type in your answer
without the '$' sign.
which equation represents a line parallel to y= -2x+9
The equation of the parallel line is:
y = -2x + k
such that k ≠ 9.
How to represent the parallel line?
We know that two linear equations are parallel if they have the same slope and different y-intercept.
Then, a parallel line to:
y = -2x + 9
Would be something of the form:
y = -2x + k
such that k ≠ 9.
Then, for example:
y = -2x + 3
Is parallel to the given line.
If you want to learn more about parallel lines:
https://brainly.com/question/13763238
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Sam drew the triangle pictured below.
Which term best describes Sam's triangle?
obtuse
right
isosceles
equilateral?
Answer:
first one= obtuse
Step-by-step explanation:
have a good day!
PLEASE HELP..... PLEASE THX
Answer:
x = 30 and y = 50
Step-by-step explanation:
Given that,
The cost of 4 shirts and 1 pair of pants is $170 and the cost of 5 shirts and 2 pair of pants is $250.
Let the cost of 1 shirt is x and that of 1 pant is y.
So,
4x+y=170 .....(1)
5x+2y = 250 .....(2)
Multiply equation (1) by 2.
8x+2y=340 .......(3)
Subtract equation (2) from (3).
8x+2y-(5x+2y)=340-250
3x = 90
x = 30
Put the value of x in equation (1).
4(30)+y=170
120+y=170
y = 170-120
y = 50
Hence, the value of x is 30 and that of y is 50.
Is this correct????????
Answer:
ummm yes
Step-by-step explanation:
Solve for the missing value in the right triangle. Round answer to the tenths place.
4
X
410
B
A
Answer:
Step-by-step explanation:
Determine if the following relation is a function or not