1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AlekseyPX
3 years ago
14

3x – 4y = 36 5x+2y = 8 What value does he correctly determine for x? Enter you answer in the box.

Mathematics
2 answers:
marshall27 [118]3 years ago
3 0

here is your answer

x=4 and y=8

kipiarov [429]3 years ago
3 0

Answer:

x = 4

Step-by-step explanation:

3x - 4y = 36

5x + 2y = 8

solve for y:

5x + 2y = 8

-5x           -5x

2y = 8 - 5x

/2        /2

y = 4 - 5/2x

substitute

3x - 4(y) = 36

3x - 4(4 - 5/2x) = 36

3x - 16 + 20/2x = 36

3x - 16 + 10x = 36

13x - 16 = 36

      +16   +16

13x = 52

/13     /13

x = 4

You might be interested in
Expresiones algebraicas. 1- Escribe en el lenguaje algebraico las siguientes expresiones del lenguaje común. Dos terceras partes
Alex73 [517]

Answer:

Dos terceras partes de un número: \frac{2}{3}*x

Un número menos su doble: x - 2*x

La suma de los cuadrados de tres números: x² + y² + z²

El producto de dos números divididos por un tercer número: \frac{x*y}{z}

La suma de tres números consecutivos: x+(x+1)+(x+2)

Step-by-step explanation:

Una expresión algebraica es un conjunto de números y letras que se combinan con los signos de las operaciones aritméticas. En otras palabras, el lenguaje algebraico es el que utiliza letras, símbolos y números para expresar en forma breve y concisa enunciados en los que se pide realizar operaciones matemáticas.

Entonces, siendo x, y, z números al cual desear aplicar una operación aritmética, y teniendo en cuenta que:

  • dos terceras partes= \frac{2}{3}
  • doble: se calcula multiplicando el número por 2
  • Cuadrado de un número n: se representa como n², y se calcula multiplicando el número por sí mismo.
  • Producto: hace referencia a la multiplicación.
  • Un número consecutivo se obtiene sumando una unidad al anterior.

las siguientes expresiones escritas en lenguaje algebraica serán:

<u><em>Dos terceras partes de un número: </em></u>\frac{2}{3}*x<u><em></em></u>

<u><em>Un número menos su doble: x - 2*x</em></u>

<u><em>La suma de los cuadrados de tres números: x² + y² + z²</em></u>

<u><em>El producto de dos números divididos por un tercer número: </em></u>\frac{x*y}{z}<u><em></em></u>

<u><em>La suma de tres números consecutivos: es la suma del primer número, más el segundo que seria el primero más uno, más el tercero que seria el primero más 2. Esto es: x+(x+1)+(x+2)</em></u>

4 0
3 years ago
Suppose the average length of a fish caught in Lake Springfield is 10.6 in with standard deviation 4.1 in. Assuming lengths of f
sergejj [24]

Answer:

0.035547

Step-by-step explanation:

We would be using z score formula to solve for this question

The formula for calculating a z-score is is

z = (x-μ)/σ

where x is the raw score = 18 in

μ is the population mean = 10.6 in

σ is the population standard deviation = 4.1 in

z score = 18 - 10.6/ 4.1

z score = 7.4 /4.1

z score = 1.80488

Using the normal distribution table to find the probability for the z score of 1.80488

Probability value from Z-Table:

P(z = 1.80488) = 0.96445

The probability that a fish caught there will be longer than 18 in is calculated as:

P(x>18) = 1 - P(z = 1.80488)

= 1 - 0.96445

= 0.035547

4 0
3 years ago
In 448244 how is the relationship between the first pair of 4s the same as the relationship between the second pair of 4s
tensa zangetsu [6.8K]
The the relationship between first pair of 4s have the same relationship as the one between the second pair of 4s because the in the first pair, the 4 in the ones place is worth 4 and the 4 in the tens place is worth 40. In the second pair of 4s, the 4 in the thousands place is worth 4,000 and the 4 in the ten-thousands place is worth 40,000. Hope this helps!
8 0
4 years ago
Read 2 more answers
Question attached below
Elodia [21]

Answer:

You are rocking this... This is correct! :D

Step-by-step explanation:

Please give me brainliest :)

6 0
3 years ago
Read 2 more answers
A cannery processed 605 pounds of strawberries in 3.5 hours. The cannnery processed 2100 pounds in 10 hours. Write a linear equa
Lina20 [59]
605 pounds in 3.5 hours = 605/3.5 = 172.86 lbs per hour
2100 pounds in 10 hours = 2100/10 = 210 lbs per hour

1st point (3.5,605)
2nd point (10, 2100)

slope = (2100 - 605)/10-3.5 = 1495/6.5 = 230

y = mx + b
y = 230x + b

605 = 230(3.5) + b
605 = 805 + b
605 = 805 - 200

y = 230x - 200
y = 230(12) - 200
y = 2,760 - 200
y = 2,560

2,560 lbs of strawberries in 12 hours.
6 0
4 years ago
Other questions:
  • The type and amount of auto insurance coverage a car owner buys is ____.
    11·1 answer
  • 11. Braydon buys a new CD and pays 8% sales tax. If the sales tax is $1.20, calculate
    6·1 answer
  • A telephone company offers a monthly cellular phone plan for $ 34.99. It includes 350 anytime minutes plus $0.25 per minute for
    6·1 answer
  • Simplify the following expression. 2h (-7h^2-3h)
    5·1 answer
  • What is 224÷34 +3? what would that equal and why.
    8·2 answers
  • URGENT NEED HELP 10pts
    9·2 answers
  • Identify the transformation that does NOT map the figure onto itself.<br> es
    13·1 answer
  • 25x(3)-2x (6)3<br>52x115)-4 x(18)-Y​
    12·1 answer
  • Which of the following describes the data set?
    13·1 answer
  • Which would result in an integer
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!