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
stealth61 [152]
2 years ago
15

Calcula 2 números tales que la suma del primero más el triple del segundo sea 85 y la diferencia entre el cuadruple del primero

y el doble del segundo sea 102...
Mathematics
1 answer:
vekshin12 years ago
3 0
Calcula dos números tales que la suma del primero mas el triple del segundo sea 85 y que la diferencia entre el cuádruple del primero y el doble del segundo sea 102

Sea el primer número = T
Sea el segundo número = U

Las ecuaciones según el enunciado son:
1) T + 3U = 85
2) 4T - 2U = 102

Resolvemos por el MÉTODO DE IGUALACIÓN.
-Despejamos T en las dos ecuaciones.
T + 3U = 85 4T - 2U = 102
T = 85 - 3U 4T = 102 + 2U
T = (85 - 3U)/1 T = (102 + 2U)/4

Igualamos las dos ecuaciones entre sí.
(85 - 3U)/1 = (102 + 2U)/4

Multiplicamos las ecuaciones en cruz.
4 (85 - 3u) = 1 (102 + 2U)
340 - 12U = 102 + 2U
- 12U - 2U = 102 - 340
- 14U = - 238
U = - 238/-14
U = 17

El valor de U lo reemplazamos en uno de los despeje de T para hallar el valor de la misma.
T = (85 - 3U)/1
T = (85 - 3 (17)/1
T = (85 - 51)/1
T = 34/1
T = 34

Rpt. Los números son: 34 y 17



COMPROBAMOS LA SOLUCIÓN.
T + 3U = 85
34 + 3 (17) = 85
34 + 51 = 85
85 = 85



4T - 2U = 102
4 (34) - 2 (17) = 102
136 - 34 = 102
102 = 102

LISTO!
You might be interested in
How would you factor this 2x^3 + x^2 + 5x + 6. The factored form should not have any radicals or imaginary numbers.
Serhud [2]

Answer:

(x+1)(2x2−x+6)

Step-by-step explanation:

5 0
2 years ago
A city planner is mapping out some new features for a triangular park. She sketches the park on grid paper. The coordinates of t
valentinak56 [21]

Answer:

The area of the triangle enclosed by the three points

A(1,1), B(1,4) and C(-3,4) in this question will be given by

|Ax ( By − Cy)+ Bx(Cy−Ay)+ Cx(Ay− By) |/2

=|1(4-4)+1(4-1)+-3(1-4)|/2=10/5= 5 sq. units

5 0
2 years ago
Read 2 more answers
(3x5)-1 expression word
pshichka [43]

Answer:

Subtract the result of three times five with 1.

Step-by-step explanation:

(3 \times 5)-1

15-1

14

Subtract the result of three times five with 1.

4 0
3 years ago
3/5 =2/3t what is t PLZ HELP
Brut [27]
3/5 = (2/3)t
cross multiply
9/10 = t
4 0
3 years ago
Read 2 more answers
Divide.<br> 3 5/9 ÷ -2 2/3<br> Enter your answer as a mixed number, in simplified form, in the box.
kvv77 [185]
-1 and 1/3 because you convert to a regular fraction and get (32/9)/(-8/3), then you flip the fraction and multiply
3 0
3 years ago
Other questions:
  • 3. Carrie and Juanita are saving up to start a slime business. They need at least $125 to cover their start up costs. To earn th
    7·1 answer
  • (0, -32) and (-12, -20)?<br> What is the slope of it?
    6·1 answer
  • Find the number of degrees in the third angle which is X of the triangle 42 and 100
    13·1 answer
  • What is the domain of the square root function graphed below?
    5·1 answer
  • Simplify the expression.<br> -10a -<br> 3a
    13·1 answer
  • Find the lateral surface area of this
    5·2 answers
  • a recipe calls for 2/3 of a cup of milk for 12 cookies how many cups of milk are needed to make 180 cookies ​
    7·1 answer
  • Help with my math problem please! ;(
    15·1 answer
  • Brendan earns 1,826 each month.How much money does he earn in a year??
    7·2 answers
  • 21 plus 22 plus 9 plus 10 times zero
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!