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ddd [48]
3 years ago
12

-9x-3y=-18 -3x+y=4 solve the system of equation

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0
Answer would be x = 1/3 and y = 5
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Negative 1 over 2 x + 3 = −x + 7
Wewaii [24]
According to Another brainly user, this is the answer

(-1)^2.x+3= -x+7


x+3= -x+7


2x=4


x=2

Hope it helps!!!
8 0
3 years ago
gretchen and Ezia received equal scores on a test made up of multiple choice questions and an essay. Gretchen got 18 multiple ch
timurjin [86]
The multiply choice were worth 4 points. 
Gretchen= 18x+19
Ezia= 15x+31

So basically you can enter any number. At first I picked 3 and then I did the math and I got 73 points for Gretchen and 76 points for Ezia. 

Then I pick four and then I got 91 points for them both. This is how I got the answer: 

18x+19=15x+31
18(4)+19=15(4)+31
72+19=60+31
91=91
5 0
4 years ago
Read 2 more answers
Add. −3 4/5+4 1/8 Enter your answer as a simplified fraction in the box.
GrogVix [38]

Answer:

13/40

Step-by-step explanation:

8 0
3 years ago
¿Cuál es el área de un rectángulo, sabiendo que su perímetro mide 24 cm y que su base es el triple de su altura?
Brrunno [24]

Answer:

El área del rectángulo es:

27 cm²

Step-by-step explanation:

Consideración:

La formula del perímetro de un rectángulo es:

p = 2(altura + base)

Planteamiento:

24 = 2(a+b)

b = 3a

a = longitud de la altura del rectángulo

b = longitud de la base del rectángulo

Desarrollo:

sustituyendo el valor de la segunda ecuación del planteamiento en la primer ecuación del planteamiento:

24 = 2(a + 3a)

24/2 = 4a

12 = 4a

a = 12/4

a = 3 cm

de la segunda ecuación del planteamiento:

b = 3a

b = 3*3

b = 9 cm

Comprobación:

de la primer ecuación del planteamiento:

24 = 2(3+9)

24 = 2*12

Respuesta:

la formula del área de un rectángulo es:

A = base * altura

A = 9cn * 3cm

A = 27cm²

5 0
3 years ago
Is 0.444444444444444... a rational number? explain
ehidna [41]
No, it is an irrational number. It repeats

No, it is an irrational number because it does not terminate/end
4 0
3 years ago
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