elliflinchum elliflinchum
  • 03-12-2019
  • Mathematics
contestada

Look at this system of equations.
2x +5 =9.5
3x + 5y =10.5
What is the value of x+y

Respuesta :

kkkk1313 kkkk1313
  • 03-12-2019

Answer:

x = 2.25 y = 0.75

Step-by-step explanation:

2x = 9.5- 5

2x = 4.5

x = 4.5 ÷ 2

x = 2.25

know we now what is x so in the second one we evaluate x

3(2.25) + 5y = 10.5

6.75 + 5y = 10.5

5y = 10.5- 6.75

5y = 3.75

y = 3.75 ÷ 5

y = 0.75

that's it !

if you want to check your answer you can evaluate x and y so it will be like

2×2.25 + 5

= 4.5 + 5 = 9.5

and

3× 2.25 +5×0.75

= 6.75 + 3.75 = 10.5

Answer Link

Otras preguntas

What is the meaning of the term diffusion? 1. Transport of materials or molecules small enough to cross through pores in a membrane 2. Transport across a memb
Si no tuvieras miedo al fracaso que harías?
How would cellular respiration be impacted in the absence of photosynthesis? Only aerobic respiration would take place. Only anaerobic respiration would take
Use the diagram to the right. Is the statement true? <5 and <1 are complementary
712.9 dived by =71.29
explain what a forest looks like to someone who cant see (i need atleast 100 words) (this is due in 30mins..) (ill give you brainlest)
I need help fast!!!!!!!!!!!! Pls what is 1 + 7 i cant figure it out
For which pairs of functions is (f•g)(x) = x? fx)=x^2 and g(x)= 1/x f{x) = 2/x and g(x) = 2/x f(x)= x-2/3 and g(x) = 2-3/x f(x) = 1/2x - 2 and g(x) = 1/2x+ 2
HELP PLEASE ILL GIVE YOU 15 POINTS THANK YOU
16-8+4 ? For expression