RanyaZ621711 RanyaZ621711
  • 25-10-2022
  • Mathematics
contestada

Which of these shows the result of using the first equation to substitute for y?

Which of these shows the result of using the first equation to substitute for y class=

Respuesta :

AyishaH105645 AyishaH105645
  • 25-10-2022

D) 9x=18

Explanation

given

[tex]\begin{gathered} y=3x\Rightarrow equation(1) \\ 3x+2y=18\Rightarrow equation(2) \end{gathered}[/tex]

Step 1

substitute the y value from equation (1) into equation(2)

so

[tex]\begin{gathered} 3x+2y=18\operatorname{\Rightarrow}equat\imaginaryI on(2) \\ replace \\ 3x+2(3x)=18 \\ 3x+6x=18 \\ add\text{ like terms } \\ 9x=18 \end{gathered}[/tex]

therefore, the answer is

D) 9x=18

I hope this helps you

Answer Link

Otras preguntas

A 12.65 g sample of a radioactive substance is allowed to decay for 17.22 min. At that time, the sample weighed 3.115 g. What is the half-life for this substanc
What are the 3 stages of labor and what happens in each?
A concave lens forms a virtual image 0.4 times the size of the object. The distance between object and image is 5.3 cm. Find the focal length of the lens. Answe
Hey can someone help stats
6 facts and opinions about cartoons​
Introduction to Biology1. Match the property of life to the correction descriptiona. How organisms are organizedb. Ability to maintain constant internal conditi
what does density have to do with the cycling of matter in earths interior
please help me with this question!! it’s really hard and i can’t seem to understand it and i need a quick answer, some one pls help!!!!
Should the Congress pass legislation to restrict vaping among people under the age of 21?
Which ordered pair is on the inverse of f(x)?