11014515 11014515

24-11-2022
Mathematics

contestada

If $2x-y=7,$ what is the value of $7-8x+4y$?

Respuesta :

Medunno13 Medunno13

24-11-2022

Answer:

[tex]7-8x+4y=-21[/tex]

Step-by-step explanation:

[tex]2x-y=7 \implies 8x-4y=28 \\ \\ \implies 7-8x+4y=7-28=-21[/tex]

Answer Link

Otras preguntas

Hades is the location of eternal judgment. a) True b) False

8. Identifico cuál de los siguientes significados corresponde a la palabra spot en el contexto del reportaje y explico en qué pistas me basé para escoger esa de

Are the triangles congruent? If so, state how.

Part A What are the two main ways the author develops information * 4 points about Susan Butcher in the article? with an extended explanation of experiences But

Why are figures removed from the calculation for values that are known in more detail? E.g. if you want to calculate the number of moles in 75.0 g H2 molecules.

Lane AHEAD Reserved for Bus/Taxis A. Lane ahead is reserved for bicycles. B. Lane ahead is for bus and taxi use only when lights flash. C. Lane ahead is closed

Lanyon suffers a shock. What happens to him?A. He becomes HydeB. He diesC. He goes insaneD. He becomes Jekyll

Describe the process when repeating a phone number to remember it as you look for your smartphone.

A customer is likely to experience the greatest purchasing power risk with which of the following investments?A) Convertible preferred stock.B) Short-term Treas

setting aside a marsh as a wildlife refuge is an example of