Yaremy Yaremy
  • 01-09-2020
  • Mathematics
contestada

Given the function k(t)=2t−1: a. Evaluate k(2). b. Solve(k)=7.

Respuesta :

MrRoyal
MrRoyal MrRoyal
  • 07-09-2020

Answer:

[tex]k(2) = 3[/tex]

[tex]t = 4[/tex]

Step-by-step explanation:

Given

[tex]k(t) = 2t - 1[/tex]

Solving (1): k(2)

Take t as 2 such that t = 2

This gives

[tex]k(2) = 2 * 2 - 1[/tex]

[tex]k(2) = 4 - 1[/tex]

[tex]k(2) = 3[/tex]

Solving (2): k(t) = 7

Substitute 7 for k(t)

[tex]7 = 2t - 1[/tex]

Add 1 to both sides

[tex]7 + 1 = 2t - 1 + 1[/tex]

[tex]2t = 8[/tex]

Divide both sides by 2

[tex]t = \frac{8}{2}[/tex]

[tex]t = 4[/tex]

Answer Link

Otras preguntas

Craig just finished reading 120 pages of his history assignment if the assignment is 125 pages what percent has Craig read so far?
what are 2 important jobs of photosynthesis
All animals are _______. a. producers b. omnivores c. herbivores d. consumers
What was the major issue that kept Dred Scott from getting his freedom? Select one: a. He should have tried when he was in a free state. b. The Supreme Court ru
explain why so many different types of organisms exist on earth today
66 is what percent of 120?
3x + 2 >= 11 I need to understand how to do it on a number line.
9 is 60% of what number?
◦Why are coral communities/reefs important – include what are they indicators of? ◦ ◦What efforts are taking place world-wide to protect coral reefs from fu
how do you work out linear equation word problems