jay47374 jay47374

04-06-2019
Mathematics

contestada

Solve by extracting roots. Round your answers to two decimal places.

5a² - 85 = 2.2a² - 30

a =

Respuesta :

KAGSCoco KAGSCoco

04-06-2019

2.8a^2=55
a^2=55/2.8
a= square root of 55/2.8

Answer Link

Shin2112 Shin2112

04-06-2019

Answer:

a = 2.62 or - 2.62 (2 d.p.)

Step-by-step explanation:

5a² - 2.2 a² = 85 - 30

2.8 a² = 55

a² = 55/2.8

a = +- sqroot(55/8)

a= 2.6220221204 or - 2.6220221204

a = 2.62 or - 2.62 (2 d.p.)

Answer Link

Otras preguntas

Why does hot water clean better than cold?

Which equations contain the point (0.5, –6.75). Check all that apply. 2x + 4y = –26 y = x – 7.5 2y = x + 13 y = 0.5x – 7

Solve this question with the elimination method X - 2y = 4 Y = x- 2

A pizza restaurant sells containers of juice that it marks up 75 percent above its wholesale cost. If the restaurant marks up each container by $.90, how much d

Ms. long is a first grade teacher and uses cooperative learning in her classroom. in creating groups of students she will equally distribute high achieving, mod

How do you find theoretical yield?

As the total resistance of a circuit increases, so does current. True False

Find 6 irrational no. Between 3 and 4

A cell that neither gains nor loses water when it is immersed in a solution must be

You have to make a factor tree