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

Find a. Round to the nearest tenth: 2 cm 150 105 a = [? ]cm Law of Sines: sin A sin B sin C b

Define initiative and effort

In the term myoparesis the suffix- paresis means what

How has the single-story narrative of Columbus Day shaped the ideological viewpoint of settler colonialism in the United States?

Why would a line graph be better to show the relationship between predator and prey birds in an ecosystem than a circle graph? A. A circle graph would be better

You were looking at your power bill for the month, you pay 12 cents per kilowatt-hour. Your power bill came out to $99.89 how many KWH of energy were used in yo

18. Prime numbers are closed under subtraction. True or false

Look at the image, read, and select the correct option. Image 01, Clock showing two ten. Image 02, Clock showing two forty. Image 03, Clock showing seven twenty

To conjugate a verb in the future you remove the endings ar, -er, -ir and add the endings of the future. BRAINLY 10 POINTS

please help help help