jay47374 jay47374

04-06-2019
Mathematics

contestada

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

5a² - 85 = 2.2a² - 30

Respuesta :

Desmariesin Desmariesin

04-06-2019

Answer:

2.8a = 7.4

Step-by-step explanation:

5a² - 85 = 2.2a² - 30

+ 85 = + 85

5a² = 2.2a² +55

- 2.2a² = -2.2a²

2.8a² = 55

√2.8a² = √55

2.8a = 7.4

Answer Link

Otras preguntas

At the ball game, 65% of the fans waved pom-poms. If 133 fans did not wave pom-poms, how many fans were there in all?

PLZ ANSWER THIS QUESTION!!!!

Help pls!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The area of a circle is 64 pi inches ^2 What is the circumference in inches expense your answer in terms of pie

60 POINTS!!!! PLS ACTUALLY HELP!!!!! Х O x = [?] Enter the number that belongs in the green box.

Multiply. −4i(2−i) Enter your answer in the box.

5 t-shirts and a hat costs £62.00 2 t-shirts and a hat costs £29.00. How much does a t-shirt cost? How much does a hat cost?

I need help- Like alot of help-

WHAT IS THE ANSWER PLIS HELP MEEEE 20 POINTS

4. Consider the following reaction: A student performs a neutralization reaction at 298 K according to the following reaction: NaHCO3 (8) + HCH,O2 (aq) → H20 (1