ineedhelp201833 ineedhelp201833

03-12-2018
Mathematics

contestada

Evaluate the expression x^2+8x-4 if x=3

Respuesta :

rthanvi088 rthanvi088

03-12-2018

Answer:

29

Step-by-step explanation:

first sub in 3 wherever x is shown

(3)^2+8(3)-4 the use bedmas (brackets,exponents,division,multiplication,addition,subtraction)

solve brakets first

(3)^2=9

8(3)=24

rewrite equation ; 9+24-4=29

Answer Link

Otras preguntas

What impact did the spanish have on south America ?

What is claymation? O A. Animation in which artists draw objects that look like clay B. Stop-motion animation created with clay and photographs c. Traditional a

Explain how Rutherfords' gold foil experiment explains how this experiment confirms the nuclear model of the atom and the idea that most of the atom is empty sp

is -2.875 > -2 7/8?

A student monitored the reaction rate of a 0.600M sucrose solution, at 25 oC, and determined that the reaction is first order with respect to sucrose. If at 25.

The mass of Jupiter is approximately 1.9x10^27 kilograms, while the mass of the earth is approximately 5.972x10^24 kilograms. The mass of Jupiter is approximate

If Nominal GDP is 5.2% and Inflation is 3.2%, Real GDP is A-8.4% B-3.2% C- 5.2% D-2.0%

How did the second industrial revolution help immigrants to be

Rob changes his car every year and prefers a car that is always under warranty

3. A drill spins with a frequency of 1200 RPM (revolutions per minute). What is itsfrequency in RPS (revolutions per second)?