katehoward1 katehoward1

01-02-2016
Mathematics

contestada

If x=4, calculate the value of: x2 +2x

Respuesta :

taskmasters taskmasters

01-02-2016

If x = 4

x² + 2x = 24

Substitute x by its value

4² + 2(4)
16 + 8 = 24

Answer Link

01-02-2016

We simply need to plug in x = 4 into x² + 2x

So plugging in x = 4, we get:

4² + 2(4)

Simplifying it, we get:

16 + 2(4)
16 + 8
24

When x = 4, x² + 2x will equal 24.

Answer Link

Otras preguntas

90 is what percent of 95

The two divisions of the ANS have antagonistic effects on each of the following EXCEPT: A. gastrointestinal peristalsis B. the diameter of the blood vessels in

Which Expressions Are Equivalent to 4(3 + 5) - 3 x 9²? Select (TWO) correct answers. A. 12 + 20 - 243 B. 14 • 81 C. 17 - (27)² D. 4(8) - 3 X 81 E. 12 + 2

Balance the following reaction under acidic conditions. Cr2O7 2- + Mo → CrO2 - + MoO+

Betty (mass 40 kg), standing on slippery ice, catches her leaping dog (mass 15 kg) moving horizontally at 3 m/s. what speed to they move after she catches her d

Which type of troponin is our biggest MI indicator? A) Troponin C B) Troponin I C) Troponin T D) Troponin M

is the established of a national bank constitutional why or why not

HURRY!!! Choose all sets of side lengths of similar triangles to a triangle with side lengths of 3, 4, and 8 units.

What is the base or root of the word discontinued

What is immunity/resistance?a) The body's ability to fight off infectionsb) The response of an organism to a stimulusc) The inability of a virus to infect a hos