angel12322 angel12322

01-10-2017
Mathematics

contestada

if (2x-3) and (x+5) are multiplied to form the trinomial ax^2 +bx+c, what is the value of b

Respuesta :

texaschic101 texaschic101

01-10-2017

(x + 5)(2x - 3) =
x(2x - 3) + 5(2x - 3) =
2x^2 - 3x + 10x - 15 =
2x^2 + 7x - 15........so b = 7 <==

Answer Link

Аноним Аноним

01-10-2017

b will be -3 + 2*5 = 7

Answer Link

Otras preguntas

What is the volume of a rectangular box that has base area of 75 square inches and a height of 20 inches

a rectangular field with a area of 8000m2 is enclosed by 400m of fencing. determine dimensions to nearest tenth of a metre

Which of the following stages of the cell cycle occurs immediately prior to mitosis? (A) G1 (B) G2 (C) S (D) M (E) cytokinesis Can you please explain with some

Cellular respiration involves a series of chemical reactions. Which of the following is a primary way that enzymes affect these reactions? A. They decrease the

Tatum weighs 47.39 kilograms.What is is her mass rounded to the nearest whole number?A.50 KilogramsB.48 KilogramsC.47.4 KilogramsD.47 Kilograms

What is a unit of area with dimensions 1unit x 1unit x 1unit= ?

What is NAFTA? What countries are involved?

How many quarts in 24 pints?

Which of the following factors does not favor a change in gene frequency and, therefore, evolution? (A) large populations (B) mutations (C) emigration (D) genet

You hear a thunder 3 seconds after you see lightning. How far away is the storm?