Which statement about 4x2 + 19x - 5 is true?
one of the factors is (x – 4).
one of the factors is (4x + 1)
one of the factors is (4x - 5).
one of the factors is (x + 5).

One of the factors is (x + 5)

Step-by-step explanation:

Given quadratic expression is \[4x^{2}+19x-5\]

This can be rewritten as \[4x^{2}+20x-x-5\]

This can be further expressed as \[4x(x+5)-1(x+5)\]

Expressing this is a product of factors:

\[(4x-1)*(x+5)\]

So the factors of the given expression are (4x-1) and ( x+5).

Among the given options,option D , namely, One of the factors is (x + 5) is the correct option.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

its an acute right triangle

step-by-step explanation: