I(t) models the daily solar irradiance, measured in \dfrac{\text{kWh}}{\text{m}^2\text{ -day}} m 2 -day kWh ​ start fraction, start text, k, W, h, end text, divided by, start text, m, end text, squared, start text, negative, d, a, y, end text, end fraction, on a farm, t days after the summer solstice. Here, t is entered in radians. I(t) = 1.5cos( 365 2π ​ t)+4.3I, What is the second time after the summer solstice that the solar irradiance is 5.2 \dfrac{\text{kWh}}{\text{m}^2\text{ -day}}5.2 m 2 -day kWh ​ 5, point, 2, start fraction, start text, k, W, h, end text, divided by, start text, m, end text, squared, start text, negative, d, a, y, end text, end fraction? Round your final answer to the nearest whole day.

step-by-step explanation:

the true ones are a b and d

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

just took the test and my answers down below!

step-by-step explanation:

check the pic :