SDLC is: 1. A plan to outsource and insource an information system to meet the organization's information needs 2. An information system developed by hospital administrators 3. A way to deliver efficient information systems that fit with an organization's strategic business plan 4. A process for data collection

Explanation:

Software Development Life Cycle (SDLC) is a method used by the software industry for designing, producing and reviewing applications of high quality. The SDLC strives to create a high-quality product that meets or exceeds customer requirements, completes in time and estimates of costs.

A life cycle of software development is close to that of a life cycle of a project.  In fact, in many situations, SDLC is considered to be a phased project model that matches the organizational business plan, personnel, policy, and budgeting constraints of a huge scale systems project.

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.

answer(b); ; ; the quantitative or qualitative variable for which the experimenter wishes to determine how its value is affected by the explanatory variable;