Una bella bruna sta riflettendo sulla soluzione di un complicato problema analitico. Le formule matematiche sono scritte sulla lavagna. Parete di cemento . - Foto e immagini stock

Smiling lady with red hair standing near blackboard with formulas in classroom. Concept of higher education and exact sciences.

Portrait of a young woman with long dark hair wearing a red dress and holding a planner and a pen. Chalkboard background with formulas on it.

Portrait of a smiling blond woman standing with crossed arms near a blackboard covered with formulas.

Girl of school age in red glasses sitting at table and typing on keyboard. Little school genius

Girl of school age in red glasses sitting at table and typing on keyboard. Little school genius

Portrait of a serious woman with braided hair standing with crossed arms near a blackboard with math formulas written on it.

Young girl with hands crossed standing at blackboard, many formulas and geometry sketches on it. Concept of education.

Thoughtful teen girl in glasses holding copybook standing near white wall with formulas written on it. Concept of education and science. Toned image double exposure

Young lady is pondering about complicated math problem. Formulas and graphs are drawn on the green chalkboard.

A beautiful lady is dreaming about graduation. Math formulas, an arrow, geometric figures are drawn on the black chalkboard.

Portrait of African American woman solving a difficult task standing near blackboard with formulas. Concept of science. Mock up

Pensive young woman in gray sweater with notebook standing near gray wall with formulas on it. Concept of education and science.

A young blonde girl standing and holding books, blackboard with small signs and dawings at the background, a concept of studying and knowledge aquisition

Full length of nice lady who holds black folder and stands in front of the green chalkboard, which is full of math formulas.

Portrait of a beautiful young businesswoman wearing a white shirt and a skirt and thinking. She is looking upwards. A blackboard with formulas on it

Beautiful blonde business woman is holding a black document case. Drawn mathematics equations and formulas on the chalk wall.