Over a million students use our free study notes to help them with their homework
4(5-X^2)/(X^2+5)^2
Speed is equal to the distance divided by the time, so this will be our calculation. In the question, the distance is given in miles and the time in hours, so the speed should be in miles per hour...
Quadratic formula. x=(b+-SQRT(b^2-4ac))/2a substitute. x=(10+-SQRT(100-416))/21 simplify. x=5+2SQRT(19)/2ORx=5-2SQRT(19)/2
< RIght angled triangle with sides of length 8mm, 5mm and h. Unknown angle z denoted.Use SOH CAH TOA in trigonometry to label the triangle accordingly, then find that 'tan' is to be used. Finally, use ...
Kate's age = xJames age = x + 7 Sam's age = 2x + 14sum of age = 77 Therefore x + x+7 + 2x+14 = 774x + 21 = 77 4x = 56 x= 14 ratio = 14:21:42
←
559
560
561
562
563
→
Internet Safety
Payment Security
Cyber
Essentials
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors for 300 subjects
35,000 worksheets, games, and lesson plans
Adaptive learning for English vocabulary
Fast and accurate language certification
Essential reference for synonyms and antonyms
Comprehensive resource for word definitions and usage
Spanish-English dictionary, translator, and learning resources
French-English dictionary, translator, and learning
Diccionario ingles-espanol, traductor y sitio de apremdizaje
Fun educational games for kids
