What are the variance (to 2 decimals) and standard deviation (to 4 decimals) for the number of these tweets with no reaction?

Using FOIL method. Multiply the terms. (X^2 -7)(x^2 -4) A 67 kg person climbs up a uniform 12 kg ladder. The ladder is 5 m long; its lower end rests on a rough horizontal floor (staticfriction coefficient 0.39) while its upper end rests against a frictionless vertical wall. The angle between the ladder and the horizontal is 43.Let d denote the climbing persons distance from the bottom of the ladder (see the above diagram). When the person climbs too far (d > dmax), the ladder slips and falls down (kaboom!). Calculate the maximal distance dmax the person will reach before the ladder slips. Theacceleration of gravity is 9.8 m/s*s. Answer in two decimal places max. Lydia loves playing with animals. She is good at math and has taken several business classes that she enjoyed. Which career would be the best match for Lydia? When Salina was a young girl, a dog viciously attacked her as she was walking along a white picket fence. Since then, she displays intense fear of white picket fences. Salina is demonstrating:________.1. a descriminative stimulus2. superstitious behavior3. stimulus descrimination4. a phobia5. spontaneous recovery The Emperor is Chief of State; Prime Minister is the Head of Government;Parliament chooses the Prime Minister; a constitutional monarchy Whichcountry's government is being described by these points? how mant times does the haert beat i a minute Mary mixes white paint and blue paint in the ratio 2:3She makes a total of 20 litres of paint.How much more blue paint does she need to add to the mixture so that the ratio of white paint to blue paint becomes 1:7? John is saving $6 a week. He has already saved $28. How many weeks will it take John to reach his goal of $100? Which fraction is equivalent to 68? 3) Which of the following words best describethe climate of tropical rainforests biomes?a. Wetb. Mildc. Hotd. Dry The sum of two numbers is 47 and the difference is 19. What are the numbers? A rectangular prism has a length of 4 1/2, a width of 4 1/2 and a height of 6. Sally has a storage container for the prism that has A volume of 143 cubic. What is the difference between the volume of the prism and the volume of the storage container What are scientist doing to Pork to make it a GMO? Given a circle U which has a center at coordinates (1,3) and a point on its circumference at (2, 2), what is the area of the circle? Re-word please, thank you! which test result indicated a chemical change has taken place? All forms of communication have a(n) __built into them, How late to practice did William show up to practice? Which was the capital city of an Allied power during World War II ? "Sort the following objects as part of the system or not."An 80-kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horizontally at 15 m/s . How fast will he be moving backward just after releasing the ball?