Keiko is 12 years old and has begun an aerobics class. She wants to find out what her target heart rate range should be. What would you tell her to do?

what is 0.4 + (-1/10)= 2x+3yhelp me please The table below shows the distribution of students by age in a high schoolwith 1500 students. What is the probability that a randomly chosen student is14 years old?Age13, 14, 15, 16, 17, 18Number of Students15,375,450,420,225,15A. 0.15B. 0.30C. 0.28D. 0.25 what usually happens in a conflict of interest case what civil rights are and how they have helped to protect indivisual rights PLZ help me with this :(Part 1: Simplify 250Part 2: Classify the number above as rational or irrationalLevel 3 (Proficient: 85%)Part 1: Simplify 150x*5Part 2: Is the follow expression rational or irrational and why? 24+7 Level 4 (Distinguished: 100%)Part 1: Simplify 13750x*5 y*8Part 2: Create two unique expressions each involving 1 square root and at least 1 operation (adding, subtracting, multiplying, dividing). Make 1 results in a rational number and the other result in an irrational number. Explain your reasoning for both. Hurry please ! Which of the following explains why gray wolves and killer whales are both in the same class?O Both gray wolves and killer whales have teeth.O Both gray wolves and killer whales have live birthsO Both gray wolves and killer whales are carnivoresO Both gray wolves and killer whales have lungs. can someone help, pleaseee The world's largest importer of fish products is:A. JapanB. ChinaC. United StatesD. NorwayPLEASE GICE ME THE RIGHT ANSWER MY GRADES ARE BADDDD Can someone help me A human liver cell has a different size and shape from a human muscle cell. What is the best explanation for these differences?A. The cells perform different functions.OB. One of the cells is used to reproduce more cells while the other is not.OC. One type of cell develops into the other type of cell.OD. One of the cells must have come from another species. PLEASE HELP ASAP!A cheese wheel has a circumference of 18 in and an area of 81 in2. A sector of the wheel with an arc length of 3 in is removed. What is the area of this sector?a) 6 in2b) 486 in2c) 13.5 in2d) 6 in2 Are people more respectful online or in person? Why? write a paragraph which means 5 sentences Susan is suffering from an breathing disorder and is under treatment. Her doctor can verify the effectiveness of the treatment based on the oxygen level in her blood. Which technique can her doctor use to find whether the level of oxygen in her blood ? A. pulse oximeter B. Heart monitor C. ultrasonograph D. brachytherapy Write 1 390 000 in standard form. Anyone know how to do identify the features? ILL MARK AS BRAINLIEST!! PLEASE HELP FAST!! Sophie's town voted on a new speed limit. Out of 75 votes, 15 were in favor of the new speed limit. What percentage of the votes were in favor of the new speed limit? whats 9+10 ? ;) im dumb so i dont know simple mafs Given the equation f(t) = 225(1.23)What is the rate of growth or decay?%What is the initial value?