KarateKat
17.02.2020 •
Mathematics
In ΔXYZ, x = 5.9 meters, y = 8.9 meters, and z = 5.8 meters. Find the remaining measurements of the triangle, and round your answers to the nearest tenth.
Solved
Show answers
More tips
- H Health and Medicine How Many Ribs Do Humans Have?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- W Work and Career Мерчендайзинг – все, что нужно знать...
- O Other Everything You Need to Know About Kudyabliks...
- F Food and Cooking How to cook crayfish? Everything you need to know...
- F Food and Cooking Homemade kvass: recipe and brewing process...
- H Health and Medicine How to Choose the Right Tanning Cream?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- S Sport Running: How to Do It Right?...
Answers on questions: Mathematics
- M Mathematics Copy and answer on a clean sheet of paper. Simplify each expression, color the correct answer to lead you to the next expression until you reach the end. Take a photo of your work...
- M Mathematics The population of rabbits on an island is growing exponentially. In the year 1991, the population of rabbits was 9100, and by 1998 the population had grown to 18000. Predict the...
- E English Questions such as tell me about yourself? and how would you describe your symptoms? are examples what kind of question?...
- B Biology How does the lymphatic system destroy harmful substances? by drowning them with water by increasing the ph in the body by sneezing and coughing by producing antibodies...
- M Mathematics Determine the sets of collinear points. choose all that apply....
- M Mathematics The researcher also determined that the standard deviation of all horses coming to the veterinary clinic is 8 years. Based on the Central Limit Theorem we know the distribution...
- M Mathematics If 3/5 of a job can be completed in 6 weeks how long will it take to complete the entire job working at the same rate...
Ответ:
7x³ = 28x is our equation. We want its solutions.
When you have x and different powers, set the whole thing equal to zero.
7x³ = 28x
7x³ - 28x = 0
Now notice there's a common x in both terms. Let's factor it out.
x (7x² - 28) = 0
As 7 is a factor of 7 and 28, it too can be factored out.
x (7) (x² - 4) = 0
We can further factor x² - 4. We want a pair of numbers that multiply to 4 and whose sum is zero. The pairs are 1 and 4, 2 and 2. If we add 2 and -2 we get zero.
x (7) (x - 2) (x + 2) = 0
Now we use the Zero Product Property - if some product multiplies to zero, so do its pieces.
x = 0 > so x = 0
7 = 0 > no solution
x - 2 = 0 > so x = 2 after adding 2 to both sides
x + 2 = 0 ---> so = x - 2 after subtracting 2 to both sides
Thus the solutions are x = 0, x = 2, x = -2.