2x⁴ + 4x² + 6x⁹ - x + 3x⁹ - 5x⁹ + 2x⁸
2x⁴ + 4x² + 6x⁹ + 3x⁹ - 5x⁹ - x + 2x⁸
2x⁴ + 4x² + 4x⁹ - x + 2x⁸
-4x⁹ - 2x⁸ - 2x⁴ - 4x² - x
Answer:
<h2><em><u>61 marks</u></em></h2>
Step-by-step explanation:
<em><u>Given</u></em><em><u>,</u></em>
Marks of the four exams = 65, 80, 76, 68
Let the mark for the fifth exam be = x
Mean of the five exams = 70
<em><u>Therefore</u></em><em><u>,</u></em>
<em>By</em><em> </em><em>the</em><em> </em><em>problem</em><em>, </em>
![= > \frac{65 + 80 + 76 + 68 + x}{5} = 70](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20%20%5Cfrac%7B65%20%2B%2080%20%20%2B%2076%20%2B%2068%20%2B%20x%7D%7B5%7D%20%20%3D%2070)
![= > \frac{289 + x}{5} = 70](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20%20%5Cfrac%7B289%20%2B%20x%7D%7B5%7D%20%20%3D%2070)
=> 289 + x = 70 × 5
=> 289 + x = 350
=> x = 350 - 289
=> x = 61
<em><u>Hence</u></em><em><u>,</u></em>
<em><u>Marks</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>fifth</u></em><em><u> </u></em><em><u>exam</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>61</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
Answer:
4/5x(v-7)=2
multiply both sides by 5/4, the reciprocal of 4/5
v-7=2x(5/4)
Express 2x(5/4) as a single fraction
v-7=<u>2</u><u>x</u><u>5</u>
4
Multiply 2 and 5
v-7=<u>1</u><u>0</u>
4
Reduce the fraction 10/4 to the lowest by extracting and cancelling 2
v-7=<u>5</u>
2
Add 7 to both sides
v=<u>5</u>+7
2
Covert fraction to 14/2
v=5/2+14/2
Since 5/2 and 14/2 have the same denominator, add them by adding their numerators
v=<u>5</u><u>+</u><u>1</u><u>4</u>
2
Add 5 and 14 together
v=<u>1</u><u>9</u>
2
Answer:
For number 1, it's 3(x^2+1)
Step-by-step explanation:
Step 1: Identify the GCF of the polynomial.
Step 2: Divide the GCF out of every term of the polynomial.