Step-by-step explanation:
x= Number of small pages
y= Number of full pages
1 x + 1 y = 21 .............1
Total words
1200 x + 1500 y = 27000 .............2
Eliminate y
multiply (1)by -1500
Multiply (2) by 1
-1500 x -1500 y = -31500
1200 x + 1500 y = 27000
Add the two equations
-300 x = -4500
/ -300
x = 15
plug value of x in (1)
1 x + 1 y = 21
15 + y = 21
y = 21 -15
y = 6
y = 6
x= 15 Number of small pages
y= 6 Number of full pages
Answer:
Step-by-step explanation:
<u>Given </u><u>:</u><u>-</u><u> </u>
- The sum of two numbers is 52.
- The product of the numbers is 4 .
And we need to find the sum of reciprocals of the numbers. For that let us assume that the numbers are .
<u>According</u><u> to</u><u> </u><u>1</u><u>s</u><u>t</u><u> </u><u>condition</u><u> </u><u>:</u><u>-</u><u> </u>
Now expressing this equation by keeping only one variable on one side as ,
<u>According</u><u> to</u><u> </u><u>2</u><u>n</u><u>d</u><u> </u><u>condition</u><u> </u><u>:</u><u>-</u>
- Now solve this quadratic equation.
On solving the equation using quadratic Formula we will get the value of y as ,
- Note that the sum of x and y is 52 .So in order to find the value of x we will subtract 26±4√42 from 52 and we will get the value of x same as y .
Now we need to find out the sum of reciprocal of the two numbers . That will be ,
<u>Hence</u><u> the</u><u> </u><u>sum </u><u>of</u><u> </u><u>their </u><u>reciprocals </u><u>is </u><u>1</u><u>3</u><u> </u><u>.</u>
X² = hyp² - cat²
x² = 625 - 156.25
x² = 468.75
x ≈ 21,6
Answer:
x=5
Step-by-step explanation:
2x+7=5x-8
+8+7=5x-2x
15=3x
15/3
x=5