Answer:
(-1 , 7)
Step-by-step explanation:
Read the symbol ∩ as the word "AND"
x-2 < 5 AND x+7 > 6
x< 5+2 AND x > 6-7
x < 7 AND x > -1
All the numbers greater than -1 AND less than 7
Interval (-1 , 7)
-x+4(x+3) = 9
Multiplying...
-x+4x+12=9
So,
3x + 12 = 9
Now, subtract 12 from both sides.
3x + 12 - 12 = 9 - 12
3x = -3
Then, divide by 3.
3x/3 = -3/3
x = -1
Answer:
x = 98 degrees
Step-by-step explanation:
The sum of angles in a pentagon is 540 degrees. You can find this with the formula where n is the number of sides: 180(n-2). This formula will find the angle sum of a polygon. Now, since you know the value of every other angle except X, we can construct the equation 112+100+113+117+x=540
Solving this equation yields x=98 degrees
Answer:
x=8.499
y=0.167
Step-by-step explanation:
the equation says:x^2-9y^2=72....(1)
x+3y=9.......(2)
divide (2) from (1),it becomes:
x-3y=8
making x subject of formula,
x=8+3y....(3)
submitting (3) into (1),it becomes
(8+3y)^2-9y^2=72
64+48y=72
48y=72-64=8
y=8/48=0.167......(4)
submitting (4) into (2),it becomes
x+3(0.167)=9
x+0.501=9
x=9-0.501
x=8.499
Answer:
6/5
Step-by-step explanation:
3/5*2/1=(3*2)/(5*1)=6/5