Cross multiply
2(11-x) = 1(3x+2)
Distribute
22-2x = 3x+2
Subtract 22 from both sides
-2x = 3x-20
Subtract 3x from both sides
-5x = -20
Divide both sides by -5
x=4
Answer:
This equation has no solutions. So your answer is the last one!
Step-by-step explanation:
Answer:
It would be best if Peter's report card percentage was based on<em> </em><em>the mean</em><em> </em>and if he could drop a percent, he should drop the <em>44%</em><em>.</em>
<em />
Step-by-step explanation:
The median (without dropping a score) of this set would be 75%
( 44%, 64%, 71%, 75%, 84%, 90%, 98% )
The mean (without dropping a score) of this set would be 75.1428571%
526 ÷ 7 = 75.14 ( 7<em>5.1428571 </em>)
Answer:
x=1
Step-by-step explanation:
Step 1: Subtract 3x from both sides.
x+4−3x=3x+2−3x
−2x+4=2
Step 2: Subtract 4 from both sides.
−2x+4−4=2−4
−2x=−2
Step 3: Divide both sides by -2.
-2x/-2 = -2/-2
Answer:
x1= -7
x2=7
Step-by-step explanation:
To find the zeros of a polynomial function, you need to factorize it into multiple monomials or simply use a formula. Most questions want you to factorize the function, so I will solve this by factorization
g(x)=-10x^2 +490
0= -10x^2 +490 ----> we looking for zeroes, so g(x)=0
-10(x^2 - 49)=0 ---> divide -10 from both number
x^2 - 49 =0 ---> divide both side by -10, notice that 49 is 7^2
(x+7)(x-7)=0 ---> x^2 - y^2 = (x+y) (x-y)
x1
x+7 = 0
x= -7
x2
x-7=0
x= 7
