Answer:
X=6,x=2
Step-by-step explanation:
X2-8x+12
So we will have to factorise
So let's solve
X2-8x+12
X2-6x-2x+12
X(x-6)-2(x-6)
(X-2)(x-6)
X-2=0
X=2
X-6=0
X=6
X=6 or x=2
ANSWER:
mean:47.8
mode:57
median:45
37, 38, 43, 45, 57, 57, 58
Answer:
the perimeter is 30
Step-by-step explanation:
ok so lets say this
width= x
length= 2x
the area is
A= wl
or
25 = x(2x)
25= 2x^2
5 = x thats the width so we know that if we double that we get the legnth so
the legnth is 10
the perimeter is defined as:
2l +2w =p
insert the width and legnth
2(5) + 2(10) = p
10+ 20= p
p= 30
Answer:
3.78
Step-by-step explanation:
Percentage solution with steps:
Step 1: We make the assumption that 9 is 100% since it is our output value.
Step 2: We next represent the value we seek with $x$.
Step 3: From step 1, it follows that $100\%=9$.
Step 4: In the same vein, $x\%=42$.
Step 5: This gives us a pair of simple equations:
$100\%=9(1)$.
$x\%=42(2)$.
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have
$\frac{100\%}{x\%}=\frac{9}{42}$
Step 7: Taking the inverse (or reciprocal) of both sides yields
$\frac{x\%}{100\%}=\frac{42}{9}$
$\Rightarrow x=466.67\%$
Therefore, $42$ is $466.67\%$ of $9$.
