Answer:
10
Step-by-step explanation:
Your scale factor is 3/2, because when you compare AC and DF, the ration is 18/12, or 3/2. We can set up a proportion:
3/2=15/x
We cross multiplu
3x=30
x=10
So, the length of DE is 10 units.
Hope this helps!
Working out the expression 7(3ˣ) is first to calculate the value of 3ˣ then multiply the answer to 7.
For example, let x = 2
Then 7(3ˣ) = 7(3²) = 7 × 9 = 63
With the same value of x = 2, calculating 21ˣ = 21² = 441, which isn't the same answer with the expression 7(3ˣ)
Answer:
B(2,-7)
Step-by-step explanation:
Answer:
y+2 =3(x+1)
Step-by-step explanation:
Firstly I will find slope of this linear function:
m=(y-yo) / (x-xo)
m=(-2-10)/(-1-3)
m=-12/-4
m=3
Replacing A(-1-2) :
(y-yo)=m(x-xo)
We can write a proportion for this question...
3.147/1=x/5.747
We can now solve for x by using cross multiplication. Multiply 3.147 and 5.747 and you get 18.085809. X times 1 is just x. x=18.085809. Although this seems like a crazy number it is a correct value
