Answer:
simplify to get the answer i think it would be 0.2
Step-by-step explanation:
Answer:
2.8
Step-by-step explanation:
These 2 irregular pentagons are similar, meaning that the second one is a scaled down version of the first one.
We can work out the scale factor by picking 2 corresponding sides (one from each of the pentagons) and dividing the bigger one by the smaller one.
I'm using 5 and 3.5, but any 2 matching sides work. 5÷3.5 can be solved by converting to a fraction equation (to get a neater answer). This gives
÷
, which can be solved to
or
.
This means 4÷x=
. This can be rearranged to x=
÷
, which can be solved to
, which is 2.8 as a decimal.
**This question involves similar shapes, which you may wish to revise. I'm always happy to help!
-3 (3x-5)=87
Distributive property
-9x + 15 = 87
Subtract 15 from both sides
-9x = 72
Divide both sides by - 9
x = - 8