Use PEMDAS. Start by eliminating the exponents. you should be left with 3 numbers on bottom and 3 on top
multiply them then divide
L=2w-3
w(2w-3)=54
2w²- 3w-54=0
A= 2 , B= -3, C= -54
sub values into quadratic formula
i attached picture of formula
Final answer: you will be given 2 answers 6 and -4.5. -4.5 is rejected since a negative value cannot represent length because that just doesn't make sense.
w=6
Check:
L=2w-3
=2(6)-3
=12-3
=9
9*6=54
Therefore the dimensions of the photograph are 6 cm by 9 cm
When you r typing ur question, there is an Ask Question button, click that then click on the camera icon to take pic or gallery icon to pick pic from gallery
Answer:
Your answer is x=7
Step-by-step explanation:
add 6 to both sides
cross out -6(+6) and add 22+6=28
add 3x on both sides
x+3x=4x and cross out (+3x)-3x
divide 4 on both sides
cross out 4 leave x and divide 28 and 4 =7
Answer:
What is a perfect square trinomial (or possibly triangle).
Step-by-step explanation: