The local college has a greenhouse that is shaped like a square pyramid, as shown. The lateral faces of the greenhouse are made of glass.
a) Find the surface area of the glass on the greenhouse.
b) A special insecticide is going to be sprayed inside of the greenhouse to kill bugs.
The company bases the price on the amount of cubic meters that the spray will take
the fill the entire greenhouse. To the nearest whole meter, how many cubic meters
will be needed?
c) If it costs $4.75 per cubic meter to purchase the insecticide, how much will the
spray cost?

i dont get the question

step-by-step explanation:

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.