If (9x − 4)(9x + 4) = ax^2 − b, what is the value of a?

2 answers:

6 0

A=81
Hope this helps :)

3 0

Hope this helps you.

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mars1129 [50]

Answer:

height is 4ft.

Step-by-step explanation:

I used pathagorus theorem .All explaination is in the pic below.

5 0

3 years ago

Mashcka [7]

The sides of a right triangle are
$a=8-5=3
\\ b=6-4=2
\\
\\A=A_{rectangle}-A_{triangle}=8\times 6- \frac{ab}{2} =48-\frac{3\times2}{2}=48-3=45$

7 0

3 years ago

Anika [276]

60 divided by 0.4(40%)=150

=150

8 0

3 years ago

Stels [109]

Answer = 14/8

Step by step explanation
2 x 7/8
= (2x7)/8
= 14/8

6 0

2 years ago

OLEGan [10]

1/3x + y = 4....subtract 1/3x from both sides
y = -1/3x + 4 <===

5 0

3 years ago