Hey:) can you please help me posted picture of question

Mathematics

2 answers:

trasher [3.6K]3 years ago

7 0

Answer:
32x² + 36x + 9

Explanation:
To answer the question, we will simply multiply each term from the first bracket by each term from the second bracket and then combine like terms to get the final expression.

This can be done as follows:
(8x + 3)(4x + 3)
8x(4x) + 8x(3) + 3(4x) + 3(3)
32x² + 24x + 12x + 9
32x² + 36x + 9

Hope this helps :)

enyata [817]3 years ago

4 0

The given expression is:

(8x + 3)(4x + 3)

Using the FOIL method, we can expand the expression as:

8x(4x + 3) + 3(4x + 3)
= 32x² + 24x + 12x + 9
= 32x²+ 36x + 9

So option A gives the correct answer to this question.

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An arc subtends a central and measuring pi/2 radians.

Sindrei [870]

Answer:

1/4th

Step-by-step explanation:

This comes from knowing the unit circle in both radians and degrees. However, you could also calculate it from knowing that 360 degrees is 2 $\pi$ radians. What you'll find is that $\frac{\pi }{2}$ radians is 90 degrees, or 1/4th of the circle. This means that an arc measuring $\frac{\pi }{2}$ radians will be 1/4th of the entire circumference.