it is easy 90x+90y then divide by 4
Step-by-step explanation:
The two diagonals<span> are </span>equal<span> in length and bisect each other. Every </span>quadrilateral<span> with both these properties is a </span>rectangle<span>. A </span>rectangle<span> is rectilinear:which means its sides meet at right angles.</span>
Answer:
it seems like the first term is -64, so lets write the formula accordingly:
a_n = a1(r)^(n-1)
where 'n' is the number of terms
a1 is the first term of the sequence
'r' is the ratio
the ratio is 
because -64 * = 16 and so on...
the explicit formula is :
= 
Step-by-step explanation:
The scale factor is 12/6 = 10/5 = 2.
Answer:
a = - 4
Step-by-step explanation:
Given x = - 2 is a root then f(- 2) = 0
f(x) = x³ + x² + ax - 4, thus
f(- 2) = (- 2)³ + (- 2)² - 2a - 4 = 0, that is
f(- 2) = - 8 + 4 - 2a - 4 = 0, thus
- 8 - 2a = 0 ( add 8 to both sides )
- 2a = 8 ( divide both sides by - 2 )
a = - 4
