4. Write the first five terms of the sequence defined recursively. Use the pattern to write the nth term of the sequence as a function of n. (Assume that n begins with 1.)
a1=5, an+1 = -an
a. an = 5n
b. Q, =(-5)"
C. Q, =(-5)n-1
d. a,=5(-1)"
e. a,=5(-1)-1

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?