A rectangle has length 3 feet and width 1/4 foot. What is the area of the rectangle?

Find the first 5 terms of the arithmetic sequence : a(1)=-3 , a(17)=-20

madreJ [45]

The explicit formula for arithmetic sequence is:
an=a+(n-1)d
where:
a=first term
d=common difference
given:
a3=22
a(17)=-20
substituting this in our equation we get:
22=a+(3-1)d
22=a+2d
a=22-2d........i

also:
-20=a+(17-1)d
-20=a+16d.....ii
but substituting i in ii we get:
-20=22-2d+16d
-20-22=14d
-42=14d
d=-3
but:
a=22-2d
a=22-2(-3)
a=28
thus the formula will be:
an=28-3(n-1)
thus the first term will be 28
the 2nd term will be:
a2=28-3(2-1)
a2=25

the 3rd term will be:
a3=28-3(3-1)
a3=28-6
a3=22

a4=28-3(4-1)
a4=28-9
a4=15

a5=28-3(5-1)
a5=28-3(4)
a5=28-12
a5=15

5 0

3 years ago

What is the area of a parallelogram whose bases are 9

Nady [450]

 Base=9cm

height=3 cm

Area of parallelogram=b*h

 =9*3

 =27cm^2.

Hope this will help u...:)

6 0

3 years ago

an amusement parks goal is to sell 1 million tickets within the first four months of its being open how many more tickets xoes t

Fantom [35]

Answer:

since I don't know how many tickets they already have, I'm going to divide 1 million by 4 and say that they need to sell 250,000 tickets a month

Step-by-step explanation:

6 0

3 years ago

Express 9 as a ratio of 27

ANTONII [103]

Answer:

9/27 or 9 to 27

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Select the values that make b≥-3 true

liq [111]

Answer:

-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10+

Step-by-step explanation:

and anything above 10 would be true

6 0

3 years ago