3 years ago

What is the fifth term of the arithmetic sequence 7,3,-1....

Mathematics

1 answer:

Dmitrij [34]3 years ago

7 0

The formula is a1+d(n-1). 7+ -4(5-1). a5 = -9.

You might be interested in

F(x)=4x^2-1 what is the inverse

TEA [102]

Let $y = F^{-1}(x)$ and $F(y) = x$

$4y^2 - 1 = x\\4y^2 = x + 1\\y^2 = \frac{x + 1}{4}\\y = \sqrt{\frac{x + 1}{4}}\\f^{-1} = \sqrt{\frac{x + 1}{4}}$

8 0

4 years ago

Rectangle A has length 12 and width 8. Rectangle B has length 15 and width 10. Rectangle C has length 30 and width 15.Explain ho

postnew [5]

Step-by-step explanation:

Because the ratio of length:width is..

15:10 for b

and

30:15 for c.

Now we will divide..

3:2 for b

and

2:1 for c.

Those are NOT the same things!

7 0

3 years ago

Which of the following services are generally available at a bank

9966 [12]

It is usuallly the mean

7 0

3 years ago

Read 2 more answers

Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of

seropon [69]

The correct answer is C. (5x+3) feet, and here is how I got it.
This is the equation you need to use:
(a+b)^2 = (a+b) (a+b)
So, let us plug in 5x and 3 here:
(5x+3)^2 = (5x+3)(5x+3) = 25x^2 + 15x + 15x + 9 = 25x^2 + 30x + 9 which is the area of the garden.

5 0

3 years ago

In a survey of milk drinkers,24 out of 40 milk drinkers said they preferred chocolate milk.If 600 milk drinkers are surveyed,how

kolbaska11 [484]

24/40 = 360/600
360 will prefer chocolate milk.

5 0

4 years ago

Read 2 more answers