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Zinaida [17]
3 years ago
15

Write down the first five terms of a sequence where the nth term is given by n2 – 5

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0
-3 , -1 , 1 , 3 , 5
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Which expression forms an equation with the given expression?
harina [27]

2(6+1) this is the answer

6 0
4 years ago
The product of two positive consecutive odd integers is 2703. What are the positive numbers?
liberstina [14]

Answer:

The positive numbers are 51 and 53

Step-by-step explanation:

Let first odd integer be x and another odd integer is (x+2).

According to the given condition,

The product of two positive consecutive odd integers is 2703 i.e.

x(x+2) = 2703

x^2+2x-2703=0

It is a quadratic equation. It can be solved as follows :

x = 51 and x = -53

Neglecting negative sign,

The first number = 51

Another number =(51+2) = 53

Hence, the positive numbers are 51 and 53.

7 0
3 years ago
The length of a particular rectangle is 2 inches less than twice its width. If the area of the rectangle is 40 square
lianna [129]

ANSWER:

Let width be x, then length be 2x – 2

Now, Area of rectangle = L × B

  • x(2x – 2) = 40
  • 2x² – 2x – 40 = 0
  • 2(x² – x – 20) = 0
  • x² – x – 20
  • x² –5x + 4x – 20 = 0
  • x(x – 5) + 4(x – 5) = 0
  • (x + 4)(x – 5) = 0
  • x = – 4; 5

Hence, width can't be negative.

So width = 5in.

And Length = 2 × 5 – 2

  • 10 – 2 = 8in.

So, <u>Correct choice</u> - [D] Length is 8 in, Width is 5 in.

3 0
3 years ago
Can you please help me with 7,8, and 9 :)
Nadusha1986 [10]
x^2+7x=-12\\x^2+7x+12=0\\x^2+3x+4x+12=0\\x(x+3)+4(x+3)=0\\(x+4)(x+3)=0\\x=-4\ and \ x=-3
5 0
3 years ago
there are 15 students going on a field trip. If 3/5 of them pack their lunches. how many students packed there lunchee
ikadub [295]

9 students have packed their lunches


3 0
3 years ago
Read 2 more answers
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