All categories

4 years ago

What is the missing constant term in the perfect square that starts with x^2+ 6x ?

Mathematics

1 answer:

AnnyKZ [126]4 years ago

7 0

Answer:

+9.

Step-by-step explanation:

6 / 2 = 3

3^2 = 9

So it is + 9

Checking:

(x + 3)^2 = x^2 + 6x + 9.

You might be interested in

A rope is cut into three pleces. The lengths are given as 2ab(a - b), 3^2(a + 2b), and b^2 (2a - b).

gladu [14]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$2ab(a-b)+3a^2(a+2b)+b^2(2a-b)\\\\=2a^2b-2ab^2+3a^3+6a^2b+2ab^2-b^3\\\\=\boxed{3a^3-b^3+8a^2b}$

For a = 2, b = 3 the total is

$3\cdot 2^3-3^3+8\cdot 2^2 \cdot 3\\\\=3*8-27+96\\\\=24-27+96\\\\=\boxed{93}$

Thank you

6 0

3 years ago

Read 2 more answers

Brian invests £7900 into his bank account.

DENIUS [597]

Step-by-step explanation:

1. use the equation

current amount X interest to the power of years

commpound interest is 2.3%

The starting value is £7900

So: £7900*1.023^5=£8851.26

Therefore, the answer is £8851.26 after 5 years of interest added

Hope this helps!!!

Have a nice day :)

7 0

3 years ago

What is the answer for -6n-2n=16

djverab [1.8K]

Answer:

n=-2

Step-by-step explanation:

-6n-2n=16

-8n=16

n=16/-8

n=-2

8 0

4 years ago

Read 2 more answers

For a fixed amount of a gas at a constant temperature, the volume of the gas is inversely proportional to its pressure. At a pre

Veronika [31]

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Let

x-------> the pressure in PSI

y------> the volume of the gas in cubic inches

In this problem we have the point $(30,600)$

$x=30\ psi\\y=600\ in^{3}$

Find the constant k

$y*x=k$

substitute the values of x and y

$600*30=k$

$k=18,000\ lb*in$

the equation is

$y=18,000/x$

therefore

the answer is

$y=18,000/x$

4 0

3 years ago

Read 2 more answers

Choose the best estimate for the capcity of a bath tub

NISA [10]

Answer:

Choose the best estimate for the capacity of a bath tub

A. 5 ml

B. 500 ml

C. 50 cl

D. 500 L

Step-by-step explanation:

8 0

3 years ago