All categories

3 years ago

Eight more than the product of two and a number xx

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

8 0

Answer:

Step-by-step explanation:

Let the number be xx

Therefore the product of two and the number is 2xx

If there is eight more than that number, we can say that

2xx + 8

If it is assumed that the equation is equal to zero

2xx + 8 = 0

2xx = -8

xx = -8/2

xx = -4

You might be interested in

Guys please help me with this question, I’d appreciate it a lot

lutik1710 [3]

Answer:

540

Step-by-step explanation:

area of trapezium is b×h

7 0

3 years ago

Read 2 more answers

I really need help please help me

alexira [117]

Answer:

top right

Step-by-step explanation:

If you imagine yourself building with that model you can see its that one

8 0

3 years ago

Simplify this equation Thanks a lot!!!

den301095 [7]

Answer:

-1

Step-by-step explanation:

We need to simplify the given expression . The given expression is ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

Here we can see that the power of the both exponent is same that is (2n+1) . Recall the property of exponents ,

$\bf\implies a^m \times b^m = (ab)^m$

Using this property , we have ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

This can be written as ,

$\rm\implies\{( 2 \sqrt6 +5) ( 2\sqrt6 - 5)\}^{2n-1}$

Simplifying using ( a+b)(a-b) = a² - b² ,

$\rm\implies\{( 2 \sqrt6)^2 -5^2 \}^{2n-1}\\\\\rm\implies ( 24 - 25)^{2n-1}$

Subtracting the numbers inside the brackets ,

$\rm\implies (-1)^{2n - 1 }$

Now we know that every odd number is in the form of 2n -1 , where n is any integer. Therefore , the power is odd .

Since the base is (-1) , for even power it is 1 and for odd power it is -1 . Therefore the final answer is ,

$\rm\implies\boxed{\quad \red{ -1 }\quad }$

Hence the required answer is (-1) .

4 0

3 years ago

Taisha uses the elliptical cross- trainer at the gym. Her general goal is to burn 280 calories per workout, but she varies by as

Fed [463]

Given - Taisha has a general goal is to burn the 280 calories.

she is varies by the 25 calories.

Find out the maximum and minimum of calories burn by the taisha.

To proof -

let us assume that the calories burn by the taisha be x.

as given the calories are varies by the 25 calories.

then the maximum calories equation becomes

x-25 = 280

x = 280 + 25

x = 305

the maximum calories burn by the taisha is 305 calories.

minimum calories equationbecomes

x + 25 = 280

x = 255

The minmum calories burn by the taisha is 255 calories.

Hence proved

8 0

3 years ago

Read 2 more answers

What is the Gcf for 12,54

JulsSmile [24]

I believe it’s 6

Hope this helps you :))

4 0

3 years ago

Read 2 more answers