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4 years ago

How do we express four less than the square of a number?

Mathematics

1 answer:

Gre4nikov [31]4 years ago

4 0

Answer:

$x^{2} - 4$

Step-by-step explanation:

in this case, $x$ is your number. we will always note square with the tiny two at the top of the number.

Four less than anything is easily shown with a minus four.

eg. four less of 12 square:

$12^{2} - 4$ = :)

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Point-slope equation of the line through (6,4) and (7,2)

Nataly [62]

Answer:

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (6, 4) and (7, 2). Substitute:

$m=\dfrac{2-4}{7-6}=\dfrac{-2}{1}=-2$

Using the first point

$y-4=-2(x-6)$

Using the second point

$y-2=-2(x-7)$

7 0

4 years ago

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

Vesnalui [34]

Answer:

(4,0)

Step-by-step explanation:

5 0

3 years ago

I need the answer to

Vesnalui [34]

Answer:

I think its B

Hope this helps

8 0

3 years ago

james deposits $12,500 into savings account that earns 4.5% annual simple interest. Assuming he doesn't make any additional depo

ad-work [718]

Answer:

James is expected to earn $562.5 at the end of the year as Interest.

Step-by-step explanation:

Here, the amount deposited = Principal = $12,500

Rate of Interest = R = 4.5%

Time = T = 1 year

Now, to find the interest at the end of the year:

$\textrm{Simple Interest} = \frac{P \times R \times T}{100}$

or, S I = $\frac{12,500 \times 4.5 \times 1 }{100} = 562.5$

or, S I = $562.5

Hence, James is expected to earn $562.5 at the end of the year as Interest.

4 0

3 years ago

Bryan needs to build a fence around his rectangular vegetable garden. The length will be 2 feet longer than the width. If he use

GalinKa [24]

In order to do this, one side of the rectangle will be x+2, and the other will just be x. The x would be representing the width since the length is the width (x) plus two feet (+2). Next, you have to make an equation. So, since it all has to use 16 feet of fencing, you would set the two sides to be added to equal 16. So, it would be: 16=x+2+x. Then, you reduce that, so it would be: 16=2x+2. After that you just solve for x (which means that you want x by itself on one side of the = ). So, you would subtract 2 from both sides. Since 2-2=0, that would make the "+2" go away; since 16-2=14, that would replace the 16. So, your new equation is: 14=2x. After that you just divide both sides by 2 because 2 divided by 2=0. 14/2=7. So, you would end up getting: 7=x as your final answer.

Now, you just put 7 where x was in the sides. So 2x (which was the length) trims into: 2 times 7, which =14 and the x (which was the width) we already figured out was 7. This, the width would be 7, while the length would be 14.

5 0

3 years ago