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4 years ago

Three times a number n plus 16

Mathematics

1 answer:

HACTEHA [7]4 years ago

4 0

Answer:

3n+16

Step-by-step explanation:

three times: (3) a number n +16

(3)n+16 or 3xn+16

3n+16

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A square has a diagonal length 18 in. What is the side length of the square?

Elenna [48]

Answer:

9 $\sqrt{2}$ inches

12.728 inches

Step-by-step explanation:

Use Phytagorean Theorem

$a^{2} +b^{2} =c^{2}$

Since both all sides of a square are equal, this means that $a^{2}$ and $b^{2}$ are equal.

So that leaves us with:

$a^{2} +a^{2} = 18^{2}$

Simplify

$2a^{2} = 324$

Divide both sides by 2

$\frac{2a^{2} }{2} =\frac{324}{2}$

Simplify

$a^{2} = 162$

Find the square root of both sides

$\sqrt{a^{2} } =\sqrt{162}$

a = 9 $\sqrt{2}$

(or if you want the decimal, rounded to the 3rd decimal place: 12.728)

4 0

2 years ago

If sin(xy)=x^2, then dy/dx =

kumpel [21]

Hello,

$f(x,y)=sin(xy)-x^2\\

 \dfrac{\partial f}{\partial x} =cos(xy)*y-2x\\
 \dfrac{\partial f}{\partial y} =cos(xy)*x\\

 \dfrac{dy}{dx} =-\dfrac{\dfrac{\partial f}{\partial x}}{\dfrac{\partial f}{\partial y}}\\

=- \dfrac{cos(xy)*y-2x}{cos(xy)*x}\\\\

=- \dfrac{y}{x}+ \dfrac{2}{cos(xy)} \\


$

6 0

4 years ago

Write Two Different Addition Equations That Have 12 As The Solution.

kow [346]

6+6=12
8+4=12

or if you mean algebraic equation:

6+x=12
x+4=12

5 0

4 years ago

Read 2 more answers

The midpoint of AB has coordinates of (4, -9). Endpoint A has coordinates (-3, -5). What are the coordinates of B?

gogolik [260]

Well, When I graphed it I got (11,-13)
I hope this helped!

4 0

3 years ago

Solve for d. <br><br> 6(d+1)−2d=54

alexandr402 [8]

Answer:

Step-by-step explanation:

6(d+1)−2d=54

Here, we have to find the value of d

multiply (d+1) by 6

6×d + 6×1 - 2 d= 54

6d + 6 - 2d= 54

Now subtract 2 d from 6d

6d- 2d +6= 54

4 d+ 6=54

Now, by using transposition method,

+ 6 will be transferred from L.H.S to -6 to R.H.S

4 d = 54- 6

4d= 48

Now, divide 48 by 4

d= 48÷ 4

d= 12

Hence, the value of d is 12

Hence, the correct answer is 12

3 0

4 years ago

Read 2 more answers