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1 year ago

4) Which expression is equivalent to 3x + 5x? X + 8 8x + 2. 8x. 2x

Mathematics

1 answer:

____ [38]1 year ago

6 0

Answer:

Step-by-step explanation:

3x + 8x are like terms which means they have the exact same variable.

To add like terms we add the coefficients which are 3 and 5.

3 + 5 = 8

We have 8 x's. So 3x + 5x = 8x.

In order to add terms, the variable part has to be exactly the same.

It's like saying 3 balls + 5 balls = 8 balls.

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I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

lubasha [3.4K]

Answer:

13.1

Step-by-step explanation:

A = bh

~~~~~~~

$b_{1}$ = 16 , $h_{1}$ = 9

A = 16 × 9 = 144

From another side area of parallelogram with hight "h" base "b"

11h = 144

h = 144 ÷ 11 ≈ 13.1

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1 year ago

Help pls it’s urgent

ArbitrLikvidat [17]

Answer:

S = 2π(4)^2 + 2π(4)(16)

Step-by-step explanation:

The surface area of a cylinder can be found using this equation: 2(πr^2) + 2(πrh). Therefore the answer would be the first one: S = 2π(4)^2 + 2π(4)(16)

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3 years ago

Suppose z equals f (x comma y ), where x (u comma v )space equals space 2 u plus space v squared, y (u comma v )space equals spa

barxatty [35]

$z=f(x(u,v),y(u,v)),\begin{cases}x(u,v)=2u+v^2\\y(u,v)=3u-v\end{cases}$

We're given that $f_x(6,1)=3$ and $f_y(6,1)=-1$ , and want to find $\frac{\partial z}{\partial v}(1,2)$ .

By the chain rule, we have

$\dfrac{\partial z}{\partial v}=\dfrac{\partial z}{\partial x}\dfrac{\partial x}{\partial v}+\dfrac{\partial z}{\partial y}\dfrac{\partial y}{\partial v}$

and

$\dfrac{\partial x}{\partial v}=2v$

$\dfrac{\partial y}{\partial v}=-1$

Then

$\dfrac{\partial z}{\partial v}(1,2)=\dfrac{\partial z}{\partial x}(6,1)\dfrac{\partial x}{\partial v}(1,2)+\dfrac{\partial z}{\partial y}(6,1)\dfrac{\partial y}{\partial v}(1,2)$