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ipn [44]
3 years ago
14

I need help with 9 & 10 please!

Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0
#9 Would be 15% because if 50% liked horse back riding and 1/4 liked canoeing(1/4 is equal to 25%) and 10% liked crafts then in total that would be 85%. So if you subtract 85% from 100% you would get 15%.

#10 If you divide 92 by 1/4 you would get 23.
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Find the area of the part of the plane 3x 2y z = 6 that lies in the first octant.
gavmur [86]

The area of the part of the plane 3x 2y z = 6 that lies in the first octant  is  mathematically given as

A=3 √(4) units ^2

<h3>What is the area of the part of the plane 3x 2y z = 6 that lies in the first octant.?</h3>

Generally, the equation for is  mathematically given as

The Figure is the x-y plane triangle formed by the shading. The formula for the surface area of a z=f(x, y) surface is as follows:

A=\iint_{R_{x y}} \sqrt{f_{x}^{2}+f_{y}^{2}+1} d x d y(1)

The partial derivatives of a function are f x and f y.

\begin{aligned}&Z=f(x)=6-3 x-2 y \\&=\frac{\partial f(x)}{\partial x}=-3 \\&=\frac{\partial f(y)}{\partial y}=-2\end{aligned}

When these numbers are plugged into equation (1) and the integrals are given bounds, we get:

&=\int_{0}^{2} \int_{0}^{3-\frac{3}{2} x} \sqrt{(-3)^{2}+(-2)^2+1dxdy} \\\\&=\int_{0}^{2} \int_{0}^{3-\frac{3}{2} x} \sqrt{14} d x d y \\\\&=\sqrt{14} \int_{0}^{2}[y]_{0}^{3-\frac{3}{2} x} d x d y \\\\&=\sqrt{14} \int_{0}^{2}\left[3-\frac{3}{2} x\right] d x \\\\

&=\sqrt{14}\left[3 x-\frac{3}{2} \cdot \frac{1}{2} \cdot x^{2}\right]_{0}^{2} \\\\&=\sqrt{14}\left[3-\frac{3}{2} \cdot \frac{1}{2} \cdot x^{2}\right]_{0}^{2} \\\\&=\sqrt{14}\left[3.2-\frac{3}{2} \cdot \frac{1}{2} \cdot 3^{2}\right] \\\\&=3 \sqrt{14} \text { units }{ }^{2}

In conclusion,  the area is

A=3 √4 units ^2

Read more about the plane

brainly.com/question/1962726

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5 0
1 year ago
What is the number of ways to arrange 5 objects from a set of 9 different objects
luda_lava [24]
\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad &#10;\begin{cases}&#10;n=9\\&#10;r=5&#10;\end{cases}\implies _9P_5=\cfrac{9!}{(9-5)!}
7 0
4 years ago
X^2+1/2x+____=2 + ____
natali 33 [55]

Answer:  x^2+\frac{1}{2}x+\frac{1}{16}=2 +\frac{1}{16}

Step-by-step explanation:

Given the following Quadratic equation:

x^2+\frac{1}{2}x=2 +

You can change its formed by Completing the square.

In order to do Complete the square, you can follow these steps:

1. You can identify that:

b=\frac{1}{2}

2. Then, you can find (\frac{b}{2})^2. This is:

(\frac{\frac{1}{2}}{2})^2=(\frac{1}{4})^2=\frac{1}{16}

3. Now you must add \frac{1}{16} to both sides of the Quadratic equation in order to keep the balance. Then:

x^2+\frac{1}{2}x+\frac{1}{16}=2 +\frac{1}{16}

4. Finally, simplifying by actoring and adding the like terms, you get:

(x+\frac{1}{4})^2=\frac{9}{4}

3 0
3 years ago
What is the product of 54 and 48
ser-zykov [4K]

Answer: 2592

Step-by-step explanation:

Product means to multiple.

Since product means to multiple, we multiple 54 x 48 to get 2592

3 0
1 year ago
Read 2 more answers
Let f(x)=(x+3)^2and g(x)=f(x)-7. Which of the following shows g(x)?
Mila [183]
F(x) = (x + 3)²

g(x) = f(x) - 7.

g(x) = (x + 3)² - 7

g(x) = (x + 3)(x + 3) - 7

g(x) = x*x + x*3 +3*x + 3*3 - 7

g(x) = x² + 3x + 3x + 9 - 7

g(x) = x² + 6x + 2
6 0
3 years ago
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