2 years ago

Look at the image and answer the question

Mathematics

1 answer:

BabaBlast [244]2 years ago

4 0

Answer:

e. 1 / 16

f . 1 / 9

Step-by-step explanation:

( 1 / 2 )^4

= 1 / 2^4

= 1 / 16

( 1 / 3 )^2

= 1 / 3^2

= 1 / 9

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8) The height of a building h varies directly as the length and inversely as the width, if h = 25m when l = 10m and w = 5m, find

shtirl [24]

Let h,l, and w represent the height, length, and width of the building respectively

Then

$\begin{gathered} h\text{ = }\frac{kl}{w} \\ \text{where k is the constant of proportionality} \end{gathered}$ $\begin{gathered} \Rightarrow k=\frac{hw}{l} \\ \Rightarrow k=\frac{25\times5}{10}=12.5 \end{gathered}$ $\Rightarrow h=\frac{12.5l}{w}$

The new value of h = 50m, but l remains the same.

That is l = 10m

Therefore

$\begin{gathered} \frac{50}{1}=\frac{12.5\times10}{w} \\ \Rightarrow\frac{50}{1}=\frac{125}{w} \\ \text{Cross multiplying, we have} \\ 50w\text{ = 125} \\ \Rightarrow\text{ w=}\frac{125}{50}=2.5 \end{gathered}$

Hence, the width is 2.5m

8 0

1 year ago

Pleasee mwa mwa mwa help me

sammy [17]

Answer: About (-2.414, 0) and (0.414, 0)

Step-by-step explanation:

Let us graph the equation given and see what the x-intercepts are. These are points where the line intercepts the x-axis. <em>See attached</em>.

This means our x-intercepts are at about (-2.414, 0) and (0.414, 0).

These are also equal to $-1-\sqrt{2}$ and $-1+\sqrt{2}$