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3 years ago

7

Anyone Know The Correct Answer To My Question ?

1 answer:

rjkz [21]3 years ago

5 0

120% = 144$

then100% = (100×144)÷120 = 120 so answer 120$

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I just need help on confirming my answers please.

-Dominant- [34]

Both A. and D. are increasing.

8 0

3 years ago

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the lateral area of a cone is 574 pi cm2. The radius is 19.6 cm. What is the slant height to the nearest tenth of a centimeter?

bulgar [2K]

$\bf \textit{lateral area of a cone}\\\\
LA=\pi r\sqrt{r^2+h^2}~~
\begin{cases}
r=radius\\
\sqrt{r^2+h^2}=slant~height\\
-----------\\
LA=574\pi \\
r=19.6
\end{cases}
\\\\\\
574\pi =\pi (19.6)\sqrt{r^2+h^2}\implies \cfrac{574\pi }{19.6\pi }=\sqrt{r^2+h^2}
\\\\\\
\cfrac{574}{19.6}=\sqrt{r^2+h^2}$

5 0

3 years ago

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An airplane is flying at a speed of 500 mi/h at an altitude of one mile. The plane passes directly above a radar station at time

d1i1m1o1n [39]

Answer:

a) $s=\sqrt{1+d^2}$

b)d(t)=500t

c) $s(t) =\sqrt{1+250000t^2}$

Step-by-step explanation:

d = Horizontal distance

s = the distance between the plane and the radar station

The horizontal distance (d), the one mile altitude, and s form a right triangle.

So, use Pythagoras theorem

$Hypotenuse^2=Perpendicular^2+Base^2$

$s^2=1^2+d^2$

a) $s=\sqrt{1+d^2}$

(b) Express d as a function of the time t (in hours) that the plane has flown.

$distance = speed \times time$

d(t)=500t

(c) Use composition to express s as a function of t.

$s(t) =\sqrt{1+d^2}$

using b

$s(t) =\sqrt{1+(500t)^2}\\s(t) =\sqrt{1+250000t^2}$

6 0

3 years ago

At a birthday party there were five more girls than boys. If the ratio of girls to boys was 4 to 3,

exis [7]

Let number if boys be x

No of girls=x+5

ATQ

$\\ \sf\longmapsto \dfrac{x+5}{x}=\dfrac{4}{3}$

$\\ \sf\longmapsto 3(x+5)=4x$

$\\ \sf\longmapsto 3x+15=4x$

$\\ \sf\longmapsto 4x-3x=15$

$\\ \sf\longmapsto x=15$

<h3>Number of girls</h3>

$\\ \sf\longmapsto x+5=15+5=20$

3 0

3 years ago

Is 11.6 is irrational.

pantera1 [17]

No it is not, in order for it to be it would have to have ... at the end meaning it continues, this stops and is rational

4 0

3 years ago

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