PLEASE I NEED HELP WITH THIS!!!!

Mathematics

1 answer:

trapecia [35]3 years ago

8 0

Answer:

oh yeah thats the 3rd one

Step-by-step explanation:

You might be interested in

If y varies inversely as x, and y=10 when x=2, find y when x=8

dedylja [7]

$\bf \qquad \qquad \textit{inverse proportional variation}\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=10\\
x=2
\end{cases}\implies 10=k2\implies \cfrac{10}{2}=k\implies 5=k
\\\\\\
therefore\qquad \boxed{y=\cfrac{5}{x}}
\\\\\\
\textit{when x = 8, what is \underline{y}?}\qquad y=\cfrac{5}{8}$

4 0

3 years ago

Read 2 more answers

Lines AD and BC are parallel. Find the measures

nlexa [21]

Answer:

45, 30, & 105

Step-by-step explanation:

<B=<D by alt. interior <s

180-150=30, so <C=30, <C=<A by alt interior <s

30+45=75

180-75=105

4 0

2 years ago

Investors buy a studio apartment for $120000 . Of this amount, they have a down payment of 12000 . Their down payment is what p

Nitella [24]

well, 120,000 has 4 zeros and 12,000 has 3 zeros, so if we divide 120,000 by 10 we get 12,000, just to make it short, 12,000 is one tenth of 120,000 and thus the 10%.

now, 48,000, we know that 120,000 is the 100%, what is 48,000 in percentage off of it?

$\begin{array}{ccll} amount&\%\\ \cline{1-2} 120000&100\\ 48000&x \end{array}\implies \cfrac{120000}{48000}=\cfrac{100}{x}\implies \cfrac{5}{2}=\cfrac{100}{x} \\\\\\ 5x=200\implies x=\cfrac{200}{5}\implies x=40$

5 0

2 years ago

If you were given the following statements write your conclusion <br> if you are given :

prohojiy [21]

Answer:

ab and cd intersect at E because they are vertically opposite angles they always intersect at a point

6 0

2 years ago

What is the mechanical advantage of a ramp that is 5 m long and 1.5 m high

skad [1K]

It would 7.5 meters long

8 0

3 years ago

PLEASE I NEED HELP WITH THIS!!!!​

PLEASE I NEED HELP WITH THIS!!!!