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3 years ago

I suck at triangles, helpp?

Mathematics

2 answers:

mestny [16]3 years ago

6 0

4 divided by n is equal to 3 divided 5

IgorC [24]3 years ago

6 0

Answer:

4/n = 3/5 hope I helped :)

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For a certain bathtub, it takes the hot water faucet

Valentin [98]

So, we know both faucets open, can do the whole job in 6minutes

ok, how much has the faster cold water faucet done in 1minute then?

well, let's say the the rate of speed of the cold water faucet is "c", so in 1minute it has done 1/c of the whole work

now, we know the hot water faucet is slower, it takes it 3 times as long, that means is 1/3 the speed of the cold water faucet, so, how much does the hot water faucet do in 1min? well, we know is 1/3 fast as the cold one, the cold one is 1/c, what's 1/3 of 1/c? well, 1/3 * 1/c

now, we know they both added together, can do the whole job in 6 minutes, so in 1minute, they've done 1/6 of the job then

thus

$\bf \begin{array}{cccccclllllll}
\cfrac{1}{c}&+&\left( \cfrac{1}{3}\cdot \cfrac{1}{c} \right)&=&\cfrac{1}{6}\\\\
\cfrac{1}{c}&+&\cfrac{1}{3c}&=&\cfrac{1}{6}\\\\
\uparrow &&\uparrow &&\uparrow \\
\textit{cold water rate}&&\textit{hot water rate}&&\textit{total done by both}
\end{array}\\\\
-----------------------------\\\\$

$\bf \cfrac{3+1}{3c}=\cfrac{1}{6}\implies 24=3c\implies \cfrac{24}{3}=c\implies \boxed{8=c}
\\\\\\
\textit{now, if the cold water faucet can do it in 8 minutes by itself}\\\\
\textit{then the hot water faucet can do it in 3 times as long}
\\\\\\
3\cdot 8\implies \boxed{24}$

4 0

3 years ago

There are 28 marbles in the box. There are 12 red marbles, 10 blue marbles, and 6 yellow marbles. What percent of the marbles ar

Ronch [10]

Answer:

There are 28 marbles in the box. Some are red (12), others are yellow (6) and others are blue (10).

If in this box there 28 marbles and 6 of them are yellow, we substract to get the quantity of marbles that aren't yellow: 28-6 = 22

So 22 of the 28 marbles aren't yellow: 22/28, which we can simplify dividing the numerator and denominator by 2: 11/14

8 0

3 years ago

Use the tables below to find (p - 9)(2).

Vesnalui [34]

Answer:

Step-by-step explanation:

p(2) - q(2)

3 - (-2)

3 + 2

= 5

8 0

3 years ago

What is r + 3/4 when r=-2/4

vazorg [7]

Plug in -2/4 for R
so -2/4+3/4= 1/4

7 0

3 years ago

Read 2 more answers

Which function has the domain as y=2 square root of x

nikitadnepr [17]

Using it's concept, any function with domain $x \geq 0$ has the same domain as $y = 2\sqrt{x}$ .

<h3>What is the domain of a function?</h3>

The domain of a function is the set that contains all possible input values for the function.

Function $y = 2\sqrt{x}$ is defined for $x \geq 0$ , hence any function with domain $x \geq 0$ has the same domain as $y = 2\sqrt{x}$ .

More can be learned about the domain of a function at brainly.com/question/10891721

#SPJ1

3 0

2 years ago