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3 years ago

Hello! Anyone able to help me with question 3 + explanation too? Thanks!

Mathematics

2 answers:

taurus [48]3 years ago

5 0

Answer:

2 or 12

Step-by-step explanation:

The answer that we will use this equation 1/t1 +1/t2=1/ttotal

where t1 is the time of smaller pipe while t2 is the of the larger pipe

Given t total =4 while t2 is equal to t2=t1-6

So know you can solve the problem by changing it into (2t1-6)/(t1*(t1-6))=1/4

8( t1-3)=(t1^2-6t1)

t1^2-14t1+24=0

t1=2 or 12

Colt1911 [192]3 years ago

4 0

Answer:

2or12

Step-by-step explanation:

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3 years ago

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3 years ago

Plz help me with this questions and show working out thanks

Paraphin [41]

Answer: The steps and answers to the first two are below but you need to understand slope = change in y / change in x = y2 - y1/ x2 - x1

And you need to understand y = mx + c

m= slope c is y intercept

Substitute either point given - only use one as the x and y and find c

Step-by-step explanation:

1. You need to follow the steps -

the point is given as (2,5) = (x,y)

So what this means is x =2 and y =5

Simple substitutions is the step 5 = 3 x 2 + c

5 = 6 + c or easier to see is c + 6 =5

subtract 6 from both sides c + 6 = 5

-6 -6

__________________

c = -1

x1,y1 x2,y2

( 3,2) and (5,6) are two points on the line

you already calculate the slope which is m = noy2-y1/x2-x1 = 6-2/5-3 = 4/2 = 2

Remember y= mx + c

y = 2 x + c

now substitute in (3,2) which is (x1, y1) into the x and y in your equation

2 = 2 (3) + c

2 = 6 + c

subtract 6 from both sides

-4 = c

Now you should use this and do your last question yourself

5 0

2 years ago

Garne Problem med

Citrus2011 [14]

Total distance the rover need to travel is $D = 1miles$ .

<u>Step-by-step explanation:</u>

We have , Garne Problem med . A rover needs to travel mile to reach its destination traveled mile. a rover needs to travel 5/8 mile to reach its destination it has already travel 3/8 miles . We need to find that how much farther does the rover need to travel , Let's do it step by step:

First , rover has already traveled 3/8 miles , Let total distance to be traveled by rover is D :

⇒ $D = \frac{3}{8} + d$ , where d is distance left to cover .

Now, rover need to travel 5/8 miles more to reach destination :

⇒ $D = \frac{3}{8} + d$ , where d is distance left to cover , So $d = \frac{5}{8}$

⇒ $D = \frac{3}{8} + d$

⇒ $D = \frac{3}{8} + \frac{5}{8}$

⇒ $D = \frac{3+5}{8}$

⇒ $D = \frac{8}{8}$

⇒ $D = 1miles$

∴ Total distance the rover need to travel is $D = 1miles$ .

8 0

3 years ago

Please help me with this problem. I'm stuck!!

mihalych1998 [28]

$\bf S(t)=4\pi \left( \cfrac{3}{8}t^4 \right)^2\impliedby \textit{distributing the exponent}
\\\\\\
S(t)=4\pi \left( \cfrac{3^2}{8^2}t^{4\cdot 2} \right)\implies S(t)=4\pi \cdot \cfrac{9t^8}{64}\implies S(t)=\cfrac{4}{64}\cdot \cfrac{9\pi t^8}{1}
\\\\\\
S(t)=\cfrac{1}{16}\cdot \cfrac{9\pi t^8}{1}\implies S(t)=\cfrac{9\pi t^8}{16}$

6 0

3 years ago