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3 years ago

15

Help mehhhhhhhhhhhhhh. Question is which equation represents the line shown on the graph?

2 answers:

zaharov [31]3 years ago

7 0

C is the answer because slope is rise over run and the slope goes down 3 and right 5 times so -3/5 is the answer.

Paul [167]3 years ago

3 0

Answer:

y=-3/5 or C

Step-by-step explanation:

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You decide to enter in a rowing competition. To train, you go to the boat house and begin rolling down stream. You row for the s

fredd [130]

Answer:

Time spent rowing down stream $=100\ seconds$

Speed of boat in still water $=14\ ms^{-1}$

Step-by-step explanation:

Let speed of boat in still water be $= x\ ms^{-1}$

Speed of current $= 10\ ms^{-1}$

Speed of boat down stream = $\textrm{Speed of boat in still water +Speed of current}= (x+10)\ ms^{-1}$

Distance rowed down stream = 2400 m

Time spent rowing down stream = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$ = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$

Speed of boat up stream = $\textrm{Speed of boat in still water -Speed of current}= (x-10)\ ms^{-1}$

Distance rowed up stream = $\frac{1}{6} \textrm{ of distance rowed downstream}=\frac{1}{6}\times 2400 = 400\ m$

Time spent rowing up stream = $\frac{Distance}{Speed}=\frac{400}{x-10}\ s$

We know that,

$\textrm{Time spent rowing down stream =Time spent rowing up stream}$

So,

$\frac{2400}{x+10}=\frac{400}{x-10}$

Cross multiplying

$2400(x-10)=400(x+10)$

Dividing both sides by $400$

$\frac{2400(x-10)}{400}=\frac{400(x+10)}{400}$

$6(x-10)=x+10$

$6x-60=x+10$

Adding 60 to both sides.

$6x-60+60=x+10+60$

$6x=x+70$

Subtracting both sides by $x$

$6x-x=x+70-x$

$5x=70$

Dividing both sides by 5.

$\frac{5x}{5}=\frac{70}{5}$

∴ $x=14$

Speed of boat in still water $=14\ ms^-1$

Time spent rowing down stream = $\frac{2400}{14+10}=\frac{2400}{24}=100\ s$

3 0

3 years ago

Pls help me!!<br> Which two equations are equivalent?<br> y= 1/2x+3<br> y=x+6<br> 2y=x+6

Zigmanuir [339]

Answer:

first and third

Step-by-step explanation:

Consider

y = $\frac{1}{2}$ x + 3 ( multiply through by 2 )

2y = x + 6 ← third equation

4 0

3 years ago

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During which one week period did Sebastian save the Most money?

olchik [2.2K]

Week 1-2 so it would be week one

8 0

3 years ago

Select all that apply.

Kay [80]

Answer:

Isosceles and Scalene

Step-by-step explanation:

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