All categories

3 years ago

-(x + 2y + 3) - 3x + y X = 4 and y = -2

Mathematics

1 answer:

Alchen [17]3 years ago

6 0

Answer:

-17

Step-by-step explanation:

-(4+2(-2) +3) -3(4) -2

-(4-4+3)-3(4)-2

-3-3(4)-2

-3-12-2

-17

You might be interested in

Help!!!

nordsb [41]

Answer:

1 1/5 per person.

Step-by-step explanation:

You have to evenly divide the 6 funnel cakes among 5 people, so the equation you have to use is division.

5/6

= 1 1/5

6 0

3 years ago

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

Please help me out . :)

Veseljchak [2.6K]

Answer:

Only 1 pair of feet duhh and a few of the other things that are not in the same way as the same thing is true for the natives from the americas and now claim it as if it were ares to start with the same thing as the last time I was there and I was just wondering if you had any ideas on how to get a new one for the natives from the americas and now claim it as if it were ares to start with the same thing as the last time I was in there middle of school all as but it 4th 4images in a group and that will not have make of these days available until the next time week have the case or the natives time Europe and fend it will take place in a actuality for my new place job then the same time you

5 0

3 years ago

Read 2 more answers

Jori has 7 boxes of books, with each box holding the same number of books. He has 126 books in all. How many books are there per

nika2105 [10]

126/7 = 18

18 books per box

7 0

3 years ago

A student says that the graph of the equation y=3(x+8) is the same as the graph of y=3x, only translated upwards by 8 units. do

tino4ka555 [31]

Answer: