4 years ago

X=3 and y=5 can someone help me understand this plz

Mathematics

1 answer:

geniusboy [140]4 years ago

4 0

4*5-3=17
The answer is 17

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ritu can row downstream 20km in 2 hrs and upstream 4km in 2 hrs. find the speed of rowing in still water and the speed of the cu

Marina CMI [18]

Answer:

Speed of boat in still water is 6km/h

Speed of current is 4km/h

Step-by-step explanation:

We know speed = distance / time

Let the speed of boat in still water be x

Let the speed of current be y

Hence the speed of boat, down stream = $x+y$

Distance downstream = 20km

Time taken = 2 hours

We have

$x+y=\frac{20}{2}$

$x+y=10$ ......(1)

Speed of boat upstream = $x-y$

Distance upstream = 4

Time taken = 2

We have

$x-y=\frac{4}{2}$

$x-y=2$ ...(2)

Adding (1) & (2)

$2x=12$

$x=6$

Substituting in (1) we get

$y=4$

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3 years ago

Convert to proper fraction or mixed number (do not reduce to lowest terms): .851

Veronika [31]

Just look at where the 1 is at and then divide it by the place value. The 1 is in the thousandths place so the fraction would look like the following

$\frac{851}{1000}$

7 0

3 years ago

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HELP! WILL MARK BRAINLIEST IF CORRECT!

mariarad [96]

I think it’s 25???? i tried haha

8 0

3 years ago

Graph the following features <br> Y-intercept = 2 <br> Slope = -2/5

algol [13]

Answer:

Step-by-step explanation:

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3 years ago

D • (-4) = 32 solve for d

RSB [31]

Answer:

d = -8

Step-by-step explanation:

Isolate the variable, d. Note the equal sign, what you do to one side, you do to the other. Divide -4 from both sides of the equation:

$d * -4 = 32\\\frac{d * -4}{-4} = \frac{32}{-4}\\d = \frac{32}{-4}\\d = -8$

d = -8 is your answer.

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2 years ago

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