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2 years ago

10

Damon and Peter, who can paddle a canoe at 4 mi/hr in still water, took 8 hr to paddle 9 mi upstream and then return. What was t

he speed of the river's current to the nearest hundredth of a mile per hour?

1 answer:

wel2 years ago

4 0

Answer:

2 miles per hour

Step-by-step explanation:

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What is the equation of the line h Th ya has a y intercept of (0,-3) and passes through the point (-9,-9)

Nikolay [14]

Answer:

The line equation is given as: 3 y = 2 x - 9

Step-by-step explanation:

Here, Y intercept is at point ( 0.-3)

So, at x = 0, y = -3

or, C = -3

Also, the point on the equation line is (x,y) = (-9,-9)

Now, by <u>SLOPE INTERCEPT FORM</u> of a line equation,we get:

y = m x + C : m = slope of line ......... (1)

So, substituting the values of C and (x,y) , we get:

-9 = m (-9) + (-3)

or, -9 + 3 = - 9 m

or, m = -6/-9 = 2/3

or, m = 2/3

Now, substitute the value of m back in to the line equation (1)

$y = m x + C \implies y = (\frac{2}{3}) x - 3\\\implies 3y = 2x - 9$

Hence, the line equation is given as: 3 y = 2 x - 9.

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3 years ago

PLEASE HELP ME WITH THESE FOUR QUESTIONS TYSMMM!!! THANK YOU

Dima020 [189]

Answer:

$107^\circ, 133^\circ, 20^\circ, \text{and}, 23^\circ$

Step-by-step explanation:

9. For the lines 'm' and 'n' to be parallel the sum of interior angles should be 180 degrees that is:

$x+73^\circ=180^\circ$

$x=107^\circ$

10. For the lines 'm' and 'n' to be parallel the alternate exterior angles should be equal that is:

$147^\circ=x+14^\circ$

$x=147^\circ-14^\circ$

$x=133^\circ$

11. For the lines 'm' and 'n' to be parallel alternate angles should be equal that is:

$180^\circ-3x=2x+20^\circ$

Solving for 'x' we get:

$180^\circ-20^\circ=3x+2x$

$5x=160^\circ$

$x=32^\circ$

12. For the lines 'm' and 'n' to be parallel corresponding angles should be equal that is:

$(7x-11)^\circ=(4x+58)^\circ$

$7x-4x=58^\circ+11^\circ$

$3x=69^\circ$

$x=\frac{69}{3}=23^\circ$

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3 years ago

At Super Shopper a 1-litre bottle of cola costs £0.85.

Pavlova-9 [17]

Answer:

super shopper

Step-by-step explanation:

o.85/2=0.425

0.425*3=1.275

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2 years ago

Plot a point on the coordinate plane to represent each of the ratio values in the table.

Crank

Answer:

U almost got it right I posted the right answer below.

Step-by-step explanation:

The answer should be like this:

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3 years ago

8. Kamau and Mutisya started to walk from

Sphinxa [80]

Answer:

6080 cm OR 60.8m

Step-by-step explanation:

75 x 40 = 3000 cm

77 x 40 = 3080 cm

They are moving in perfectly opposite directions, which makes a straight line.

3000 + 3080 = 6080 cm = 60.8m

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3 years ago