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notsponge [240]
3 years ago
10

a boat travels 45 miles upstream (against the current) in 5 hours. the boat travels the same distance downstream in 3 hours. wha

t is the rate of the current?
Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0
Im not sure, thats a good question?
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8. Write the equation of the line that is parallel to the line 2x + 5y = 15 and passes through the
marissa [1.9K]

Answer:

\sf y = \bold -\frac{2}{5} x -3

Explanation:

part A identification for slope:

\sf 2x + 5y = 15

\sf 5y = -2x + 15

\sf y = \frac{-2x + 15}{5}

\sf y = -\frac{2 }{5} x+3

comparing with slope intercept form: y = mx + b

we can find that here the slope is \bold -\frac{2}{5}

part B, solving the equation:

if the line is parallel, then the slope will be same.

given coordinates: ( - 10, 1 )

using the equation:

y - y₁ = m( x - x₁ )

\sf y - 1 = \bold -\frac{2}{5} (x --10)

\sf y = \bold -\frac{2}{5} x -4 + 1

\sf y = \bold -\frac{2}{5} x -3

Extra information:

check the image below. this proves that the line is parallel and passes through point (-10, 1). the blue line is question line and red the answer line.

3 0
2 years ago
Read 2 more answers
For which value of x is the equation 6 = 12x true?
skad [1K]

Answer:

x = 0.5

Step-by-step explanation:

5 0
3 years ago
Select the property of equality used to arrive at the conclusion. If x - 3 = 7, then x = 10
goldenfox [79]
X - 3 = 7
add 3 to both sides
x - 3 + 3 = 7 + 3
x = 10

addition property of equality
4 0
3 years ago
12r <br> r=1/6<br><br> Please show your work
Flauer [41]

Answer:

Step-by-step explanation:

If m = 4, z = 9 and r = 1/6

1. 3 + m = 3 + 4 = 7

2. z - m = 9 - 4 = 5

3. 12r = 12 × 1/6 = 2

4. 60r - 4 = 60(1/6) - 4 = 10-4 = 6

5. 4m - 2 = 4(4) - 2 = 16-2 = 14

6 0
3 years ago
Hich of the following is a true statement about perpendicular lines?
IRISSAK [1]

Answer:

C.

perpendicular lines intersect in at least two points..

ok im not sure sorry

3 0
3 years ago
Read 2 more answers
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