All categories

2 years ago

Read the word problem below.

Mathematics

2 answers:

salantis [7]2 years ago

5 0

Answer:

1 3/5 miles/hr

Step-by-step explanation:

Let C be the speed of the current

Let D be the distance between Chan's house and the park

We know that Distance, D, is = Speed x Time

-----

Chan's speed going upstream is (8 - C)mph.

That gives us:

D = (8-C)(3 hr)

Chan's speed going downstream is (8+C)mph

So we have:

D = (8+C)(2 hr)

We know that the d is the same for these two equations, so:

(8-C)(3 hr) = (8+C)(2 hr)

24 - 3C = 16 + 2C

5C = 8

C = (8/5) or 1 3/5 mph

Anon25 [30]2 years ago

5 0

Answer:

1.6 mph

Step-by-step explanation:

Distance, speed, and time are related by ...

distance = speed × time

We assume that the distances up and back are the same, so for a current speed of c, we have ...

3(8 -c) = 2(8 +c)

24 -3c = 16 +2c . . . eliminate parentheses

8 = 5c . . . . . . . . . . add 3c-16 to both sides

c = 8/5 = 1.6 . . . . . divide by 5

The speed of the current is 1.6 miles per hour.

You might be interested in

For f(x) = 0.02(2)^x find the average rate of change from x= 3 to x= 8

Fudgin [204]

None of the offered choices is correct.

f(3) = 0.02·2³ = 0.02·8 = 0.16

f(8) = 0.02·2⁸ = 0.02·256 = 5.12

Then the average rate of change is

... (f(8) - f(3))/(8 - 3) = (5.12 -0.16)/5 = 4.96/5 = 0.992

5 0

3 years ago

Sarah’s neighbor offers to pay her $5 for every shark tooth she finds on the beach. After collecting only three shark’s teeth, S

nalin [4]

o o o oh here we go walking talking like a

Step-by-step explanation:

lol
$852x2 \leqslant 5y6\%$

8 0

3 years ago

Which graph represents y as a function of x? <br> A) A <br> B) B <br> C) C <br> D) D

Arlecino [84]

Answer:

where is the graph if you can put it i will give you the answer

Step-by-step explanation:

8 0

3 years ago

Find the length of line segmentAB which joins the following points.A(10, 14) and B(2,6)

Helen [10]

Answer:

The equation of the line AB is y - x -4 = 0

Step-by-step explanation:

The points are A (10,14) and B(2,6)

Now, slope of the line AB : $m = \frac{y_2 - y_1}{x_2 - x_1}$

or, $m = \frac{14 -6 }{10 - 2}$ = $\frac{8}{8} = 1$

So, slope of the equation AB = 1

Now, by SLOPE INTERCEPT FORM:

The equation of line is given as : y - y0 = m (x-x0)

So,the equation of line AB is y - 6 = 1(x-2)

or, y - 6 -x + 2 = 0

or, y - x -4 = 0

Hence, the equation of the line AB is y - x -4 = 0

5 0

3 years ago

Every person has blood type O, A, B, or AB. A random group of people are blood-typed, and the results are shown in the table.

Evgesh-ka [11]

Answer:

12%

Step-by-step explanation:

$P=\frac{6}{22+20+6+2} =.12$

6 0

3 years ago