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Julli [10]
2 years ago
6

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.

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Lucy's pet snake eats 2 mice a week how many mice will she eat in 6 weeks
alexgriva [62]

What we know: Lucy's snake eat's 2 mice a week.

To find the answer, you'll have to multiply 2 by 6.

So, since Lucy's snake eats 2 mice a week for 6 weeks.

To find the amount of mice her snake has eaten in the past 6 weeks you'll have to multiply 2 and 6.

2x6=?

------------------------------------------------------------------

The first week the snake ate 2 mice.

The second week the snake ate 2 mice.

The third week the snake ate 2 mice.

The fourth week the snake ate 2 mice.

The fifth week the snake ate 2 mice.

The sixth week the snake ate 2 mice.

Your answer would be: 12

5 0
3 years ago
How many ways can the words in d-r-a-g-o-n-f-l-y be arranged
GarryVolchara [31]

Answer:

362880 ways

Step-by-step explanation:

The word dragonfly has 9 different letters.

So, to find how many ways this word can be arranged, we just need to calculate the factorial of 9:

First letter has 9 possibilities

Second letter has 8 possibilities (one used)

Third letter has 7 possibilities (two used), and so on.

So the number of ways is:

9*8*7*6*5*4*3*2*1 = 362880 ways

7 0
3 years ago
Find the value of x and y from ordered pair.<br>(x+y,2x-y)=(13,2)​
Katarina [22]

Answer:

x=5, y=8

Step-by-step explanation:

x+y=13

2x-y=2

add these two equations

3x=15

therefore x=5

apply this value in x+y=13

5+y=13

then y=13-5 = 8

8 0
3 years ago
Read 2 more answers
“I think of a number and divide it by 5. The answer is 20.”
muminat

Answer: 100

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What is the square root of 100?
natulia [17]

Answer:

10

Step-by-step explanation:

the answer is 10 because 100 divided by 10 is 10

Please mark Brainliest

3 0
2 years ago
Read 2 more answers
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