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Butoxors [25]
3 years ago
14

The current on the Mississippi River is a constant 4 miles per hour. A paddleboat travels 48 miles upstream in the same amount o

f time that it takes to travel 72 miles downstream. Find the speed of the boat in still water.
Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0
Upstream-44
Downstream-68
I think
Yanka [14]3 years ago
6 0
Divide each mile amount by the speed of the current (48/4=12 and 72/4=18) add the two numbers (12+18=30)  The speed of the boat is 30mph
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A college student takes the same number of credits each semester. She had 9 credits when she started, and after 6 semesters, she
NeX [460]

Answer:

18 credits per semester

Step-by-step explanation:

7 0
3 years ago
A rectangular safe can hold 5184 cubic inches. Gold bars that are 3 inches by 6 inches by 2 inches fit to completely fill the sa
S_A_V [24]

Answer:

144 gold bars

Step-by-step explanation:

first you fine the area gold bars take up in cubic inches by multiplying the 3, 2, and 6 to get 36

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3 years ago
Find the value of each variable.
sineoko [7]

Answer:

19. x = 65

20. x = 12

21. x = 35, y = 85

Step-by-step explanation:

19. 2x -10 = 120

2x (-10 + 10) = (120 +10)

2x/2 = 130/2

x = 65

20. 2x + 4x + 108 = 180

6x + (108 - 108) = (180 - 108)

6x/6 = 72/6

x = 12

21. 2x + 25 = 3x - 10

2x + (25 - 25) = 3x (- 10 - 25)

(2x - 3x) = (3x - 3x) - 35

-x/-1 = -35/-1

x = 35

3x - 10 + y = 180

3(35) - 10 + y = 180

105 - 10 + y = 180

(95 - 95) + y = (180 - 95)

y = 85

7 0
4 years ago
1. Name a pair of angles for each of the following. (Lesson 1)
gtnhenbr [62]

Answer:

I can't see the angle.

Step-by-step explanation:

I can't see the angle.

7 0
3 years ago
A water wheel has a radius of 18 feet. the wheel is rotating at 5 revolutions per minute. find the linear speed, in feet per min
makkiz [27]

Answer:

The linear speed is

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

we have

substitute

step 2

Find the linear speed in feet per minute

we know that

The wheel is rotating at 10 revolutions per minute

Convert revolutions to feet

Remember that

One revolution is equal to the circumference of the circle

so

10 revolutions is equal to

therefore

The linear speed is

8 0
3 years ago
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