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labwork [276]
3 years ago
6

alex has a 48 mile trail first half of the time he was biking twice as fast as the second half of the time if he spent 4 hours o

n the road how fast was he biking at first
Mathematics
1 answer:
Irina-Kira [14]3 years ago
4 0

Answer:

16 mph

Step-by-step explanation:

Givens:

4 hours total time

48 miles total distance

So our equation should look like this.

48 = 2x(2) + x(2)

Where x = speed second half of trip.

x = 8

x*2 = 16 mph

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Round 24,347 to the nearest thousand.
hodyreva [135]

Answer:

24000

Step-by-step explanation:

7 0
2 years ago
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Old McDonald has a farm with 36 cows and goats the number of cars he has 10 more than the number of coats how many of each anima
Vanyuwa [196]

Answer:

13 goats and 23 cows

Step-by-step explanation:

Use x to solve :) it's a hint

3 0
3 years ago
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Five times a number is 6 more than two times the number
34kurt

Answer:

5x= 2x+6

Step-by-step explanation:

5 times a number= 5x

2 times the number=2x

6 more= +6

7 0
2 years ago
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He football team has 30 more members than the basketball teams. If each group had 10 more members, the ratio of their membership
aivan3 [116]

We know that x = 30 + y, because the problem says that there are 30 more football players than basketball players.

Each group has 10 more members added: x + 10 and y + 10. We can write x + 10 as 30 + y + 10 or 40 + y.

The ratio (40 + y)/(y + 10) = 3/2. You can cross multiply to get:

80 + 2y = 3y + 30

Combine like terms to get:

y = 50 members on the basketball team. Since there are 30 more members on the football team, you just add 30 to 50 to get x = 80 members on the football team.

7 0
3 years ago
The area if a rectangular frame is 32 square inches. The perimeter of the frame is 24 inches. Which shows the correct dimensions
Zarrin [17]

Answer:

8 x 4

Step-by-step explanation:

Lets say the length is x and the width is y.

xy = 32

2x + 2y = 24

Rearranging the second equation, we get:

2x = 24 - 2y

/2         /2

x = 12 - y

substitute into the first equation

y(12 - y) = 32

12y - y^2 = 32

-32             -32

-y^2 +12y - 32 = 0

x -1                      x -1

y^2 - 12y + 32 = 0

(y - 8)(y - 4) = 0

y = 8 or 4

substitute into x = 12 - y.

x = 12 - 8 = 4

x = 12 -4 = 8

so the correct dimensions are 4 x 8, as either x = 4 and y =8, or x = 8 and y = 4.

Hope I helped!

8 0
2 years ago
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