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frutty [35]
3 years ago
6

Please help! I will mark as brainliest IF answer is right. <3

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0
A: 20n+40250
B: 35n+35000
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Please help me. please help me​
Delicious77 [7]
The answer is 38.1.078125
3 0
3 years ago
The table shows a car's speed as it accelerates. What is the average rate of change between seconds 1 and 3?
irina [24]

Answer:

9

Step-by-step explanation:

the speed increases 9 mph a second

6 0
3 years ago
The perimeter of
lana66690 [7]
2,500 feet is the answer to your question. hope this helped
5 0
3 years ago
Read 2 more answers
An airplane flew with the wind for 2.5 hours and returned the same distance against the wind in 3.5 hours. If the cruising speed
KengaRu [80]

Answer:

60 miles per hour.

Step-by-step explanation:

Let r represent speed of wind blowing in miles per hour.          

We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be 360+r.

The speed of the plane is the opposite direction of wind would be 360-r.

\text{Distance}=\text{Speed}\times \text{Time}

Distance covered in the direction of wind would be 2.5(360+r).

Distance covered in the opposite direction of wind would be 3.5(360-r).

Since both distances are same, so we will get:

2.5(360+r)=3.5(360-r)

900+2.5r=1260-3.5r

900-900+2.5r+3.5r=1260-900-3.5r+3.5r

6r=360

\frac{6r}{6}=\frac{360}{6}

r=60

Therefore, the wind is blowing at a rate of 60 miles per hour.

6 0
3 years ago
A post 4 feet tall casts a shadow 3.5 feet long. A tree at the same time of day casts a shadow 24.5 feet long. Find the height o
noname [10]
Answer: The Tree is 28 ft tall

How do we know this. To solve this problem we can use proportions.

4 
→ 3.5

x → 24.5

So now our unit number can be found doing 24.5 ÷ 3.5 = 7 So x ÷ 4 must also equall 7. 

We can make equation: x ÷ 4 = 7

Know we can use our knowledge of finding x.

x = 7 × 4
x = 28

The tree is 28 ft tall.

Lets check our answer!

4 
→ 3.5

28 → 24.5

4 * 7 = 28

3.5 * 7 = 24.5


8 0
3 years ago
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