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labwork [276]
2 years ago
11

Answer to this math problem

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
4 0
Subsitute 1/3 for t

18(\frac{1}{3})^2=18(\frac{1}{9})=\frac{18}{9}=2
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A 100-meter-long christmas train needs 30 seconds to cross a 400-meter-long bridge. assuming the train goes at a steady speed, h
san4es73 [151]
Length of train : 100
length of bridge : 400
distance covered by the train to cross the bridge : (100 + 400) = 500
time taken by the train to cross : 30

speed = distance / time
speed = 500/30
speed = 16.67 meters per second <===
8 0
3 years ago
The area of a square is 15.1 units². Estimate the length of the sides. Explain how you estimated.
kykrilka [37]

If it is just an estimate then it would be around <em>4</em>. 15.1 is pretty close to 16 which has a perfect square root of 4. Since it is a square both length and width would be the same. To check it you can just square 4 or 4 times 4 and get 16. Hopefully I helped! And sorry if I am wrong.

BTW the exact answer would be 3.88~ (square root of 15.1) just incase you needed that. :)

6 0
3 years ago
Identify the domain and range of y = 4x - 5 + 3
Zepler [3.9K]

Answer:

\huge\boxed{\text{Domain:}\ D=\mathbb{R}=(-\infty;\ \infty)}\\\boxed{\text{Range:}\ R=\mathbb{R}=(-\infty;\ \infty)}

Step-by-step explanation:

y = 4x - 5 + 3 = 4x - 2

It's an equation of a line in the slope-intercept form.

y = 4x - 2 → f(x) = 4x - 2 - it's a lienar function.

The domain of a linear function is the set of all real numbers.

If a slope of linear function is different than 0, then the range is the set of all real numbers.

5 0
3 years ago
What is addition number
Nimfa-mama [501]
Adding is where you added, or put something with, a number.
4 0
3 years ago
Read 2 more answers
The length of a rectangle is 5 more inches more than the width. The perimeter is 46 inches. Find the length and the width.
natta225 [31]

Answer: w = 9 inches

              w + 5 = 14 inches

Step-by-step explanation:

5 0
2 years ago
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