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3 years ago

In a half hour, Sarah is meeting her friends at the lake, 6 miles from her house. At what average speed must

Mathematics

1 answer:

Vladimir79 [104]3 years ago

4 0

Answer:

Divide 6 miles by 0.5 hour: 6/0.5 = 12 miles per hour.

Step-by-step explanation:

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Two arrows are launched at the same time with the same speed. arrow a at an angle greater than 45 degrees, and arrow b at an ang

valentina_108 [34]

Let V = the launch velocity
Let θ = the launch angle
Let d = the horizontal distance traveled

Ignore air resistance.

The horizontal component of velocity is
u = V cos θ
The time of flight is
t = d/(V cosθ) = (d/V) secθ

Create a table of θ versus t as shown below.
θ t/(d/V)
---- ----------
45 1.4142
40 1.3054
35 1.2208
30 1.1547

The graph shows that as the launch angle decreases below 45°, the time of flight decreases.
Therefore arrow b (θ < 45°) arrives first.

Answer: Arrow b arrives first.

6 0

3 years ago

Vincent has the following data:

Igoryamba

Step-by-step explanation:

it is 18 because 18 is greater than 17 and my aunt is a teacher and told me the answer

4 0

3 years ago

Drag each tile to the correct box

ValentinkaMS [17]

Answer:

Arranging the solutions from the least to the highest;

1. 1.743 x 10⁻²

2. 3.626 x 10⁻²

3. 4.64 x 10⁻²

4. 3.162 x 10²

5. 4.214 x 10³

Step-by-step explanation:

The solutions of the mathematical expression are calculated as follows;

$1. \ \ (4.3\times 10^6)(9.8\times 10^{-4}) = (4.3\times 9.8\times 10^{6-4}) = (42.14\times 10^2)= 4.214 \times 10^3$

$2. \ \ (2.9\times 10^7)(1.6\times 10^{-9}) = (2.9\times 1.6\times 10^{7-9}) = 4.64\times 10^{-2}$

$3. \ \ \frac{(4.7 \times 10^3)(8.6\times 10^{-7})}{(3.8\times 10^{-4})(6.1 \times 10^2)} = \frac{(4.7\times 8.6\times 10^{3-7})}{(3.8\times 6.1\times 10^{-4+2})} = \frac{4.042 \times 10^{-3}}{2.318\times 10^{-1}} = 1.743\times 10^{-2}$

$4. \ \ (4.9\times 10^3)(7.4\times 10^{-6}) = (4.9\times 7.4\times 10^{3-6}) = 3.626\times 10^{-2}$

$5. \ \ \frac{(3.9 \times 10^5)(8.7\times 10^{-3})}{(3.7\times 10^{-5})(2.9 \times 10^8)} = \frac{(3.9\times 8.7\times 10^{5-3})}{(3.7\times 2.9\times 10^{-4 +8 })} = \frac{3.393 \times 10^{-1}}{1.073\times 10^{-3}} = 3.162\times 10^{2}$

Arranging the solutions from the least to the highest;

1. 1.743 x 10⁻²

2. 3.626 x 10⁻²

3. 4.64 x 10⁻²

4. 3.162 x 10²

5. 4.214 x 10³

4 0

3 years ago

Read 2 more answers

Please help me!! 50 points!!!

Thepotemich [5.8K]

Answer:

I notice that it looks like a bunch of tiny triangles. I wonder why there is only one chip with hot on it. It reminds me of a pie chart used to write down data.

Step-by-step explanation:

hope that helps you :)

5 0

3 years ago

Read 2 more answers

What is the length of segment HK?

Andre45 [30]

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