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Serjik [45]
3 years ago
14

This helicopter has a rotor that moves at a rate of 600 spins per minute while flying. Which statement is supported by this info

rmation
Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

Answer: d. The helicopter rotor will spin 36,000 times in 1 hour

Step-by-step explanation:

Option A is wrong because in 40 minutes the rotor will spin:

= 40 * 600

= 24,000 times

Option B is wrong because we cannot know the number of times the rotor will spin before being lifted off of the ground with the details given.

Option C is wrong because in 3 hours the rotor will spin:

= 600 * 3 * 60 minutes

= 108,000 times

Option D is correct because in 1 hour the rotor will spin:

= 600 * 1 * 60 mins

= 36,000 times

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Help please its URGENT!!!!!!!!
Aneli [31]

This is a relation but not a function.

Functions must have that there is a unique y for a given x, which clearly doesn't work here because all lines of a given x have 2 y-values. However, it is a relation because there is a given set of points which are defined to be within the set of the ellipse (if it's defined which members of two sets, the range and domain, go together, then you have a relation)

4 0
3 years ago
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Let U={q, r, s, t, u, V, W, X, Y, Z},
trapecia [35]

Answer:

Ooh is theis unions I did it but

3 0
2 years ago
(50pts)Solve for x:<br><br> a<br><br> 7.125<br> b<br><br> 6<br> c<br><br> 8<br> d<br><br> 4.125
Monica [59]

Answer:

b. 6

Step-by-step explanation:

(16x + 9) \degree = 105 \degree \\(corresponding \:  \angle s)  \\ \\16x + 9 = 105 \\  \\ 16x = 105 - 9 \\  \\ 16x = 96 \\  \\ x =  \frac{96}{16}  \\  \\ x = 6

4 0
3 years ago
Read 2 more answers
Line 1: 2x-3y&gt;12
nata0808 [166]

Answer:

  • The graph of this line i.e. 2x-3y>12 should be BELOW the DOTTED line as y involves < symbol.
  • The graph of this line i.e. y>-2x+5  should be ABOVE the DOTTED line as it involves > symbol.
  • The correct graph for line 1  and line 2 is shown in attached figure.

Step-by-step explanation:

  • If the inequality involves < or >, then the graph of the equation involves a dotted line.  
  • If the inequality involves ≤ or ≥, then the graph of the equation involves a solid line.

<em>Considering the line 1</em>

2x-3y>12

Solving line 1

2x-3y>12

-3y>12-2x

3y

y

As y involves < symbol, so the graph of this line should be BELOW the DOTTED line.

But, as you can see that there is an error in the graph. As the graph of  y is being shown ABOVE the SOLID line.

Therefore, the graph of this line i.e. y should be BELOW the DOTTED line as it involves < symbol.

<em>Considering the line 2</em>

y>-2x+5

As y>-2x+5 involves > symbol, so the graph of this line should be ABOVE the DOTTED line.

But, as you can see that there is an error in the graph. As the graph of  y>-2x+5 is being shown ABOVE the SOLID line.

Therefore, the graph of this line i.e. y>-2x+5 should be ABOVE the DOTTED line as it involves > symbol.

The <em>correct graph</em> for line 1 i.e. 2x-3y>12 and line 2 i.e. y>-2x+5 is shown in <em>attached figure</em>.

From the attached graph, it is shown that only (5, -2) satisfies the both inequalities. So, (5, -2) is the correct solution for the given inequalities.

<em>Solution Verification:</em>

<u><em>Putting (5, -2) in line 1 and line 2</em></u>

For line 1:

2x - 3y > 12 ⇒ 2(5) - 3(-2) > 12 ⇒ 10 + 6 > 12 ⇒ 16 > 12 which is true.

For line 2:

y > -2x + 5 ⇒ -2 > -2(5) + 5 ⇒ -2 > -10 + 5 ⇒ -2 > -5 which is true.

So, (5, -2) is IN the solution for line 1 and line 2

<em><u>Putting (-1, -1) in line 1 and line 2</u></em>

For line 1:

2x - 3y > 12 ⇒ 2(-1) - 3(-1) > 12 ⇒ -2 + 3 > 12 ⇒ 1 > 12 which is false.

For line 2:

y > -2x + 5 ⇒ -1 > -2(-1) + 5 ⇒ -1 > 2 + 5 ⇒ -1 > 7 which is false.

So, (-1, -1) is NOT in the solution for line 1 and line 2

<em><u>Putting (0, 5) in line 1 and line 2</u></em>

For line 1:

2x - 3y > 12 ⇒ 2(0) - 3(5) > 12 ⇒ 0 - 15 > 12 ⇒ -15 > 12 which is false.

For line 2:

y > -2x + 5 ⇒ 5 > -2(0) + 5 ⇒ 5 > 0 + 5 ⇒ 5 > 5 which is false.

So, (0, 5) is NOT in the solution for line 1 and line 2

<em />

<em>Keywords: inequality, solution, graph, dotted line, solid line</em>

<em>Learn more about inequality solution from brainly.com/question/12036085</em>

<em>#learnwithBrainly</em>

4 0
3 years ago
What is the value of 30-2(7+2)-1
disa [49]
First follow the order of operations so do the parentheses first.
30-2(7+2)-1
30-2(9)-1
Then multiplication
30-18-1
Then left to right
12-1
Then again
So your answer is 11

Hope that helps.  Feel free to ask any questions.
7 0
3 years ago
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