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Naddik [55]
2 years ago
9

To complete a train track, 66 wood ties are needed at one end, and 129 wood ties are needed at the other end. The track builders

want to have a few extra ties in case any split or have knots in them. They put in an order for enough ties to finish the train track.
Which statement is correct?

A.
The builders should order the exact number of ties they need which is 66 and 129.

B.
The builders should estimate that they need 70 + 130 ties and order 200 ties.

C.
The builders should estimate that they need 60 + 130 ties and order 190 ties.
Mathematics
2 answers:
Bezzdna [24]2 years ago
8 0
They want to put extra
so round them up and add them
66 rounded up to ten is 70
129 rounded up is 130
added we get 200
B is answer
Mashutka [201]2 years ago
3 0
The correct answer would be B because in the question, it states that the builders would like to have a few extra ties in case any breaks or the sort. A definitely wouldn't be correct because we're not getting any extra, and C is rounding down, which means that we won't have enough to finish the track. The remaining answer is B.
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The area that lies between Z=-2.61 and Z=0 is
muminat

Answer:

2.61

Step-by-step explanation:

To find the amount of space between the two points, subtract -2.61 from 0.

0 - (-2.61)       Distribute the negative

0 + 2.61          Add

2.61

8 0
3 years ago
Pleas help me find the answer and show the work to this question
lions [1.4K]

Answer:

Leg\ 1 = 8

Leg\ 2 = 15

Step-by-step explanation:

Given: See Attachment

Required

Determine the length of the legs

To do this, we apply Pythagoras theorem.

Hyp^2 = Adj^2 + Opp^2

In this case:

17^2 = x^2 + (2x- 1)^2

Open Bracket

17^2 = x^2 + 4x^2- 2x-2x + 1

17^2 = 5x^2 - 4x + 1

289= 5x^2 - 4x + 1

Collect Like Terms

5x^2 - 4x + 1 - 289 = 0

5x^2 - 4x - 288 = 0

Solving using quadratic formula:

x = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}

So:

x = 8 or x = -7.2

Since, x can't be negative, then:

x = 8

One of the leg is:

Leg\ 1 = x

Leg\ 1 = 8

Leg\ 2 = 2x - 1

Leg\ 2 = 2*8 - 1

Leg\ 2 = 16 - 1

Leg\ 2 = 15

6 0
2 years ago
Find the domain of the following relation. <br> R={(19,96),(20,101),(21,106),(22,111)}
mafiozo [28]
(x, y)

The domain are all the x-values, the range are all the y-values.

R={(19,96),(20,101),(21,106),(22,111)}

The domain is: 19, 20, 21, and 22
The range is: 96, 101, 106, and 111
7 0
2 years ago
Read 2 more answers
David is going to install tiles on the floor of two rooms. One of the floors is 18 feet long by 12 feet wide. The other floor is
crimeas [40]
Dimension of one of the floors of one room that David wants to install tiles is 18feet long by 12 feet wide
Then
Area of the above room = 18 * 12 square feet
                                       = 216 square feet
Dimension of the floor of the other room that David wants to install tiles is 24 feet long and 16 feet wide
Then
Area of the other room = 24 * 16 square feet
                                     = 384 square feet
Then
The total square feet of the
rooms that David wants to install tiles = 216 + 384
                                                             = 600 square feet
Cost of the tile that covers 1 square feet = $5
Cost of the 4 tiles that cover 4 square feet = $17
Then  
Area that can be covered with 4 square feet of tiles = 600/4 square feet
                                                                                  = 150 square feet
Minimum cost of covering
the two rooms that David wants to install tiles = 150 * 17 dollars
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So the minimum cost of installing the tiles on the two floors of David's two rooms is $2550. I hope the procedure is simple enough for you to understand.            
8 0
3 years ago
What is the measure of angle 2 in degrees?
earnstyle [38]

Answer:

The measure of angle 2 is... 60 degrees.

Angle 1 - 93 degrees

Angle 2 - 60 degrees

Angle 3 - 27 degrees

8 0
2 years ago
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