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xeze [42]
3 years ago
12

Will someone help me with these 2 questions please?

Mathematics
1 answer:
masya89 [10]3 years ago
4 0
1. Use pythagoras theory
(7.1)^2 + (3.4)^2 = AB^2
AB = 7.87 (3 sig figures ) (check answer in calculator )

2. Use trigonometry
Tan(x)=opp/adj
Tan(x)=13.4/3.7
X=tan^-1 (13.4/3.7)
X= 74.6
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A railroad crew can lay 7 miles of track each day. They need to lay 203 miles of track. The length, L (in miles), that is left t
swat32

Answer:

It will take 29 days to lay the track

After 18 days the crew still has 77 miles of track left to lay

Step-by-step explanation:

203÷7

=29 days

L= 203 - 7(18)

L= 203 - 126

L= 77

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3 years ago
What is the next term of the following sequence? 20, 10, 5, 2 1/2, ... 1 1/2 1 1/4 3/4
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10\2=5
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Directions: Solve for x in the inequalities below. Graph and check your solution.
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Answer:

hi

Step-by-step explanation:

7 0
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A ladder reaches the top of a 20 foot building. the ladder is 4.5 feet away from the building. how long is the ladder?
KATRIN_1 [288]

Answer:

C

Step-by-step explanation:

do that with pithagoras:

20² + 4,5² = x²

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x = \sqrt{420,25}

x ~ 20,5

Letter C: 20,5 feet

4 0
3 years ago
Estimate 200,629 +28,542
Alinara [238K]
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3 years ago
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