1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
barxatty [35]
4 years ago
13

Suppose a railroad rail is 3 kilometers and it expands on a hot day by 20 centimeters in length. Approximately how many meters w

ould the center of the rail rise above the ground?
I aim having difficulty completing this question. Please help
Mathematics
1 answer:
siniylev [52]4 years ago
4 0

Answer:

sadfasdfasdfasdf

Step-by-step explanation:

asdfasdfasdfsadfsadfsadfsdfsdfsaf

You might be interested in
Two consecutive even whole numbers are selected. The difference between the reciprocals of the two numbers is 1/40. determine th
nevsk [136]

Answer:

2 numbers could be 10 and 12 

or - 12 and - 10 

Step-by-step explanation:

let the 2 numbers be x and x + 2

since they are 2 consecutive even numbers, the difference between them is 2

the difference between the reciprocals is 1/60 


we have to mulitply the 2 denominators x and (x+2) to get a common denominator for the 2 fractions 

= 

we can then remove the brackets from the numerator and denominator 


and then cross multiply

60 * 2 = x² + 2x

120 = x² + 2x

x² + 2x - 120 = 0

we have a quadratic equation which needs to be solved 

x² + 12x - 10x - 120 = 0

x (x + 12) - 10(x + 12) = 0

(x - 10) (x + 12) = 0

x - 10 = 0     or   x + 12 = 0

x = 10                x = -12



8 0
3 years ago
Line l contains points(-2,1) and(4,1) point p has coordinates (5,7)
amm1812
Line l:
1 = - 2 m + b  / + ( - 1 )
1 = 4 m + b
----------------------
- 1  = 2 m - b
+
  1 = 4 m + b
--------------------
  0 = 6 m;  m = 0
  1 = 0 + b,  b = 1
 Line l:
  y = 1
The distance from point P to line l:
7 - 1 = 6
Answer: 6 units.
6 0
3 years ago
If am angle is 39 degrees what is the measure of it complement
Neko [114]

well complementary angles are 90 and 90, so this means that we have to equal 90 degrees.

39+x=90

90-39= 51

x= 51

7 0
3 years ago
Read 2 more answers
Solve this ASAP 12/y equals 4/3
OLEGan [10]

Answer:

y=9

hope this helps

have a good day :)

Step-by-step explanation:

4 0
3 years ago
Bags of popcorn cost $0.50 each, and bags of chips cost $0.75 each. The equation 0.50x + 0.75y = 10 represents the number of pop
kupik [55]

Answer:

20

Step-by-step explanation:

If no chips are bought, then:

0.5x + 0.75(0) = 10

0.5x = 10

x = 20

3 0
3 years ago
Other questions:
  • (d) Given: AB = 4; in and AC = 3<br> Find: The length of BC or BC<br> What the answer??
    14·1 answer
  • Ronna answered 18 of the 20 questions on her second math test correctly. On the first test, she had answered only 15 of 20 quest
    7·1 answer
  • What is .17 as a fraction?
    8·2 answers
  • 500 divided by 18.75
    12·2 answers
  • Evaluate 12∣∣−x+3∣∣−5 when x = 11.
    7·1 answer
  • The amusement park sells both adult and child tickets. 4 adult tickets are sold for every 9 child tickets. if the park sells 312
    7·1 answer
  • Combine and simplify the following radical expression.
    7·2 answers
  • Jason's Fahrenheit thermometer was broken. He wanted to know whether he should put shorts on or a winter coat. He had a Celsius
    6·1 answer
  • Given the equation y= -1/3x - 10, find the value of y when x is -9
    8·1 answer
  • What is the volume, in cubic cm, of a rectangular prism with a height of 10cm, a width of 20cm, and a length of 11cm??
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!