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
Oxana [17]
3 years ago
15

An astronaut weighs 170 pounds on Earth but only 68 pounds on Mars. While visiting the planet, the astronaut removes a rock samp

le that weighs 25 pounds on Mars.
What is the weight of the rock sample on Earth?
Help me solve.


a. 0.22
b. 4
c. 0.5
d. not enough info.
Mathematics
2 answers:
Serjik [45]3 years ago
6 0

Answer: 62.5 pounds

Step-by-step explanation:

Given: An astronaut weighs 170 pounds on Earth but only 68 pounds on Mars.

The weight of the rock sample on Mars = 25 pounds

Since the  "Weight of object on Mars"is directly proportional to "Weight of object on Earth".

\Rightarrow\ \dfrac{\text{Weight of rock sample on Earth }}{\text{Weight of rock sample on Mars}}=\dfrac{\text{Weight of astronaut on Earth}}{\text{Weight of astronaut on Mars}}\\\\\\\Rightarrow\ \dfrac{\text{Weight of rock sample on Earth }}{25}=\dfrac{170}{68}\\\\\\\Rightarrow\ \text{Weight of rock sample on Earth }=\dfrac{170\times25}{68}=62.5

Hence, the eight of the rock sample on Earth = 62.5 pounds

kipiarov [429]3 years ago
4 0
The ratio of the man's weights on Earth and Mars should be equal to the ratio of the rocks weight on Earth and Mars. By letting x be the stone's weight on Earth, the equation that best describe the condition is,
                      (170 pounds / 68 pounds) = (x pounds / 25 pounds)
The value of x is 62.5 pounds. If the units of the choices in the pounds then, it is not among the choices. 
You might be interested in
i need help with a math problem right now it says A car rental agency advertised renting a car for $23.95 per day and $0.25 per
JulijaS [17]
Trevor rents the car for 3 days and there’s a $23.95 fee per day, so that would already add up to $71.85. If you subtract the $71.85 from your $100 budget you will have $28.15,and now you divide that by .25 because it’s 25 cents per mile and all you have left is $28.15 and you will get 112.6,but the whole miles Trevor can drive are 112
3 0
3 years ago
In△XYZ , XY¯¯¯¯¯¯=7in , YZ¯¯¯¯¯=5in , and XZ¯¯¯¯¯=4in . This triangle is reflected across the x-axis to result in △X'Y'Z' . Whic
ki77a [65]

Answer:

B

Step-by-step explanation:

Reflection is a transformation that preserves lengths.

Triangle XYZ, with side lengths XY = 7 in, YZ = 5 in, XZ = 4 in, is reflected across the x-axis to result in △X'Y'Z'.

This means that corresponding sides have the same lengths:

  • XY = X'Y' = 7 in;
  • XZ = X'Z' = 4 in;
  • YZ = Y'Z' = 5 in.

Find the perimeters of both triangles:

P_{XYZ}=XY+XZ+YZ=7+4+5=16\ in\\ \\P_{X'Y'Z'}=X'Y'+X'Z'+Y'Z'=7+4+5=16\ in

Hence, only option B is true.

8 0
3 years ago
Your friend says that 14.5% is equivalent to the decimal 14.5. explain why your friend is incorrect by comparing the fractional
adoni [48]
14.5% = 0.145 = 145/1000

14.5 = 14500/1000

So 14.5% is a hundredth the size of 14.5, so they are not equal and the friend is incorrect.
7 0
3 years ago
Jack has 35 pages to read by the end of the day. He
Lisa [10]

Answer:

your answer is H

Step-by-step explanation:

8 0
3 years ago
Write 47 and 1000 as a decimal
Marrrta [24]
47 is equal to .47 and 1000 is equal to 1

have a great day ♡
8 0
3 years ago
Read 2 more answers
Other questions:
  • to subtract 178-135 mentally, carmine adds 5 to each number. karen adds 2 to each number. will both methods work to find the cor
    12·2 answers
  • If a professional basketball player earns $3 million playing 125 games per year and plays an average of 40 minutes per game, how
    13·1 answer
  • A prism has a volume of 4374 ft3. What is its volume in yd3
    10·1 answer
  • Is -2/5 irrational or rational and why???
    5·1 answer
  • The system of inequalities below describes the relationship between Cori’s age, C, and Livy’s age, L. DOK 2
    5·2 answers
  • What is 24.012 divided by 6 with the work
    5·1 answer
  • Red: y = 7x
    12·1 answer
  • Writing a linear equations
    10·1 answer
  • What’s the volume of the cake if the radius is 8 inches<br> and the height is 5 inches?
    9·1 answer
  • Translate this phrase into an algebraic expression.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!