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
Alja [10]
3 years ago
15

17. The present age of a father and his son is 50yrs and 20yrs respectively. How many years ago

Mathematics
1 answer:
jasenka [17]3 years ago
3 0

Answer:

9 yrs ago

Step-by-step explanation:

(50-x)(20-x) = 451

x^2-70x + 1000 = 451

x^2-70x + 549 = 0

(x-9)(x-61) = 0

x = 9 (if it was 61 yrs ago, the father and son both wouldnt be a live)

You might be interested in
Marcy is making a hooked circle-shaped rug for her mother. The circumference of the circle-shaped rug is 56.52 inches.
Julli [10]
The answer is C you dived the circumference by 2 and use the formula for the area of a circle which is A = π × r^2
6 0
3 years ago
What is the common difference of the arithmetic sequence graphed below?
galben [10]
I think it’s -0.75. The x coordinate represents the term number so y would show the pattern which is -3.75, -4.5, -5.25, -6, -6.75, -7.5, -8.25, -9. To get to the next number, each term is being decreased by 0.75. Hope this helps :)
3 0
3 years ago
Read 2 more answers
Neeeddddddd help :/.......
Angelina_Jolie [31]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
If a position on the ocean floor is 12 kilometers below the sea level, which value describes the elevation of the ocean floor
LenKa [72]

Answer:

- 12

Step-by-step explanation:

The sea level serves as a reference point and may be used to describe objacetsvir positions above or below it. Therefore, the sea level is regarded as a zero point or level. Hence, objects below are describes to be at a negative distance while those above are assigned the positive sign. Hence, for a position which is 12 km below sea level, then the object is said to be at a distance of - 12 km (below sea level takes the negative sign.)

4 0
2 years ago
kevin was a product tester at texas instruments. he was dropping calculators from a height of 5 feet on to a concrete surface. h
Shtirlitz [24]

Answer:

80%

Step-by-step explanation:

1 in 5 breaks

1/5 is 20%

100%-20%=80%

Please mark as brainliest

4 0
3 years ago
Other questions:
  • There are 26 students in an algebra class. The number of girls in the class is one less than twice the number of boys. How many
    7·1 answer
  • 3x+4=43<br> Translate into a sentence
    11·2 answers
  • Solve 13 +4x = 3x - 15 for x
    12·1 answer
  • A store purchased a DVD for 12.00 and sold it to a costumer for 50 percent more than the purchase price. The costumer was charge
    9·1 answer
  • Eight dollars more than the amount Taini saved
    14·2 answers
  • What is the system of linear equations
    15·1 answer
  • Help, ive been stuck on this for 2 hours
    13·1 answer
  • Mel randomly selects a coin 200 times selecting a penny 45 times A. The experimental probability of 9 selecting a penny is 40 B.
    12·1 answer
  • Logan is a great babysitter. He makes $9 an hour. Jeanette is an even better babysitter. She makes $16 an hour. Jeanette works 1
    8·2 answers
  • A manufacturer uses a mold to make a part in the shape of a triangular prism. The dimensions of this part are shown below.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!