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
ikadub [295]
3 years ago
9

A man is 65 years old and his grandson is 20. how many years ago was the grandfather six times as old as the grandson?

Mathematics
2 answers:
swat323 years ago
7 0
5 goes into 50 10 times, so it was less than 15 years ago. 10 goes into 55 5 and a half times, so it was greater than 10 years ago. At 6, the grandpa was about 8 times older. At 7, the grandpa was about 7 times older. At 8, the grandpa was almost 7 times older. At 9, the grandpa was exactly 6 times as old as the grandson. The grandson was 9 eleven years ago. So, your answer is 11. Hope that helps.
AnnZ [28]3 years ago
5 0
Five years ago i think
You might be interested in
In a sample of students, 12 out of 24 students in a class wanted a sandwich for lunch. Using the data from the sample, predict h
natka813 [3]

Answer:

200

Step-by-step explanation:

good luck :)

8 0
2 years ago
HELP PLEASE WILL GIVE BRAINLIEST
abruzzese [7]
Answer:
$1.21

Explanation:
What we know:
- $5.88=3 pounds of apples
- price went up by $0.75 per pound

First, we divide $5.88 by 3 to find out how much one pound of apples cost.

5.88/3
=1.96

Therefore, the new price of apples per pound is $1.96.

Because the old price of apples per pound was $0.75 cheaper, we subtract 0.75 from 1.96.

1.96-0.75
=1.21

Therefore, the old price of apples per pound was $1.21.

I hope this helps! Please comment if you have any questions.
7 0
3 years ago
Read 2 more answers
A brochure claims that the average maximum height for a certain type of plant is 0.7 m. A gardener suspects that this is not acc
larisa [96]

Answer:

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

Step-by-step explanation:

1. Relevant data:

\mu=0.70\\N=40\\\alpha=0.05\\X=0.65\\s=0.20

2. Hypotesis testing

H_{0}=\mu=0.70

H_{1} =\mu< 0.70

3. Find the rejection area

From the one tail standard normal chart, whe have Z-value for \alpha=0.05 is 1.56

Then rejection area is left 1.56 in normal curve.

4. Find the test statistic:

Z=\frac{X-\mu_{0} }{\sigma/\sqrt{n}}

Z=\frac{0.65-0.70}{0.20/\sqrt{40}}\\Z=-1.58

5. Hypotesis Testing

Z_{\alpha}=1.56\\Z=-1.58

-1.58

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

4 0
3 years ago
Sixty percent of vacationers enjoy water parks. Use technology to generate 20 samples of size 100. How closely do the samples es
alexandr1967 [171]

Answer:

I don't understand

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A major application of analytics in marketing is determining customer retention. Suppose that the probability of a long-distance
Marianna [84]

Hey! How are you? My name is Maria, 19 years old. Yesterday broke up with a guy, looking for casual sex.

Write me here and I will give you my phone number - *pofsex.com*

My nickname - Lovely

7 0
3 years ago
Other questions:
  • What is the length of BE?
    8·2 answers
  • 75 is 10 less than 85 what is the answer
    12·1 answer
  • Classify the following triangle
    12·2 answers
  • For which pair of lines are ∠1 and ∠2 alternate interior angles if d is the transversal?
    6·2 answers
  • The volume of the figure below is 496.21 ft^3<br> True or False
    14·1 answer
  • PLEASE PLEASE PLEASE HELP!!
    11·1 answer
  • How many solutions does 3x^2+11x+10=0 have
    14·2 answers
  • Which of the lists of letters all have rotational symmetry?
    14·1 answer
  • Please help it an emergency and I give Brainiest.
    14·2 answers
  • Write an equation of the line passing through the given points.<br> (3,-25) and (-3,5)<br><br> y=
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!