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
Nata [24]
3 years ago
10

1. You can do 90 sit-ups in 2 minutes. Your friend can do 135 sit-ups in 3 minutes. Do these rates form a proportion? Explain

Mathematics
1 answer:
beks73 [17]3 years ago
7 0

Answer:

1. The relation is proportional.

2. The ratio of quarters and to dimes will not remain 5 : 3.

3. y = 6 + x, Hence, not proportional.

Step-by-step explanation:

1. I can do 90 sit-ups in 2 minutes and my friend can do 135 sit-ups in 3 minutes.

If we consider t as the time in minutes and n as the number of sit-ups, then we can write (2,90) and (3,135) as two ordered pairs.

So, the relation between t and n will be

\frac{n - 135}{135 - 90} = \frac{t - 3}{3 - 2}

⇒ n = 45t

Therefore, the relation is proportional.

2. The initial ratio of quarters to dimes was 5:3. If I add the same number of quarters and dimes to it then,

a) The ratio of quarters and dimes will not still be 5 : 3.

b) Let, the number of quarters was 5 then the number of dimes was 3. {As the ratio was 5 : 3}

Now, we add 3 new quarters and 3 new dimes in the collection. then, finally, the number of quarters will be (5 + 3) = 8 and the number of dimes will become (3 + 3) = 6.

Therefore, the new ratio will become 8 : 6 = 4 : 3 which is not equal to 5 : 3.

3. I am 13 years old, and my cousin is 19 years old.

So, if my age is given by x and that of my cousin is y, then

y - x = 19 - 13

⇒ y - x = 6

⇒ y = 6 + x

This relation will continue as the year passes. So, the relation is not proportional as the relation is not like y = kx. (Answer)

You might be interested in
Timothy want to estimate the percentage of homeowners that own at least one dog. He surveys 100 randomly selected homeowners to
7nadin3 [17]

Answer:

C. The percentage of all homeowners that own at least one dog

Step-by-step explanation:

A parameter describes an entire population. Timothy is sampling from the 100 random homeowners to extrapolate their opinions onto the opinions of the entire population of homeowners.

8 0
2 years ago
David had a bunch of grapes for his snack . If he at 0.1 of a pound every hour , how many pounds did he eat in a 4.4 hours ?
olga_2 [115]
0.44 lbs. 
Is likely your answer
8 0
2 years ago
Read 2 more answers
the height of the snow was 84 inches in the beginning of the week. it melts at a rate of 0.15 inches per hour. how many hours wo
lakkis [162]

Answer:

It takes 147 hours for the snow to reach 62 inches.

Step-by-step explanation:

Given:

Height of the snow at the beginning  = 84 inches

Rate at which the snow melts = f 0.15 inches per hour

To Find:

The time taken for the  snow to reach 62 inches = ?

Solution:

Let the time taken to reach 62 inches be x

Then according to the question,

Total height of the snow - (rate of melting)(x) = 62 inches

On substituting the values,

84 - (0.15)(x) = 62

84 - 0.15x = 62

- 0.15x = 62 - 84

- 0.15x = -22

0.15x = 22

x = \frac{22}{0.15}

x= 146.6

x = 147

7 0
3 years ago
Which symbol correctly compares these fractions? 13 20 ___ 7 10
fomenos
These are fractions? Like 13/20 and 7/10? Is so the symbol would be 13/20 < 7/10 because 7/10 is a higher fraction than 13/20
7 0
3 years ago
Read 2 more answers
Zoe takes out a $5,155 loan at a rate of
Irina-Kira [14]

Answer:

5,888.67

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Please help is it greater than or less than<br>7*3_9*2​
    8·1 answer
  • One of the parcels weighs 2500 grams.
    5·2 answers
  • Find the mean for the following group of data items. 175, 115, 145, 115, 135
    9·1 answer
  • Wendy's older brother is buying a car.He can make 24 payments of $95 or 30 payments of $80 each. Which costs less?How much less.
    11·2 answers
  • 34,258 and 47,163 <br> The value of 4 in------ is ----- times<br> The value of 4 in -------
    11·1 answer
  • Help pleasee ASAP !!
    15·1 answer
  • In a multiple choice examination of 20 questions, four marks are given for each correct answers and one mark is deducted for eac
    14·1 answer
  • &gt; Next question
    9·1 answer
  • How many students were in the sample?
    9·1 answer
  • A physical education teacher plans to divide the seventh graders at Wilson middle school into teams of equal size for a year-end
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!