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
KonstantinChe [14]
2 years ago
6

Rachel saved money to buy art supplies. She used 13 of her savings to buy brushes. She used 35 of her savings to buy paint. What

fraction of her savings does she have remaining?
Mathematics
1 answer:
vekshin12 years ago
6 0

Given:

Rachel used \dfrac{1}{3} of her savings to buy brushes.

She used \dfrac{3}{5} of her savings to buy paint.

To find:

The fraction for remaining savings.

Solution:

Fraction that Rachel used of her savings to buy brushes and paint is

\text{Fraction for used amount}=\dfrac{1}{3}+\dfrac{3}{5}

                                    =\dfrac{5+9}{15}

                                    =\dfrac{14}{15}

Now,

\text{Fraction for remaining savings}=1-\text{Fraction for used amount}

\text{Fraction for remaining savings}=1-\dfrac{14}{15}

\text{Fraction for remaining savings}=\dfrac{1}{15}

Therefore, \dfrac{1}{15} of her savings is remaining.

You might be interested in
A simple random sample of size n=250 individuals who are currently employed is asked if they work at home at least once per week
Levart [38]

Answer:

99% confidence interval for the population proportion of employed individuals is [0.104 , 0.224].

Step-by-step explanation:

We are given that a simple random sample of size n=250 individuals who are currently employed is asked if they work at home at least once per week.

Of the 250 employed individuals​ surveyed, 41 responded that they did work at home at least once per week.

Firstly, the pivotal quantity for 99% confidence interval for the population proportion is given by;

                              P.Q. = \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion of individuals who work at home at least once per week = \frac{41}{250} = 0.164

           n = sample of individuals surveyed = 250

<em>Here for constructing 99% confidence interval we have used One-sample z proportion statistics.</em>

So, 99% confidence interval for the population proportion, p is ;

P(-2.5758 < N(0,1) < 2.5758) = 0.99  {As the critical value of z at 0.5%

                                             level of significance are -2.5758 & 2.5758}  

P(-2.5758 < \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } } < 2.5758) = 0.99

P( -2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } < {\hat p-p} < 2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } ) = 0.99

P( \hat p-2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } < p < \hat p+2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } ) = 0.99

<em>99% confidence interval for p</em> = [\hat p-2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } , \hat p+2.5758 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }]

= [ 0.164-2.5758 \times {\sqrt{\frac{0.164(1-0.164)}{250} } } , 0.164+2.5758 \times {\sqrt{\frac{0.164(1-0.164)}{250} } } ]

 = [0.104 , 0.224]

Therefore, 99% confidence interval for the population proportion of employed individuals who work at home at least once per week is [0.104 , 0.224].

7 0
2 years ago
A salesperson is driving from the office to a client, a distance of about 250 kilometers. After 45 minutes, the salesperson pass
ludmilkaskok [199]
<span> <span>Speed is calculated as distance covered, divided by the time taken to cover that distance. In this case, the sales person covered 50KM in 45minutes (which can also be expressed as 3/4 hours). To calculate the speed he used to cover this distance, we divide the distance covered by the time taken. So 50km/3/4hours. This gives us 66.67km/hr. In order to calculate the amount of time the salesperson used to travel from the office to the sales person, we calculate as follows 250km/66.67km/hr. This gives us a total of 3.75 hours or 3 hours 45 minutes.</span></span>
7 0
3 years ago
I understand this.....
Andru [333]
24*22=528 square feet
3 0
3 years ago
Read 2 more answers
Compute the total cost per year of the following pair of expenses. Then complete the​ sentence: On an annual​ basis, the first s
Mandarinka [93]

Answer:

So 912$ is 58% of 1584 $

Step-by-step explanation:

6 0
3 years ago
There are 90 students in the school band. 40% of them are sixth graders. How many band members are sixth graders?
Phoenix [80]

Answer:

36

Step-by-step explanation:

.4 x 90

7 0
3 years ago
Read 2 more answers
Other questions:
  • Distributive property2x - 4(+4) = 10(+4) i need a verification, i think the answer is 34.
    13·1 answer
  • Sam cut a pie into equal slices period there are only three slices left period the angle measures for the slice is 72° period ho
    5·1 answer
  • Help please, which one is a quadratic expression?
    12·1 answer
  • 12. Find the area of the parallelogram.<br> 2.8 in<br> 7.5 in
    12·2 answers
  • Which is greater - 0.5 or 9/18?
    11·1 answer
  • Write the quadratic equation in factored form: x^2 + x - 20
    9·1 answer
  • A train is 1000 metres long. It is travelling at a constant speed, and approaches a
    13·1 answer
  • A class room of 10m long and 5 m wide has two windows of size 15 mx 1 m and a door of 1.5 m ×2 m. The cost of making the 4 walls
    14·1 answer
  • In KLM, m = 17 inches, l = 44 inches and
    9·1 answer
  • What is the value of f(g(3))?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!