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]
3 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:
vekshin13 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
But I’m trying to write a equation out of the problem
melamori03 [73]

Step-by-step explanation:

Just use a calculator it helps, when I use the calculator it helps me alot

5 0
3 years ago
I need help please!!! My teacher doesn't teacher and she has asked us to do a problem I don't know how to do it. Can somebody ex
ra1l [238]

Using exponential functions, it is found that:

a) Since the <u>amount of caffeine will be less than 50 mg</u>, the patient will be ready for the blood test by 6 a.m.

b) The patient could have ingest 231 milligrams of caffeine.

A decaying <em>exponential function</em> is modeled by:

A(t) = A(0)(1 - r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

In this problem:

  • Caffeine metabolize at a rate of 13% per hour, hence r = 0.13.

Then:

A(t) = A(0)(1 - r)^t

A(t) = A(0)(1 - 0.13)^t

A(t) = A(0)(0.87)^t

Item a:

The coffee cup contains 150 milligrams of caffeine, hence A(0) = 150.

At 6 a.m., it is 8 hours after drinking the coffee, hence we have to find A(8).

A(t) = A(0)(0.87)^t

A(8) = 150(0.87)^8

A(8) = 49.2

Since the <u>amount of caffeine will be less than 50 mg</u>, the patient will be ready for the blood test by 6 a.m.

Item b:

This A(0), considering <u>A(11) = 50</u>, hence:

50 = A(0)(0.87)^{11}

A(0) = \frac{50}{(0.87)^{11}}

A(0) = 231

The patient could have ingest 231 milligrams of caffeine.

A similar problem is given at brainly.com/question/25537936

3 0
2 years ago
The quantity, y, varies directly as x. When y=10 x=6
neonofarm [45]

Answer:

y = \frac{5}{3} x

Step-by-step explanation:

given y varies directly as x, the the equation relating them is

y = kx ← k is the constant of variation

to find k use the given condition y = 10 when x = 6, hence

k = \frac{y}{x} = \frac{10}{6} = \frac{5}{3}

y = \frac{5}{3} x ← is the equation


8 0
4 years ago
The manufacturer of a smart watch claims that individuals who pay attention to how many steps they take per day will inadvertent
drek231 [11]

Answer:

Hello your question is incomplete attached below is the complete question

answer :  1596 ± 2.861 \sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } } ------  ( A )

Step-by-step explanation:

I will use excel function to resolve this question

<u>Determine the 99% confidence of interval for the difference in mean  number of steps by all people</u>

∝ = 0.01

critical value ( t ) = 2.861  ( = TINV ( 0.01, 19 )

Given that :

S1 = 1580

S2 = 2350

n1 = 20

n2 = 20

Difference in mean = x1 - x2 = 1596

Margin of Error = t * \sqrt{\frac{S^2_{1} }{n_{1} } +\frac{s^2_{2} }{n_{2} } }

∴  99% confidence of interval

= 1596 ± 2.861 \sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } } ------

8 0
3 years ago
The original price of an iPad is $429. The sale price is 30% off the original price. What is the sale price of the iPad? Show yo
jasenka [17]

Answer:

297.3

Step-by-step explanation:

30% of 429 is 128.7

429 which is the original price - 128.7 which is the price off = 297.3

6 0
3 years ago
Other questions:
  • If a car travels 23 miles on 1.0 gal of gas, how many liters of gasoline are needed for a 135 mile trip?
    11·1 answer
  • The library is 0.96 miles away   from  theo'"s home Write this distance as a fraction in simplest form.
    11·2 answers
  • A data set with whole numbers has a low value of 20 and a high value of 96.
    11·1 answer
  • Question in image below
    11·1 answer
  • 2x-3(x-4y)+1/2(8x-12y)
    6·1 answer
  • Explain how to use a wheels circumference to find its diameter
    6·1 answer
  • Name the solid figure formed by the net.<br> 1<br> A Cube<br> B Cuboid<br> c Cylinder<br> D<br> Cone
    6·1 answer
  • 9 times 9what is the answer to this problem
    8·1 answer
  • 5x^2 - 6x - 28 = 0<br> please help me do this
    7·1 answer
  • Let U= {1,2,3,4,5,6,7,8,9,10}, A={2,4,6,8} B={1,2,3,4}, C={5,6,9}
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!