answer.
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
8090 [49]
2 years ago
5

Leah has 28 more marbles than Dan. 1 3 of Leah’s marbles is equal to 4 5 of Dan’s marbles. Find the number of marbles that Leah

has.
Mathematics
1 answer:
Kitty [74]2 years ago
4 0

Answer: There are 48 marbles that Leah has.

Step-by-step explanation:

Since we have given that

Difference between the number of marbles Leah has than Dan has = 28

According to question,

\dfrac{1}{3} of Leah's marble = \dfrac{4}{5} of Dan's marble

\dfrac{1}{3}L=\dfrac{4}{5}D\\\\L=\dfrac{12}{5}D\\\\\dfrac{L}{D}=\dfrac{12}{5}

So, using the ratio, we have

Number of marbles Leah has = 12x

Number of marbles Dan has = 5x

So, our equation becomes,

12x-5x=28\\\\7x=28\\\\x=\dfrac{28}{7}\\\\x=4

So, Number of marbles Leah has 12x=12\times4=48

Hence, there are 48 marbles that Leah has.

You might be interested in
In the data set below what is the mean absolute deviation 41,56,38,45,55,51,52
saveliy_v [14]
All of these numbers are making me crazy
8 0
1 year ago
Se distribuyen 400 bolsas en tres urnas sabiendo que la primera tiene 80 menos que la segunda y esta tiene 60 menos que la terce
laiz [17]

Answer:

Primeras urnas = 60 bolsas

Segundas urnas = 140 bolsas

Terceras urnas = 200 bolsas

Step-by-step explanation:

Deje que las urnas se representen de la siguiente manera

Primeras urnas = a

Segundas urnas = b

Terceras urnas = c

Se nos dice en la pregunta

400 bolsas se distribuyen en tres urnas

Por lo tanto,

a + b + c = 400 bolsas ......... Ecuación 1

Por la pregunta sabemos que

1) El primero tiene 80 menos que el segundo

a = b - 80

2) Y este segundo tiene 60 menos que el tercero

b = c - 60

Por tanto, c = b + 60

Por lo tanto, sustituimos b - 80 por ayb + 60 por c en la Ecuación 1

a + b + c = 400 bolsas ......... Ecuación 1

b - 80 + b + b + 60 = 400 bolsas

Recopilar términos similares

b + b + b - 80 + 60 = 400 bolsas

3b = 400 + 80 - 60

3b = 420

b = 420/3

b = 140 bolsas

Por lo tanto, el número de bolsas en la segunda urna = 140 bolsas

Dado que a = b - 80

a = 140 bolsas - 80

a = 60 bolsas

Por lo tanto, el número de bolsas en la primera urna = 60 bolsas

Dado que c = b + 60

b = 140 bolsas

c = 140 + 60

c = 200 bolsas.

El número de bolsas en las terceras urnas = 200 bolsas.

4 0
2 years ago
If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to (s circle t) (negative 7)?
Lisa [10]

Answer:

-439

Step-by-step explanation:

(s circle t) (negative 7) is a notation for a compound function.

A compound function is a function that has as an argument another function.

Another notation for this compound function is s(t(-7)), that is, the result of the function t(-7) is the value that will be used in the function s(x).

So, first we calculate the value of t(-7):

t(x) = 3x

t(-7) = 3*(-7) = -21

Now, we apply this value for s(x):

s(x) = 2 - x2

s(t(-7)) = s(-21) = 2 - (-21)^2 = 2 - 441 = -439

5 0
2 years ago
Read 2 more answers
Match the expression with its name. 10x2 – 5x + 10
puteri [66]

Answer:

Step-by-step explanation:

quadratic trinomial :  YES.  Three terms, 2nd order polynomial.

cubic monomial:  NO; this is neither a cubic nor a monomial (1 term).

not a polynomial :  NOT true; this is definitely a polynomial.

fourth-degree binomial:   NO; it's a second-degree trinomial.

5 0
2 years ago
a national park charges $26 per adult and $16 per child for rafting down one of their two rivers. Write an algebraic expression
blondinia [14]
26a+16c would be the answer 
5 0
2 years ago
Other questions:
  • Mrs. Williams is knitting a blanket for her newborn granddaughter. The blanket is 2.25 meters long and 1.8 meters wide. What is
    12·1 answer
  • A soft drink has a diameter of 6 cm and a height of 11.5 cm. What is the surface area?
    7·1 answer
  • Which function increases at a faster rate on 0 to infinity, f(x) = x2 or g(x) = 2x? Explain your reasoning.
    17·2 answers
  • James has t toy cars and Paul has 13 more. How many cars will James have if Paul gives him half of his cars?
    12·1 answer
  • True or False? A circle could be circumscribed about the quadrilateral below.
    11·2 answers
  • In a given course a student receives preliminary examination grades of 81, 85, and 95. The final examination is weighed for one-
    7·1 answer
  • An auto insurance company insures drivers of all ages. An actuary compiled the following statistics on the company’s insured dri
    13·1 answer
  • Syd chooses two different primes, both of which are greater than $10,$ and multiplies them. The resulting product is less than $
    11·1 answer
  • F(x) = -4x(2)+ 12x – 9
    6·2 answers
  • The Empire State Building weighs about 7.3×108pounds. The One World Trade Center building weighs about 88,200,000 pounds. What i
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!