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
Leno4ka [110]
3 years ago
10

A book store is having a 30% off sale. Diary of a Wimpy Kid books are now $6.30 each. What was the original price of the books?

Mathematics
1 answer:
sveta [45]3 years ago
6 0

Answer:21

Step-by-step explanation:

You might be interested in
(Ill give brainliest)
Anna007 [38]

Answer:

522

Step-by-step explanation:

3 0
2 years ago
18 = -4x -9 + 3 resolver
wolverine [178]

Answer:

The answer is X=-4 hope this helps.

3 0
3 years ago
Read 2 more answers
Problema de capacidades Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. ¿Cuánt
mariarad [96]

Answer:

Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.

Step-by-step explanation:

Un sistema de ecuaciones lineales es un conjunto de dos o más ecuaciones de primer grado, en el cual se relacionan dos o más incógnitas.

Resolver un sistema de ecuaciones consiste en encontrar el valor de cada incógnita para que se cumplan todas las ecuaciones del sistema.

En este caso, las variables a calcular son:

  • x= cantidad de botellas de 2 litros.
  • y= cantidad de botellas de 5 litros.

Una empresa aceitera ha envasado 3000 litros de aceite en 1200 botellas de dos y de cinco litros. Entonces es posible plantear el siguiente sistema de ecuaciones:

\left \{ {{2*x+5*y=3000} \atop {x+y=1200}} \right.

Existen varios métodos para resolver un sistema de ecuaciones. Resolviendo por el método de sustitución, que consiste en despejar o aislar una de las incógnitas y sustituir su expresión en la otra ecuación, despejas x de la segunda ecuación:

x= 1200 - y

Sustituyendo la expresión en la primer ecuación:

2*(1200 - y) + 5*y=3000

Resolviendo se obtiene:

2*1200 - 2*y + 5*y= 3000

2400 +3*y= 3000

3*y= 3000 - 2400

3*y= 600

y= 600÷3

y= 200

Reemplazando en la expresión x= 1200 - y:

x= 1200 - y

x=1200 -200

x= 1000

<u><em>Hay 200 botellas de 5 litros y 1000 botellas de 2 litros.</em></u>

7 0
3 years ago
Two people spend $44 at a fair. There is an entrance fee of x dollars per person and each ride costs $3.50. If they went on the
almond37 [142]
I think its B 
that's THINK i'm not completely sure 

7 0
3 years ago
4. What is 54 + (-78) - (-39)
inysia [295]

Answer:

Step-by-step explanation:

follow the Pemdas order of operations

add and subtract (left to right)

apply the rule +(-a)=-a

+(-78)=-78

=54-78-(-39)

54-78=-24

=-24-(-39)

apply the rule -(-a)=+a

-(-39) =+39

=-24 +39

-24+39=15

=15

5 0
1 year ago
Other questions:
  • Solve each problem. Be sure to include the correct sign in your answer. a. 8 × 3 = ? b. –7 × 5 = ? c. –6 × (–9) = ? d. 8 ÷ (–2)
    11·2 answers
  • Have y'all ever experienced Deja Vu before?
    15·2 answers
  • During the first 3 months of opening a cupcake shop, Kanya had 3,000 customers. After 10 months from opening, she had 800 custom
    8·1 answer
  • Divide 9x^2-6x+2 by (-1+3x)
    14·1 answer
  • 2. In his trick or treat bag, Jackson has forty candy bars, fifteen pieces of gum and ten lollipops. find the
    13·1 answer
  • Roses produced asexually from cuttings are genetically identical to the parent. Roses grown from sexually produced seeds may loo
    11·2 answers
  • how do we set this up in a proportion 15% of $129.00 and let me know what the answer is will give brainlist
    8·2 answers
  • Clyde rents a tuxedo for several days. Let d represent the number of additional days Clyde uses the tuxedo. Write an algebraic e
    13·1 answer
  • Please help out and tell answer and explain after maybe? please and thanks.
    13·1 answer
  • Help me please i need to do 3 months of hw in 2 hours help me please
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!