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denpristay [2]
3 years ago
8

Please help i need the answer asap!!!

Mathematics
2 answers:
IrinaVladis [17]3 years ago
7 0
Choice b because it it now where’s my brainliest
MA_775_DIABLO [31]3 years ago
5 0

Answer:

  • Choice b.

Step-by-step explanation:

Replace (x, y) with (1, 1) and verify if the equations are correct.

You would ignore the x and y in the equations. Testing one of each pair.

  • a. 3 + 2 = 3, incorrect
  • b. 7 + 2 = 9, correct
  • c. 8 + 1 = 7, incorrect
  • d. 8 - 2 = 4, incorrect

It is obvious that only b. is correct.

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Mrs. CADY CONSTRUCTS A CUBE WITH 512 MAGNETIC BLOCKS. STUDENTS IN HER TWO CLASSES WILL EACH MAKE AN IDENTICAL CUBE. THERE ARE 28
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YOU DON"T HAVE TO YELL

512 PER STUDENT

BASICALLY,
CUBES NEEDED=CUBES PER STUDENT TIMES NUMBER OF STUDENTS

NUMBER OF STUDENTS=28+25=53

CUBES PER STUDENT=512

CUBES NEEDED=512 TIMES 53 EQUALS 27136 CUBES


SHE NEEDS 27136 CUBES FOR ALL HER STUDENTS
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3 years ago
Ana compró una cartera cuyo precio original es de x dólares con el 10% de descuento y un perfume con precio original de B dólare
katovenus [111]

Answer:

Tarea:

Ana compró una cartera cuyo precio es x dólares con el 10% de descuento y un perfume con precio original en dólares con un descuento del 15%. ¿Cuánto gastó Ana en total?

- Solución:

El precio estará en lenguaje algebraico, ya que no nos dan el dato de cuánto costó cada artículo.

• Hallamos el precio de la cartera con el descuento:

El precio original es x, entonces:

Regla de tres:

100 % --------> x

10 % -----------> ?

10 . x : 100 = ?

10x/100 = ?

El 10% del precio de la cartera es 10x/100.

Entonces el precio de la cartera es (x-10x/100).

• Hallamos el precio del perfume con el descuento:

El precio original es y, entonces:

Regla de tres:

100% -------> y

15 % --------> ?

15.y/100

El 15% del perfume es 15y/100.

Entonces el precio del perfume con el descuento es (y-15y/100).

Entonces lo que gastó en total es:

(x - 10x/100) + (y - 15y/100)

Step-by-step explanation:

pls give me brainless

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3 years ago
You have a litre bottle of water and drink 375 millilitres.<br><br> How much is left?
enot [183]

Answer:

625 millilitres

Step-by-step explanation:

1 litre = 1000 millilitres

Left -> 1000 millilitres - 375 millilitres = 625 millilitres

5 0
3 years ago
Sally was getting ready to go on a hiking trip with friends across part of the Appalachian Trail. They were trying to determine
dem82 [27]

Answer:

They'll walk 140.28 miles in 42 hours at that pace.

Step-by-step explanation:

In order to find the distance they can travel at a steady pace, we need to take the pace in wich they intend to travel and multiply it by the time that they intend to travel. In this case their pace is 5 miles every 1.5 hours it means that their pace is 5/1.5 = 3.34 m/h, if they travel for 42 hours they'll travel a distance of:

distance = 3.34*42 = 140.28 miles

5 0
4 years ago
Could someone please help answer this, please no spam, will give brainliest, thank you!
Jobisdone [24]

Answer:

x>-5

Step-by-step explanation:

\frac{-1}{5} x+1

Subtract 1 from both sides

\frac{-1}{5} x+1-1

Simplify

\frac{-1}{5} x

Multiply both sides by -1, which reverses the inequality also

\frac{-1}{5} x(-1)>1(-1)

Simplify

\frac{1}{5} x>-1

Multiply both sides by 5

5*\frac{1}{5} x>5(-1)

Simplify

x>-5

4 0
3 years ago
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