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2 years ago

Solve the system of equations using substitution. y=x+2,5x-4y=-3

Mathematics

1 answer:

NARA [144]2 years ago

8 0

Answer:

x=5 and y=7

Step-by-step explanation:

Just substitute in y=x+2 into the equation 5x-4y=-3 to get 5x-4(x+2)=-3 which simplifies to x=5. Substitute x into y=x+2 to find y=7

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M more than nineteen

Gnesinka [82]

M is the variable: M
More than is addition: +
Nineteen is the number: 19
The equation is: m+19

6 0

3 years ago

Tenemos 2000 baldosascon las que nos proponrmos embaldosar dos habitaciones.Para la 1ª gastamos 3/5 de ellas,y con la 2ª,3/4de l

Setler79 [48]

Answer:

En la primera habitación son usadas 1200 baldosas.

En la segunda habitación son usadas 600 baldosas.

Sobraron 200 baldosas.

Step-by-step explanation:

Tienes 2000 baldosas, con las que se propone embaldosar dos habitaciones.

Para la primera habitación se han gastado $\frac{3}{5}$ de las baldosas. Esto se expresa como:

$\frac{3}{5}*2000$

Para multiplicar una fracción por un número entero, el número entero n se puede escribir como la fracción $\frac{n}{1}$ . Luego se multiplica los numeradores y denominadores. En este caso:

$\frac{3}{5}*2000=\frac{3}{5}*\frac{2000}{1} =\frac{3*2000}{5*1} = \frac{6000}{5}$

Para reducir la fraccion, divide 40 entre 10

$\frac{6000}{5} =$ 6000 ÷5= 1200

Entonces en la primera habitación son usadas 1200 baldosas. Por lo que las que quedan se calcula como:

2000 - 1200= 800 baldosas

De esta cantidad de baldosas que quedaron, $\frac{3}{4}$ son usadas para embaldosar la segunda habitación. Esto se expresa como:

$\frac{3}{4}*800$

Resolviendo de igual manera que en el caso de la primer habitación se obtiene:

$\frac{3}{4}*800=\frac{3}{4}*\frac{800}{1} =\frac{3*800}{4*1} =\frac{2400}{4}$ = 2400 ÷ 4= 600

Entonces en la segunda habitación son usadas 600 baldosas. Por lo que, teniendo en cuenta que se tenían 800 baldosas que quedaron de la primera habitación, las baldosas restantes se calculan como:

800 - 600= 200 baldosas

Sobraron 200 baldosas.

6 0

3 years ago

Combine the like terms to create an equivalent expression. \large{7k-k+19}7k−k+19

klio [65]

A is correct trust promise

3 0

3 years ago

Read 2 more answers

lan ran 24 laps in a charity run and then walked 0.2 kilometer to the presentation table the total; distance lan traveled was 29

QveST [7]

Answer:

Step-by-step explanation:

1.225km is equal to each laps

Step-by-step explanation:

Since Kristy total distance traveled = 29.6km

And Kristy ran 24 laps and later walk 0.2km. it simply implies that

Total distance traveled = distance covered running + distance covered walking

Since we know that

Total distance traveled = 29.6km

distance covered running = 24 laps

distance covered walking = 0.2km

Distance covered running in km = total distance traveled - distance covered walking

Distance covered running in km = 29.6km - 0.2km = 29.4km.

To now find the distance for each lap.

Since we have:

Distance covered running in km = 29.4km.

Distance covered running in lap = 24 laps

i.e

24 laps = 29.4km

1 lap = x

Use cross-multiple

24 laps * x = 29.4km × 1 lap

x = 29.4km / 24

x = 1.225km

Therefore

1.225km is equal to each laps.

8 0

3 years ago

Phoebe has 4 bags of cat food. She feeds her cat 1/5 of a bag

Annette [7]

Answer:

20 days

Step-by-step explanation:

5 days for each bag becuase each day is 1/5 5 days=5/5 (1 whole).

there are 4 bag so we do 5*4=20.

It would take 20 days to finsih all the bags.

PLEASE GIVE BRAINLIEST

6 0

2 years ago

Read 2 more answers