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Nuetrik [128]
2 years ago
10

I need help with this problem and if you can help me I would definitely appreciate it :)

Mathematics
1 answer:
Georgia [21]2 years ago
3 0

Answer:

a. x=2, y=13

b. x=14, y=25

c. x=−4, y=13

Step-by-step explanation:

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What is each number in scientific notaion
ruslelena [56]

For the first one it is 5 x10^{8}  

and for the second one it is 0.0005 = 5 × 0.0001 = 5 × 10−4

6 0
3 years ago
A hiker walks an average rate of 2 miles per hour. Write a multiplication equation to find how long it will take for the hiker t
kykrilka [37]
Y= X/2

-----
y= 11/2
y= 5.5 hrs
7 0
3 years ago
I dont get 4 digit by 1 digit multiplcation​
Leokris [45]

Answer:

we know

Step-by-step explanation:

3 0
3 years ago
Si 15 obreros construyen un muro en 45 minutos, ¿en cuánto tiempo lo construirán 3 obreros con similar habilidad?
Alexxx [7]

Answer:

3 obreros tardaran 225 minutos en completar el trabajo.

Step-by-step explanation:

Sea R la velocidad con la que un obrero puede construir 1 muro.

Sabemos que 15 obreros construyen un muro en 45 minutos, entonces:

(15*R)*45min = 1 muro

Con esta ecuación podemos encontrar el valor R

R = (1 muro)/(15*45min)  

Ahora queremos saber cuando tiempo tardan 3 obreros en construir un muro, entonces tenemos que resolver:

(3*R)*T = 1 muro

Reemplazando el valor de R obtenemos:

(3*(1 muro)/(15*45min))*T = 1 muro

T = (1 muro)*(15*45 min)/(3*1 muro)

T = 5*45min = 225 min

3 obreros tardaran 225 minutos en completar el trabajo.

7 0
3 years ago
Explain how you solve this: -7 = -1 + x/3
Delvig [45]

Answer:

-18 =x

Step-by-step explanation:

-7 = -1 + x/3

Add 1 to each side

-7+1 = -1+1 + x/3

-6 = x/3

Multiply each side by 3

-6*3 = x/3*3

-18 =x

5 0
3 years ago
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