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3 years ago

Solve this multi step equation: 7j + 20 = 3j + 40

Mathematics

2 answers:

Dmitriy789 [7]3 years ago

5 0

Answer:

j=5

Step-by-step explanation:

7j+20=3j+40

Step 1: Subtract 3j from both sides.

7j+20−3j=3j+40−3j

4j+20=40

Step 2: Subtract 20 from both sides.

4j+20−20=40−20

4j=20

Step 3: Divide both sides by 4.

4j/4

20/4

j=5

Answer:

j=5

poizon [28]3 years ago

3 0

Answer: j = 5

Solve this multi step equation: 7j + 20 = 3j + 40

First step: bring the numbers that don't have a variable on the other side of the equal sign.

7j - 3j = - 20 + 40

*TIP: REMEMBER: when you have a positive number, and you bring it on the other side of the equal sign, it becomes negative; same thing with a negative number. When you have a negative number, and you bring it on the other side of the equal sign, it becomes positive.*

Second step: Solve the equations on both sides.

4j = 20

Final step: (this step is easy) divide 20 by 4

20/4 = 5;

Therefore, j = 5.

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Classify the decimal forms of 3/12 and and 2/9 as repeating or as repeating or terminating.

andre [41]

Answer:

3/12: terminating; 2/9: repeating

Step-by-step explanation:

3/12=0.25 terminating as it has a finite number of digits after the decimal point.

2/9=0.222.... repeating decimal as its number is repeated indefinitely.

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3 years ago

How do I solve : COT pi/4 ...?

Wewaii [24]

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4 years ago

Calcula la longitud en YARDAS de

tatiyna

Answer:

Las longitudes solicitadas en yardas son:

Trayecto A = 109.361 yardas.
Trayecto B = 20.231785 yardas.

Step-by-step explanation:

Para hacer la conversión de unidades que requieres en el ejercicio, debes saber que:

1 metro = 1.09361 yardas

Con ese factor de conversión tú puedes hacer reglas de tres para calcular las medidas que requieres. En el caso del trayecto A:

Si:

1 metro = 1.09361 yardas
100 metros = X

Entonces:

$x=\frac{100m *1.09361yardas}{1m}$

Cancelamos metros y obtenemos:

x = 100 * 1.09361 yardas
x = 109.361 yardas

En este caso, el trayecto A en yardas corresponde a 109.361 yardas. El mismo procedimiento puede aplicarse para el trayecto B:

Si:

1 metro = 1.09361 yardas
18.50 metros = X

Entonces:

$x = \frac{18.50m*1.09361yardas}{1m}$

Cuando se cancelan los metros se obtiene:

x = 18.50 * 1.09361 yardas
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makkiz [27]

Answer:

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Step-by-step explanation:

a. 2.5 mm = 0.25 cm

2 (1 + 0.25) = 2.5

2 (3.5 + 3) = 13

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