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3 years ago

7р — 12 = Зр what would this be

Mathematics

2 answers:

vodka [1.7K]3 years ago

8 0

Answer:

p=3

Step-by-step explanation:

7p-12=3p

7p-3p=12

4p=12

p=12÷4

p=3

trapecia [35]3 years ago

4 0

Answer:

p = 3

Step-by-step explanation:

Step 1 :

Pulling out like terms :

1.1 Pull out like factors :

4p - 12 = 4 • (p - 3)

Equation at the end of step 1 :

Step 2 :

Equations which are never true :

2.1 Solve : 4 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

2.2 Solve : p-3 = 0

Add 3 to both sides of the equation :

p = 3

One solution was found :

p = 3

Processing ends successfully

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12% is 90% of what number?

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90% = 0.9

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3 years ago

Among 9 electrical components exactly one is known not to function properly. if 4 components are randomly selected, find the pro

seraphim [82]

Answer:

0.4444

Step-by-step explanation:

Use the following property to ease the calculation:

P(At least one)=1-P(None)

Total number of electrical components: 9

Number that does not function well :1

Number that functions well : 8

We have $^8C_4=70$ ways to to choose 4 good components from 8.

We have $^9C_4=126$ ways to choose 4 components from a total of 9.

If all function properly then none is bad, we $^1C_0=1$ way to do this.

P(At least one)= $1-\frac{^8C_4*^1C_0}{^9C_4}$

P(At least one)= $1-\frac{70*1}{126}$

P(At least one)=0.4444

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3 years ago

Read 2 more answers

How much material is required to make a pipe that is 300 cm long whose outer diameter is 8 cm with an inner diameter of 5 cm? Sh

worty [1.4K]

Answer:

Step-by-step explanation:

If you had a solid cylinder, in order to find the amount of material that makes up that solid cylinder, you would find the volume using the radius of 4 (half of the diameter 8). BUT we want to know the volume of the solid with the radius of 4 minus the solid that has a radius of 2.5 (half of the diameter 5).

$V_o-V_i$ That's volume outer - volume inner. To find the outer volume: