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ladessa [460]
2 years ago
14

2x+10=28 What is the solution to this equation

Mathematics
2 answers:
grandymaker [24]2 years ago
6 0

Answer:

Step-by-step explanation:

2x + 10 = 28

Bringing like terms on one side

2x = 28 - 10

2x = 18

x = 18/2 = 9

BigorU [14]2 years ago
3 0

Answer:

x=9

Step-by-step explanation:

step 1. restate the equation

2x+10=28

step 2. subtract 10 from both sides of the equations

2x+10-10=28-10

2x=18

step 3. get x alone by dividing 2 from both sides

2x/2=18/2

step 4. the answer

x=9

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lubasha [3.4K]
31-27+12-23-(-25)+(-6)= 12
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3 years ago
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There are 15 candidates for 4 job positions.
Veronika [31]

Answer:

32760 ways

Step-by-step explanation:

Given

Number of Candidates = 15

Job Positions = 4

Required:

Number of outcomes

This question represent selection; i.e. selecting candidates for job positions;

This question can be solved in any of the following two ways

Method 1.

The first candidate can be chosen from any of the 15 candidates

The second candidate can be chosen from any of the remaining 14 candidates

The third candidate can be chosen from any of the remaining 13 candidates

The fourth candidate can be chosen from any of the remaining 12 candidates

Total Possible Selection = 15 * 14 * 13 * 12

<em>Total Possible Selection = 32760 ways</em>

<em></em>

Method 2:

This can be solved using permutation method which goes thus;

nPr = \frac{n!}{(n-r)!}

Where n = 15 and r = 4

So;

nPr = \frac{n!}{(n-r)!} becomes

15P4 = \frac{15!}{(15-4)!}

15P4 = \frac{15!}{11!}

15P4 = \frac{15*14*13*12*11!}{11!}

15P4 = 15*14*13*12

15C4 = 32760

<em>Hence, there are 32760 ways</em>

8 0
3 years ago
Two-fifths of a number is decreased by three. Find the value of the expression if the number is twenty-five.
Sindrei [870]
Let's take the number as x.

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7 
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8/4=$2

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Hope this helps!
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2 years ago
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5\2,3 and 3\2,8 find the distance​
pochemuha

Answer:

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Step-by-step explanation:

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√(3/2 - 5/2)² + (8 - 3)²

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√1 + 25

√26

4 0
3 years ago
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