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4 years ago

Solve this equation x-3=4

Mathematics

2 answers:

MAXImum [283]4 years ago

5 0

Answer:

x-3= 4

x= 4+3

Answer: x= 7

Mice21 [21]4 years ago

4 0

Answer:

x=7

Step-by-step explanation:

x-3=4

Adding 4on both sides

x-3+3=4+3

x=7

Hope it will help you :)

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Complete the square for x^2+12x-5.

Setler [38]

Answer:

$x^2+12x-5=(x+6)^2-41$

Step-by-step explanation:

The given expression is $x^2+12x-5$

Comparing to $ax^2+bx+c$ , we have $a=1,b=12,c=-5$

We add and subtract $(\frac{b}{2a})^2$

$x^2+12x+6^2-6^2-5$

This implies that:

$\boxed{x^2+6x+36}-36-5$

The expression in the rectangle is a perfect square

$(x+6)^2-41$

Therefore $x^2+12x-5=(x+6)^2-41$

3 0

3 years ago

The cost of ordering multiple items is sometimes, always or never proportional

AlladinOne [14]

Unless there is no promotion like "buy 2 get 1 free" or "buy 2 get 1 for 50%" etc. then the cost of ordering multiple items is always proportional. Let's say something costs $5. Two items will cost $10, three $15, four $20 etc. These numbers are all proportional. Hopefully that's what you meant :)

8 0

3 years ago

The probability that an event will occur is 3 over 4. Which of the following best describes the likelihood of the event occurrin

NeX [460]

There is a 75 percent chance the event will occur

6 0

3 years ago

Write the period that has the number 913

Gala2k [10]

The answer is in the thousands group. Its the way they word the problem that complicates it. 913,256 256 being the ones group 913 being the thousands group. So the name of the period with 913, is the thousands group

4 0

4 years ago

Read 2 more answers

Emily participates in a trivia quiz show. In each round, 20 points are awarded for a correct answer and 10 points are deducted f

kirza4 [7]

Answer:

1. Emily scored 60 points in the first round

2. Emily scored minus 30 points in the second round

3. Emily's final score is 15 points.

Step-by-step explanation:

1. Let's review all the information given to us to answer the questions correctly:

Points awarded for a correct answer = 20

Points deducted for a incorrect answer = 10

2. Let's calculate the score of Emily in the first round:

Score = 7 * 20 - 8 * 10

Score = 140 - 80

Score = 60

Emily scored 60 points in the first round

3. Let's calculate the score of Emily in the second round:

Score = 4 * 20 - 11 * 10

Score = 80 - 110

Score = - 30

Emily scored minus 30 points in the second round

4. Let's calculate the final score of Emily:

Final score = (Score 1st round + Score 2nd round)/2

Final score = (60 + - 30)/2

Final score = (60 - 30)/2 = 30/2 = 15

Emily's final score is 15 points.

4 0

3 years ago