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Nataly [62]
3 years ago
6

Write x^2-4x+7 in the form (x+a)^2+b where a and b are constants.

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
8 0

Answer:

wiat

Step-by-step explanation:

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you take a group of 20 people going to the movies. kids’ tickets cost $4 each, and adults tickets $6 each. your total cost is $9
brilliants [131]

The number of kids in your group is 12.

Step-by-step explanation:

Given,

Number of people = 20

Cost of each kid ticket = $4

Cost of each adult ticket = $6

Total spent = $96

Let,

x be the number of kids ticket

y be the number of adult ticket

According to given statement;

x+y=20     Eqn 1

4x+6y=96    Eqn 2

Multiplying Eqn 1 by 4

4(x+y=20)\\4x+4y=80\ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 2

(4x+6y)-(4x+4y)=96-80\\4x+6y-4x-4y=16\\2y=16

Dividing both sides by 2

\frac{2y}{2}=\frac{16}{2}\\y=8

Putting y=8 in Eqn 1

x+8=20\\x=20-8\\x=12

The number of kids in your group is 12.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/8907574
  • brainly.com/question/8790374

#LearnwithBrainly

5 0
3 years ago
What is negative 13/7 minus negative 5/7 as a fraction
Nimfa-mama [501]

Answer:

-8/7

Step-by-step explanation:

13-7. 8

--------- = --

7

7

4 0
3 years ago
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In 2007, approximately 3,380,000 people visited the Statue of Liberty. Express this
sweet [91]

Step-by-step explanation:

3.38 × 10^{6} is the scientific notation of 3,380,000

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3 years ago
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What is <br> Multiple of 10
Vadim26 [7]
10,20,30,40,50,60,70,80,90,100….etc
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Write 56/90 as a decimal.
gizmo_the_mogwai [7]
56/90

" / " means divide

56 divided by 90 = 0.62 with a line over the 2 because it is repeating
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3 years ago
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