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konstantin123 [22]
2 years ago
10

Question 21, help me please

Mathematics
2 answers:
Ede4ka [16]2 years ago
6 0
The answer is 13.92 bc you have to take 16% of 12 which comes from 4.50 + 4.50 + 1.50 + 1.50. And that gives you 12. So 12 + 1.92 = 13.92.
ANSWER: $13.92
anastassius [24]2 years ago
3 0
The total meal including the tip cost for both girls together is $13.92
Explanation:
4.50 times 2 = 9
1.50 times 2 = 3
9 plus 3 = 12
16% of 12 = 1.92
12 plus 1.92 = 13.92
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MATH HELP PLEASE 50 POINTS:
Delicious77 [7]

Answer:

f(x)=-a(x+2)(2x-1)(x-3) where a>0.

To graph the the polynomial, begin in the left top of quadrant 2. Then draw downwards to the first real zero on the x-axis at -2. Cross the x-axis and then curve back up to 1/2 on the x-axis. Cross through again and curve back down to cross for the last time at 3 on the x-axis. The graph then ends going down towards the right in quadrant 4. It forms an s shape.

Step-by-step explanation:

The real zeros are the result of setting each factor of the polynomial to zero. By reversing this process, we find:

  • zero -2 is factor (x+2)
  • zero 1/2 is factor (2x-1)
  • zero 3 is factor (x-3)

We write them together with an unknown leading coefficient a which is negative so -a.

f(x)=-a(x+2)(2x-1)(x-3) where a>0

The leading coefficient of a polynomial determines the direction of the graph's end behavior.

  • A positive leading coefficient has the end behavior point up when an even degree and point opposite directions when an odd degree with the left down and the right up.
  • A negative leading coefficient has the end behavior point down when an even degree and point opposite directions when an odd degree with the left up and the right down.
  • This graph has all odd multiplicity. The graph will cross through the x-axis each time at its real zeros.

To graph the the polynomial, begin in the left top of quadrant 2. Then draw downwards to the first real zero on the x-axis at -2. Cross the x-axis and then curve back up to 1/2 on the x-axis. Cross through again and curve back down to cross for the last time at 3 on the x-axis. The graph then ends going down towards the right in quadrant 4. It forms an s shape.

4 0
3 years ago
What is the solution of the simultaneous equations 3x 2y 14 and 4x 3y 13?.
lara31 [8.8K]

The solution of simultaneous equations is x=4 and y = -1.

<h3>What are Simultaneous equations?</h3>

Simultaneous equations are two or more algebraic equations with the same unknown variables and the same value of the variables satisfies all such equations.

We can solve simultaneous equations by various methods. here we will solve it by elimination method.

Here we have two simultaneous equations

      3x -2y = 14 --- (i)

and 4x + 3y = 13---(ii)

Now multiplying (i) by 3 and (ii) by 2 we get

 9x -6y = 42 and 8x + 6y = 26.

Now adding both we get

17x = 68 ⇒ x = 68/17 ⇒ x = 4.

Substituting the value of x in (i), we get

3*4 - 2y = 14 ⇒ -2y = 14-12 = 2 = -2/2 ⇒ y = -1.

Therefore, the values of x and y are 4 and -1 respectively .

To know more about simultaneous equations, visit

brainly.com/question/16863577

#SPJ4

<u>NOTE</u> : The question given here is not complete. The complete question is given below.

Question: What is the solution of the simultaneous equations 3x- 2y= 14 and 4x+ 3y= 13?.

6 0
9 months ago
What is the solution to the equation?<br> --23 = x – 18<br> х<br> Enter your answer in the box.
DochEvi [55]

Answer:

x=-5

Step-by-step explanation:

move the x to the other side. Then move the - 23. you get -x=5

you divide by -1 and you get x=-5

4 0
2 years ago
Read 2 more answers
Algebra question. Question number 14
Dafna11 [192]

Answer:

i think its b

Step-by-step explanation:

i hope that helps

6 0
3 years ago
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Given three side lengths, how many triangles can be formed?
guajiro [1.7K]
The answer would be 3 or 4 triangles.
8 0
3 years ago
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