1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Liula [17]
2 years ago
5

Evaluate 2x-5x+ 12 when x = -2

Mathematics
2 answers:
vodka [1.7K]2 years ago
7 0

Answer:

2(-2)-5(-2)+12

-4-(-10)+12

6+12

18

Step-by-step explanation:

wel2 years ago
7 0

Answer:

18

Step-by-step explanation:

2(-2)-5(-2)+12

-4+10+12

=18

Hope this helps! ;-)

You might be interested in
Compare 4.6, 2.8..., square root 17, 3.9..., square root 8
Basile [38]
1. Square root 17= 289, Square root 8= 64.
289 = 289.00 \:  \: 64 = 64.00
4.6 > 2.8
289.00 > 64.00
289.00 > 4.6
4.6 > 3.9
2.8 < 3.9
Least to greatest:
2.8, 3.9, 4.6, 64.00, 289.00


7 0
2 years ago
I got the first two can you help me with the last one PLZ
Nat2105 [25]

1. Geometric Sequence

2. a_n = a_{n-1} * 3

3. a_n = 6 * (3)^{n-1}

Step-by-step explanation:

Given sequence is:

6, 18, 54, 162,....

Here

a_1 =6\\a_2 = 18\\a_3 = 54

(a) Is this an arithmetic or geometric sequence?

We can see that the difference between the terms is not same so it cannot be an arithmetic sequence.

We have to check for common ratio (ratio between consecutive terms of a sequence) denoted by r

r = \frac{a_2}{a_1} = \frac{18}{6}= 3\\r = \frac{a_3}{a_2} = \frac{54}{18} = 3

As the common ratio is same, the given sequence is a geometric sequence.

(b) How can you find the next number in the sequence?

Recursive formulas are used to find the next number in sequence using previous term

Recursive formula for a geometric sequence is given by:

a_n = a_{n-1} * r

In case of given sequence,

a_n = a_{n-1} * 3

So to find the 5th term

a_5 = a_4*3\\a_5 = 162*3\\a_5 = 486

(c) Give the rule you would use to find the 20th week.

In order to find the pushups for 20th week, explicit formul for sequence will be used.

The general form of explicit formula is given by:

a_n = a_1 * r^{n-1}

Putting the values of a_1 and r

a_n = 6 * (3)^{n-1}

Hence,

1. Geometric Sequence

2. a_n = a_{n-1} * 3

3. a_n = 6 * (3)^{n-1}

Keywords: Geometric sequence, common ratio

Learn more about geometric sequence at:

  • brainly.com/question/10666510
  • brainly.com/question/10699220

#LearnwithBrainly

4 0
3 years ago
Is proportional or not?
Eduardwww [97]

top four are yes yes no yes

8 0
3 years ago
PLS HELP ASAP IS FOR A TEST I REALLY NEED YALL HELP Ill mark Brainliest to correct answer
Helga [31]

Answer:50x-4Step-by-step explanation:

1x^7+1x^5+8x^4+2x^3-4

7x+5x+32x+6x-4

50x-4

3 0
3 years ago
4. Which of these types of angles have the same measure
Sati [7]
Right angles im pretty sure
6 0
2 years ago
Read 2 more answers
Other questions:
  • A geometric sequence is shown below: a0, -11, 22, a1, 88, -176.
    5·1 answer
  • Using the defects method, which relationship represents the Law of Cosines if the measure of the included angle between the side
    15·2 answers
  • Jordan spent half of his allowance at the
    13·1 answer
  • 51 is more than a number is -12. What is the number?
    6·1 answer
  • What is 32% in fraction form
    14·2 answers
  • PLS HELP :( WILL GIVE BRAINLIEST+ 25 POINTS
    12·1 answer
  • 10 is 6% of what number
    15·1 answer
  • In a school,7÷16of the students are girls. what fraction of the students are boys?
    7·1 answer
  • I have more to come help please:(
    5·1 answer
  • X+3&lt;9 answer pls 2x+5&lt;12
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!