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
joja [24]
3 years ago
9

How do you solve this step by step?

Mathematics
2 answers:
kolezko [41]3 years ago
5 0

Answer:

90

Step-by-step explanation:

Evaluate x^2 + 2 x^2 + 3 x^2 + 4 x^2 where x = 3:

x^2 + 2 x^2 + 3 x^2 + 4 x^2 = 3^2 + 2×3^2 + 3×3^2 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×3^2 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×9 + 4×3^2

3^2 = 9:

3^2 + 2×9 + 3×9 + 4×9

3^2 = 9:

9 + 2×9 + 3×9 + 4×9

2×9 = 18:

9 + 18 + 3×9 + 4×9

3×9 = 27:

9 + 18 + 27 + 4×9

4×9 = 36:

9 + 18 + 27 + 36

| 3 |  

| 3 | 6

| 2 | 7

| 1 | 8

+ | | 9

| 9 | 0:

Answer:  90

san4es73 [151]3 years ago
5 0

Answer:

270

Step-by-step explanation:

first you would put a 3 in all of the X

3^2+2(3)^2+3(3)^2+4(3)^2

9+36+81+144

270

You might be interested in
I need help with this and also the explanation plz
RoseWind [281]

Answer:

The correct answer is 0 or A

Step-by-step explanation:

2/0+2 + 1/5 = 6/0+5

2/2 + 1/5 = 6/5

1 + 1/5 = 6/5

5/5 + 1/5 = 6/5

6/5 = 6/5

7 0
3 years ago
Gandalf the grey started in the forest of mirkwood at a point pp with coordinates (−2,1)(−2,1) and arrived in the iron hills at
AlladinOne [14]
Travel direction 3i + 2j, slope = 2/3.
We have slope and a point (-2,1) this gives us a line equation:
 LINE BEFORE THE TURN, EQUATION: y = (2/3)x + 1

The point of intersection of the two lines:
1) through (-2,1) with slope 2/3 and;
2) through (-1,6) with slope 3/2. 
8 0
3 years ago
10 points times quiz
Lyrx [107]

Answer:

Option 3 is right

Step-by-step explanation:

-2/3 = -.66

-3/5 = -.60

-1/2 = -.50

5/8 = .625

6 0
3 years ago
Read 2 more answers
1/2x+3=-1<br><br><br><br><br> HELP ASAP!!
fenix001 [56]

Step-by-step explanation:

\frac{1}{2} x + 3 =  - 1 \\  \frac{x}{3}  + 3 =  - 1 \\  \frac{x}{3}  =  - 1 - 3 \\  \frac{x}{3}  =  - 4 \\ x =  - 4 \times 3 \\ x =  - 12

4 0
2 years ago
Read 2 more answers
Ben rode his bike 3 miles today. Tomorrow he plans to ride 13 times as far. In this equation, n represents the number of miles B
olga2289 [7]

Answer

n=45 miles

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • The number a is increased by the number b
    10·1 answer
  • A small rectangular swimming pool in a fitness centre measures 4 metres by 10 metres. It is surrounded by a path of width x mete
    14·1 answer
  • Determine the radius of convergence of the following power series. Then test the endpoints to determine the interval of converge
    9·1 answer
  • How many common fractions strictly between 0 and 1 have a denominator of at most 6 when written in lowest term
    12·2 answers
  • Please helpppp it has to do with P(A U B)
    5·1 answer
  • At a pet store the ratio of cats to dogs sold was 5 : 3. If there were 40 cats that were sold, how many dogs were sold?
    13·1 answer
  • A race organizer brought 24 gallons of sports drink for a race. How many quarts of sports drink did he buy?
    15·2 answers
  • Rewrite into standard form A. 4.23 x 10^-8 <br> B. 1.89 x 10^12 <br> C. 6.2 x 10^-1 <br> Pls help
    5·1 answer
  • WILL MARK!! pls help:) <br> Find x and y so that ABCD will be a parallelogram.
    11·1 answer
  • Ray has $30 saved and saves $2 a week and Joe has $90 saved and spends $4 a week when will they have the same amount of money sa
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!