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
Leviafan [203]
3 years ago
11

What is the value of 7x squared + 2x when x = 3

Mathematics
1 answer:
Vadim26 [7]3 years ago
7 0

Answer:

The value of equation is 69   at x=3

Step-by-step explanation:

Given Equation:

        7x^2+2x

We have to find the value of the expression at x=3

Putting the value of 'x' in the given equation.

                 =7(3)^2+2(3)\\

                 =(7*9)+6\\63+6\\69

The value of the above expression at x=3 is 69.

You might be interested in
Richard and Teo have a combined age of 26 . Richard is5 years older than twice​ Teo's age. How old are Richard and​ Teo?
loris [4]

Answer:Teo's age = 7 years ,Richard's age = 19 years

Step-by-step explanation:

Step 1

Let Teo's age be represented as x

Such that Richard 's age = 5 + 2x

and their combined ages equaling 26 can be expressed as

x + 5+ 2x = 26

Step 2 --- SOLVING

x + 5+ 2x = 26

3x+ 5= 26

3x= 26-5

3x= 21

x = 21/3

x = 7

Teo's age = 7 years

Richard's age = 5+2x= 5 + 14= 19 years

8 0
3 years ago
Convert 6 kilometers to yards
NISA [10]
1 km=1093.61yards

6 km= 6*1093.61yards
6 km= 6561.66yards

Answer= 6561.66 yards
7 0
3 years ago
What is the slope of the line passing through the points (1, 3) and (3, 9)?
Dvinal [7]

Answer:

slope is 3

Step-by-step explanation:

Mark brainliest plz

Its correct

3 0
3 years ago
Read 2 more answers
What is the value on the number line for the blue dot
rosijanka [135]

Answer:

I believe 4, but I might be wrong.

Step-by-step explanation:

If you look, it's going down -4 every time. So that means if you're going up, it's going +4 after you skip a space. So, skip, then 0, then skip, and that's 4.

4 0
3 years ago
Read 2 more answers
An investor invested a total of $2,800 in two mutual funds. One fund earned 5% profit while the other earned 3% profit. If the i
Natasha_Volkova [10]

Answer:

The amount invested in the mutual fund that earned 5% was $1,000

The amount invested in the mutual fund that earned 3% was $1,800

Step-by-step explanation:

Let

x ----> the amount invested in the mutual fund that earned 5%

y ----> the amount invested in the mutual fund that earned 3%

we know that

x+y=2,800 ----> y=2,800-x ----> equation A

5\%=5/100=0.05

3\%=3/100=0.03

0.05x+0.03y=104 ----> equation B

Solve the system by substitution

substitute equation A in equation B

0.05x+0.03(2,800-x)=104

Solve for x

0.05x+84-0.03x=104

0.05x-0.03x=104-84

0.02x=20

x=\$1,000

<em>Find the value of y</em>

y=2,800-x

y=2,800-1,000=\$1,800

therefore

The amount invested in the mutual fund that earned 5% was $1,000 and the amount invested in the mutual fund that earned 3% was $1,800

5 0
3 years ago
Other questions:
  • A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the ave
    14·1 answer
  • ( Don't Report Pleaseee) Yoooo do you guise agree me on that japan should make a skateboarding anime show like bro like i feel l
    7·2 answers
  • How can the transformation shown be described? Check all that apply. dilation isometric transformation nonrigid transformation r
    6·2 answers
  • True or false? V(x) is a function
    14·1 answer
  • Which of these ordered pairs could not be a dilation of (8, -4)? (2, -1) (2, -2) (16, -8) (4, -2)
    10·2 answers
  • WILL GIVE BRAINLIEST!!!
    14·2 answers
  • Find the positive value of x if 4 - 2x] = 6.
    8·1 answer
  • Z-x/3=y solve for z<br>it's on a quiz hurryyy​
    12·1 answer
  • 24. $5.24 + 23¢ + 2¢ (53)​
    9·1 answer
  • Can someone find the domain and range in this graph i’m having trouble
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!