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
natulia [17]
2 years ago
9

Calculate the value of 4x2 + xy when x = 3 and y=-2.

Mathematics
1 answer:
Alchen [17]2 years ago
4 0

Answer:

Step-by-step explanation:

4x squared + xy

4x(4x) + xy

12(12) + 3 x 2

144 + 6

= 150

You might be interested in
D 2. Which of the following is correctly written in Standard Form?
Naily [24]

Answer:

Step-by-step explanation:

Ummm, y = mx+b is called the slope-intercept form because you can just read them off:

slope = m

y-intercept = b

Now can you pick a choice?

7 0
3 years ago
Read 2 more answers
If the flour to sugar ratio is 5 liters flour to 1 liter sugar, then how much sugar is needed if only 2 liters of flour are used
Gwar [14]
5l four = 1l of sugar
2l flour = 0.4l Sugar
3 0
3 years ago
Read 2 more answers
At what point does the curve have maximum curvature? y = 9 ln(x) (x, y) =
Andrews [41]

y = 9ln(x) 
<span>y' = 9x^-1 =9/x</span>
y'' = -9x^-2 =-9/x^2

curvature k = |y''| / (1 + (y')^2)^(3/2) 

<span>= |-9/x^2| / (1 + (9/x)^2)^(3/2) 
= (9/x^2) / (1 + 81/x^2)^(3/2) 
= (9/x^2) / [(1/x^3) (x^2 + 81)^(3/2)] 
= 9x(x^2 + 81)^(-3/2). 

To maximize the curvature, </span>

we find where k' = 0. <span>
k' = 9 * (x^2 + 81)^(-3/2) + 9x * -3x(x^2 + 81)^(-5/2) 
...= 9(x^2 + 81)^(-5/2) [(x^2 + 81) - 3x^2] 
...= 9(81 - 2x^2)/(x^2 + 81)^(5/2) 

Setting k' = 0 yields x = ±9/√2. 

Since k' < 0 for x < -9/√2 and k' > 0 for x > -9/√2 (and less than 9/√2), 
we have a minimum at x = -9/√2. 

Since k' > 0 for x < 9/√2 (and greater than 9/√2) and k' < 0 for x > 9/√2, 
we have a maximum at x = 9/√2. </span>

x=9/√2=6.36

<span>y=9 ln(x)=9ln(6.36)=16.66</span>  

the answer is
(x,y)=(6.36,16.66)
7 0
3 years ago
Help me worth 25 points
eimsori [14]
Your area is 37, hope this helps.
6 0
3 years ago
if one face of a cube has an area of 6.75 square inches , what is the surface area of the entire cube ?​
Travka [436]

Answer:

40.5

Step-by-step explanation:

a cube has 6 faces so 6.75 x 6 = 40.5

3 0
3 years ago
Other questions:
  • Consider the point.
    13·1 answer
  • If log a= -5, what is the value of a?
    13·2 answers
  • A) 12 ft<br> b) 21 ft<br> c) 63 ft<br> d) 81 ft
    14·1 answer
  • 36x^2=4<br> solve by factorin
    13·1 answer
  • Which of the following could be an example of a function with a domain
    14·2 answers
  • 12ab = 4 solve for a
    9·2 answers
  • Write an expression with four like terms. your expression should have three different variables and a constant.
    6·1 answer
  • Multiply the binomials. (3x-y)(x+2y) and (x +6)^2
    5·1 answer
  • Classify 4x^3 – 8x^2- 4x^5
    13·1 answer
  • in a bowl, there are green candies for every 5 red candies. If the bowl has a total of 160 candies (red and green only), which p
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!