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
Dafna11 [192]
3 years ago
14

Evaluate 2b2 - 3b + 4a2 for a= -6 & b=8 A. -40 B. 202 C. 248 D. 346

Mathematics
1 answer:
iren2701 [21]3 years ago
6 0
2(8)² - 3(8) + 4(-6)² = 2(64) - 24 + 4(36) = 128 - 24 + 144 = 248
You might be interested in
Can an expert help me with this. thanx
pogonyaev

141 perimeter

I cannot help with the area tho.

7 0
3 years ago
cos (x°) = sin (90 - x°) Using complete sentences, explain why an infinite number of x values that will prove the trigonometric
Setler79 [48]
Cosx= sin(90-x)
From the RHS,
sin(90-x)= sin90cosx-cos90sinx
Since sin90=1, cos90=0
sin90cosx-cos90sinx=cosx-0=cosx (proven)
6 0
4 years ago
Read 2 more answers
Can you guys help me with this please it suppose to use the synthetic substitution or the remainder theorem.
Brilliant_brown [7]

9514 1404 393

Answer:

  (b)  -36

Step-by-step explanation:

Synthetic division is often performed using a table of the kind shown in the attachment. The coefficients of f(x) are placed across the top, and the x-value to be evaluated is placed at the left. The rule for finding table entries is shown. (The first (left-most) number at the bottom is the leading coefficient of the polynomial.)

This table shows the remainder, which is f(-2), is -36.

__

The equation itself can be rewritten in "Horner form" to facilitate evaluation.

  f(x) = (((-x +2)x -1)x +4)x +8

In this form, substituting for x and doing the evaluation is easier for mental arithmetic. You will notice that the contents of parentheses at each level match the bottom line of the synthetic division table.

  f(-2) = (((-(-2) +2)(-2) -1)(-2) +4)(-2) +8

  = (((4)(-2) -1)(-2) +4)(-2) +8

  = ((-9)(-2) +4)(-2) +8

  = (22)(-2) +8

  = -36

  f(-2) = -36 . . . . remainder from synthetic substitution

6 0
3 years ago
Kerry ran 3/4 mile. Sherrie ran 1/2 mile . marcie ran 2/3 mile. List the friends in irder from who ran the least dustance to who
Keith_Richards [23]
3/4 would be the greatest distance.
2/3 would be the next greatest distance.
1/2 would be the least greatest distance.

HOPE THIS HELPED
:)
8 0
4 years ago
What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)?
irakobra [83]

Answer:

Vertex (5 ,-9)

Step-by-step explanation:

Given : Function f(x) = (x – 8)(x – 2).

To find : What is the vertex of the quadratic function .

Solution : We have given that f(x) = (x – 8)(x – 2).

On removing parenthesis

f(x) = x²-2x -8x +16.

f(x) = x²-10x +16.

We need to find vertex of this function ,

Vertex: (h, k)

h = -\frac{b}{2a}.

Plugging values

h = -\frac{-10}{2(1)}.

h = 5 this is the x- coordinate,

Now , we will plug x= 5 in quadratic function .

k  = (5)²-10(5)+16.

k = 25-50 + 16

k= -9.

Vertex (5 ,-9)

Therefore, Vertex (5 ,-9).

5 0
3 years ago
Read 2 more answers
Other questions:
  • First right answer gets 10 points
    9·1 answer
  • What value of X would make U tangent to circle P at point Q
    15·2 answers
  • If the pint of ice cream cost 89 cents how must would 1/2 a gallon cost?
    11·1 answer
  • Solar-heat installations successfully reduce the utility bill 60% of the time. What is the probability that at least 9/10 solar-
    10·1 answer
  • You are pulling a block from a bag containing 4 red 3 blue 2 green or 1 orange blocks. What is the probability that you draw a r
    7·1 answer
  • 3. A ball bounces and you are launching a rock to hit it. The equation of the ball bouncing is
    9·1 answer
  • A movie complex is showing the same movie in three theaters. In theater​ A, 72 of the 90 seats are taken. In theater​ B, 51 seat
    9·1 answer
  • Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
    14·2 answers
  • A figure is created by using four semicircles and a rectangle. which is closest to the area of the figure? ​
    11·1 answer
  • Find the measure of angle x in the figure below<br><br> 50<br> 75<br> 115<br> 130
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!