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
Solnce55 [7]
3 years ago
10

11. Determine the product of (-4c + 3d)(-4c - 3d).

Mathematics
1 answer:
Artemon [7]3 years ago
7 0
The answer is 16c^{2] - 9d^{2}, or A. 

We can solve this problem by easily by factoring. Right off the bat, we can see that this is the difference of 2 squares. The difference of two square's factored form is (a+b)(a-b), which is what this equation is in right now. But, if we want the unfactored form, then we need to do a^{2} - b^{2}, with a being -4c and b being 3d. -4c squares. Simplifying those values, we get 16c^{2] - 9d^{2}, which is the same as A.
You might be interested in
Which of the following are irrational numbers? Select all that apply. [Look at the photo to see the answer choices.]
AlexFokin [52]
The answers are b., d., and e.
4 0
2 years ago
WILL GIVE BRAINLIEST
Ray Of Light [21]

Answer:

(x,y) --> (x, y-5)

Step-by-step explanation:

the y-intercept of f(x) = (0,2)

the y-intercept of g(x) = (0, -3)

-3 - 2 = -5

4 0
3 years ago
Please solve with explanation (high points)
Hunter-Best [27]

Step-by-step explanation:

so, we have a large triangle made of the 2 cables as legs and the ground distance AB as baseline.

the tower is the height to the baseline of that large triangle.

let's call the top of the tower T.

and remember, the sum of all angles in a triangle is always 180°.

we know the angle A = 62°, and angle B = 72°.

assuming that AB is a truly horizontal line that means that the 2 legs (cables) have different lengths, the triangle is not isoceles, and the tower is not in the middle of the baseline.

so, the height (tower) splits the baseline into 2 parts. let's call them p and q.

p + q = 12 m

p = 12 - q

let's simply define that p is the part of the baseline on the A side, and q is the part of the baseline on the B side.

we have now 2 small right-angled triangles the large height (tower) splits the large triangle into.

one has the sides

AT, height (tower), p

angle A = 62°

angle T = 180 - 90 - 62 = 28°

the other has the sides

BT, height (tower), q

angle B = 72°

angle T = 180 - 90 - 72 = 18°

now remember the law of sine :

a/sin(A) = b/sin(B) = c/sin(C)

with the sides and the associated angles being opposite.

p/sin(28) = height/sin(62)

q/sin(18) = height/sin(72)

we know from above that

p = 12 - q

so,

(12 - q)/sin(28) = height/sin(62)

height = (12 - q)×sin(62)/sin(28)

q/sin(18) = height/sin(72)

height = q×sin(72)/sin(18)

and therefore, as height = height we get

(12 - q)×sin(62)/sin(28) = q×sin(72)/sin(18)

(12 - q)×sin(62)×sin(18) = q×sin(72)×sin(28)

12×sin(62)×sin(18) - q×sin(62)×sin(18) =

= q×sin(72)×sin(28)

12×sin(62)×sin(18) = q×sin(72)×sin(28) + q×sin(62)×sin(18) =

= q×(sin(72)×sin(28) + sin(62)×sin(18))

q = 12×sin(62)×sin(18) / (sin(72)×sin(28) + sin(62)×sin(18))

q = 4.551603755... m

p = 12 - q = 7.448396245... m

height = q×sin(72)/sin(18) = 14.00839594... m ≈ 14 m

the cell tower is about 14 m tall.

7 0
1 year ago
-0.111c + 1 = 0.889c
Elena-2011 [213]

Answer:

-0.111c + 1 = 0.889c = c=1

Subtract 0.889c from both sides:

−0.111c+1−0.889c=0.889c−0.889c

−c+1=0

Subtract 1 from both sides.:

−c+1−1=0−1

−c=−1

Divide both sides by -1.:

-c/1 = -1/-1

Therefore, your answer is c=1

7 0
3 years ago
What is the area of the triangle?<br> 4<br> 6<br> units?<br><br> I NEED HELP
fgiga [73]

Answer: I believe its 24.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the y-intercept of the graph of the following data? a (-1, 0) b (0, 3) c (0, -3) d (1, 6).
    12·1 answer
  • What does being able to express numbers in equivalent forms allow you to do
    12·1 answer
  • polygon ABCD is defined by the points A(-4,2), B(-2,4), C(1,3), and D(2,2). match the coordinates of the points you f the transf
    5·1 answer
  • Simplify the expression 256b − b by combining like terms.
    8·1 answer
  • I need help ASAP giving brainliest!!
    11·2 answers
  • ) Encuentra dos números consecutivos cuya suma sea 57.​
    8·1 answer
  • Karen spent all but $8 of her savings in three stores. In each store she spent $2 less than half of what she had when she went i
    13·1 answer
  • Juanita constructed a number line to test her brother's understanding of opposites. She tested him on all points that were label
    6·2 answers
  • If possible, can anyone help with these two? --sorry, im dumb ;-;-- THANKS!
    15·1 answer
  • What is the cost of buying 10 tickets if 4 tickets cost 122 dollars?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!