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Bas_tet [7]
3 years ago
13

Whose correct & whats an equation to solve for x.

Mathematics
1 answer:
Effectus [21]3 years ago
3 0

Answer:

Step-by-step explanation:

x is the side opposite the angle of 12 degrees

we know the hypotenus  is 20 ft

we don't know what the side length that is adjacent to the angle

----------------

ADJ/HYP = cos (of the angle)

OPP/HYP  = sin (of the angle)

sin/cos = tan (of the angle) = ( OPP/HYP) / (ADJ/HYP)  = OPP/ ADJ

How would we solve for x the side opposite the angle?

So who is right?

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(09.02)
dmitriy555 [2]
X^2 - 7x + 12 = 0
x^2 - 4x - 3x + 12 = 0
x (x - 4) -3 ( x - 4) = 0
(x - 4) (x - 3) = 0
x = 3 , 4

Check the answer by plugging in 3 and 4 for x, if the equation equals zero then you have your answer.
4 0
2 years ago
For problems 1-5, use the unit circle to calculate the given values.
OverLord2011 [107]

Answer:

1=120

2=30

3=150

4=240

5=300

Step-by-step explanation:

i used a calculator

6 0
3 years ago
Multiply (3c+2p)(3c-2p) what is the answer?​
Len [333]

9514 1404 393

Answer:

  9c² -4p²

Step-by-step explanation:

The product of a sum and difference of the same two terms is the difference of their squares:

  (3c +2p)(3c -2p) = 3c(3c -2p) +2p(3c -2p)

  = (3c)² -6cp +6cp -(2p)²

  = (3c)² -(2p)² = 9c² -4p²

4 0
3 years ago
Help ASAP please please 14 and 15
Yuliya22 [10]
I think 14 is B (idrk) and 15 is definitely C
8 0
3 years ago
Mark buys a wooden board that is 7 1/2 feet long. The cost of the board is $0.50 per foot, including tax. What is the total cost
artcher [175]

Answer:

Total cost of Mark's board is $3.75.

Step-by-step explanation:

We are given the following in the question:

Length of wooden board =

=7\dfrac{1}{2}\text{ foot}

Unit cost of board = $0.50 per foot

Total cost of board =

=\text{Length of board}\times \text{Unit cost of board}\\\\=7\dfrac{1}{2}\times 0.50\\\\=\dfrac{15}{2}\times \dfrac{1}{2}\\\\=\dfrac{15}{4} = 3.75\$

Thus, total cost of Mark's board is $3.75.

7 0
2 years ago
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