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dimulka [17.4K]
3 years ago
10

Quickly

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0
B(-4; 1)

3 units right → x + 3
2 units down → y - 2

B'(-4 + 3; 1 - 2) → B'(-1; -1)
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I NEED HELP WITH THIS!! I WILL OFFER BRAINLIEST FOR THE BEST ANSWER! HOWEVER, ANY ABSURD ANSWERS WILL BE REPORTED!!
marusya05 [52]
The answer is B I believe
5 0
2 years ago
Using addition formula solve tan 15​
salantis [7]

Answer:

2 - \sqrt{3}

Step-by-step explanation:

Using the addition formula for tangent

tan(A - B) = \frac{tanA-tanB}{1+tanAtanB} and the exact values

tan45° = 1 , tan60° = \sqrt{3} , then

tan15° = tan(60 - 45)°

tan(60 - 45)°

= \frac{tan60-tan45}{1+tan60tan45}

= \frac{\sqrt{3}-1 }{1+\sqrt{3} }

Rationalise the denominator by multiplying numerator/ denominator by the conjugate of the denominator.

The conjugate of 1 + \sqrt{3} is 1 - \sqrt{3}

= \frac{(\sqrt{3}-1)(1-\sqrt{3})  }{(1+\sqrt{3})(1-\sqrt{3})  } ← expand numerator/denominator using FOIL

= \frac{\sqrt{3}-3-1+\sqrt{3}  }{1-3}

= \frac{-4+2\sqrt{3} }{-2}

= \frac{-4}{-2} + \frac{2\sqrt{3} }{-2}

= 2 - \sqrt{3}

3 0
3 years ago
In A ABC, AB = 51 cm, BC = 52 cm and CA = 101 cm, then find the area of A ABC,​
liberstina [14]

Step-by-step explanation:

sorry..by any chance if my answer is incorrect

7 0
3 years ago
What is the value of x in the equation 7x+2v =48 when y =3​
Phantasy [73]

Answer:

3 3/7

Step-by-step explanation:

7x+2v=48

2v. -2

-------

46

7x+46=48

-46. -46

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

7x=2/7. x=2/7=1/7

x=1/7

4 0
3 years ago
Read 2 more answers
A line passes through (−2, 5) and has slope 13 . What is an equation of the line in point-slope form
ruslelena [56]
Y - y1 = m(x - x1)
slope(m) = 13
(-2,5)...x1 = -2 and y1 = 5
sub...pay attention to ur signs
y - 5 = 13(x - (-2)...not done yet
y - 5 = 13(x + 2) <== point slope form
3 0
3 years ago
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