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Stels [109]
3 years ago
7

Help! Please! You can just give answers if want to make It faster.

Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer:

X' = (-3 , -5)

Y' = (-1, -1)

Z' = (4, -8)

General rule: (x,y) = (y, -x)

I am 1 brainly away from the next rank, your help would be appreciated

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Find the exact value, without a
Ghella [55]

Answer:

√(2 + √3)/4

Step-by-step explanation:

Sine 5π/12 = Sine (5π/6)/2

Recall

π = 180°

Thus,

Sine (5π/6)/2 = Sine (5×180 /6)/2

= Sine 150/2

Recall

Sine θ/2 = √(1 – Cos θ)/2

Thus,

Sine 150/2 = √(1 – Cos 150)/2

But, Cosine is negative in the 2nd quadrant. Thus,

Cos 150 = – Cos 30 = –√3/2

Thus,

√(1 – Cos 150)/2 = √(1 – –√3/2 )/2

= √(1 + √3/2 )/2

= √[(2 + √3)/2 ÷ 2]

= √[(2 + √3)/2 × 1/2]

= √(2 + √3)/4

Therefore,

Sine 5π/12 = √(2 + √3)/4

4 0
2 years ago
A restaurant charges an automatic gratuity of 18% on tables with more than 6 people. A party of 8 had a bill of p. Which express
Bond [772]
0.18p

a brainliest would be appreciated ❤️
7 0
3 years ago
Which of the following could be the equation of a line parallel to the line y=-4x+1
saveliy_v [14]
It would be D.
Because the slope is the same but the yint is different
5 0
3 years ago
Read 2 more answers
B
Alenkinab [10]

Answers:  

hypotenuse = 20 feet

longer leg = 16 feet

======================================================

Explanation:

c = x = length of the hypotenuse

a = x-4 = length of one of the legs

b = 12 = length of the other leg

Use the pythagorean theorem

a^2 + b^2 = c^2

12^2 + (x-4)^2 = (x)^2

144 + x^2 - 8x + 16 = x^2

144 - 8x + 16 = 0 .... the x^2 terms cancel

160-8x = 0

160 = 8x

8x = 160

x = 160/8

x = 20 is the hypotenuse

x-4 = 20-4 = 16 is the longer leg

--------

Check:

12^2+16^2 = 144+256 = 400

20^2 = 400

Since 12^2+16^2 = 20^2 is true, this means we have a right triangle with legs of 12 and 16, while the hypotenuse is 20. The answer is confirmed.

6 0
2 years ago
A true-false test consists of 50 questions. how many does a student have to get right to convince you that he is not merely gues
umka2103 [35]
Hmmm. 20 or 30 so the teacher will count the rest,if a student guessed, wrong or right
7 0
2 years ago
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