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3 years ago

I need a boy bestfriend

Mathematics

2 answers:

creativ13 [48]3 years ago

8 0

Um okay...

Anyways...

Alekssandra [29.7K]3 years ago

7 0

Answer:

Step-by-step explanation:

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Find the domain and the range of the given relation {(-6, 0), (-1,5), (9, -3), (-3,9)}

stira [4]

Answer:

domain: {-6, -1, 9, -3}

range: {0, 5, -3, 9}

Step-by-step explanation:

domain is the x-values and range is the y-values

5 0

3 years ago

Write an equation of the parabola that opens up whose vertex (−1, 2) is 3 units from the focus. (Vertex form or Parabola Form is

TEA [102]

Answer:

y2 = 4ax (opens right, a > 0)

y2 = -4ax (opens right, a > 0)

x2 = 4ay (opens up, a > 0)

x2 = -4ay (opens down, a > 0)

Vertex at (h, k) :

(y - k)2 = 4a(x - h) (opens right, a > 0)

(y - k)2 = -4a(x - h) (opens right, a > 0)

(x - h)2 = 4a(y - k) (opens up, a > 0)

(x - h)2 = -4a(y - k) (opens down, a > 0)

Equation of a Parabola in Vertex form

Vertex at Origin :

y = ax2 (opens up, a > 0)

y = -ax2 (opens down, a > 0)

x = ay2 (opens right, a > 0)

x = -ay2 (opens left, a > 0)

Vertex at (h, k) :

y = a(x - h)2 + k (opens up, a > 0)

y = -a(x - h)2 + k (opens down, a > 0)

x = a(y - k)2 + h (opens right, a > 0)

y = -a(y - k)2 + h (opens left, a > 0)

Step-by-step explanation:

7 0

3 years ago

4x−3/2 − 5−2x/3 − 3x−4/3 = 5

babunello [35]

Answer:

Step-by-step explanation:

4x - 3/2 - 5 - 2x/3 - 3x - 4/3 = 5

Give all terms least common denominator of 6:

4x(6/6) - 3/2(3/3) - 5(6/6) - 2x/3(2/2) - 3x( 6/6)- 4/3(2/2) = 5(6/6)

24x/6 - 9/6 - 30/6 - 4x/6 - 18x/6 - 8/6 = 30/6

Combine x terms and numerical terms:

2x/6 - 47/6 = 30/6

2x/6 = 77/6 (Add 47/6)

2x = 77 (Multiply both sides by 6)

x = 77/2 = 38.5

3 0

3 years ago

A spinner has 4 equal sections. after 12 spins, the spinner landed on section a 4 times, section b 5 times, section c 2 times, a

Eduardwww [97]

Answer:

The Experimental Probability of the spinner stopping on Section A is 1/3.

Step-by-step explanation:

Number of time spinner landed on section A = 4

Number of time spinner landed on section B = 5

Number of time spinner landed on section C = 2

Number of time spinner landed on section D = 1

Total Number of spins = 12

$Probability=\frac{Number\:of\;Favorable\:outcome}{Number\:of\:total\;outcome}=\frac{4}{12}=\frac{1}{3}$

Therefore, The Experimental Probability of the spinner stopping on Section A is 1/3.

6 0

4 years ago

Sina×tga=1/2, cosa=?

ArbitrLikvidat [17]

Answer:

cos a = -1.28 and 0.78

Step-by-step explanation:

The question is not properly written. This is the correct question:

If sina×tan(a) = 1/2, find cosa

According to trigonometry identity;

tan a = sina/cosa

sina×tan(a) = sin a * sina/cosa

sin²a/cos a = 1/2

(1-cos²a)/cosa = 1/2

Cross multiply

2(1-cos²a) = cos a

2 - 2 cos²a = cos a

2cos²a + cos a - 2 = 0

Let P = cos a

2P² + P -2 = 0

P = -1 ±√1-4(2(2)/2(2)

P = -1 ±√1+16/4

P = -1 ±√17/4

P = -1±4.12/4

P = -1-4.12/4 and -1+4.12/4

P = -5.12/4 and 3.12/4

P = -1.28 and 0.78

Since P = cos a

Hence cos a = -1.28 and 0.78

7 0

3 years ago