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3 years ago

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Mathematics

2 answers:

olga55 [171]3 years ago

6 0

Answer:

exponential decay

Step-by-step explanation:

The line is going down

Delvig [45]3 years ago

4 0

The answer on the picture is d

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Angle A is circumscribed about circle O what is the length of AB

Nana76 [90]

Answer:

$AB \approx 4.054$

Step-by-step explanation:

The trigonometric equations associated with the figure are, respectively:

$AB = 4\cdot \cos 73^{\circ} + 3\cdot \cos \alpha$

$4\cdot \sin 73^{\circ} = 3 +3\cdot \sin \alpha$

The components with the unknown angle are cleared and used in the fundamental trigonometric relation:

$3\cdot \cos \alpha = AB - 4\cdot \cos 73^{\circ}$

$3\cdot \sin \alpha = 4\cdot \sin 73^{\circ} - 3$

$9\cdot \cos^{2}\alpha + 9\cdot \sin^{2}\alpha =(AB-4\cdot \cos 73^{\circ})^{2}+(4\cdot \sin 73^{\circ}-3)^{2}$

$9 = AB^{2}-2.339\cdot AB + 1.368 + 0.681$

The following second-order polynomial is presented below:

$AB^{2}-2.339\cdot AB -6.951 = 0$

Roots of the polynomial are described hereafter:

$AB_{1} \approx 4.054$ and $AB_{2} \approx -1.715$

Only the first root is reasonable, as length is a positive variable. The length is $AB \approx 4.054$ .

6 0

3 years ago

HELP DUE IN 15 MINS! x=??

ad-work [718]

Answer:

Step-by-step explanation:

Remark

The angle formed by the intersection of a tangent to a circle and an intersecting secant is 1/2 (Arc PS - arc PR)

PS = 208

PR = 74

Solution

x = 1/2 (208 - 74)

x = 1/2 (134)

x = 67

4 0

3 years ago

2x - 2y = 12 29. - 3y = -2

Sophie [7]

Olá boa tarde meu nome é "Guilherme" sou de Brasil e vou resolver a sua pergunta

a ) 2x - 2y = 12

{ a 2

{ b 2

{ c 12

/\ = b elevado 2 -4 a.c

/\ = (2) elevado 2 -4 . 24

/\ = 4 -4 . 24

/\ = 24

X = -b+/ /\ = 2 - 5

2a 2

5

S = {20,10}

b) 29. - 3y = -2

{ a = 29

{ b = -3

{ c = -2

/\ = b elevado 2 -4 a.c

/\ = (-6) -4 . 58

/\ = -10 . 58

/\ = -48

X = b + / /\ = -3 + 24

5

S = { 15,15}

Espero ter ajudado

2a 2

3 0

3 years ago

Gracie has 5 quarters 4 nickels and 1 penny in her pocket. She selects a coin at random. What is the probability of selecting a

irina1246 [14]

Answer:

2/5

Step-by-step explanation:

5+4+1 = 10. If you have 4 nickels out of 10 coins, it means there is a 4/10 chance of selecting one, but to simplify, 2 is the greatest common factor, so you would divide each number.

4/2 = 2.

10/2 = 5.

The answer is 2/5.

3 0

4 years ago

The surface area of a spherical lampshade is 57.76

Kisachek [45]

We are given area of the spherical lampshade = 57.76 \pi square inches.

We know formula of area of a spherical shape:

$A = 4\pi r^2$

Plugging area A= 57.76 π in formula, we get

$57.76\pi= 4\pi r^2$

Dividing both sides by 4π, we get

$\frac{57.76\pi}{4\pi} = \frac{4\pi r^2}{4\pi}$

$14.44 = r^2$

Taking square root on both sides, we get

$\sqrt{14.44} = \sqrt{r^2}$

r =3.8.

<h3>Therefore, the radius of the lampshade is 3.8 inches.</h3>

7 0

4 years ago