EASY MATH QUESTION HELP! Under the Angle Addition Postulate, which equation would be valid?

What is true about angles 2 and 7 in the picture below?

Answer:

The real solution is [tex]n=6[/tex].

Step-by-step explanation:

[tex]\cos(\frac{\pi}{2})=0[/tex] while [tex]\sin(\frac{\pi}{2})=1[/tex]

So the equation becomes:

[tex]-64=(2(0)+2i(1))^n[/tex]

[tex]-64=(0+2i)^n[/tex]

[tex]-64=(2i)^n[/tex]

We know that [tex]2^6=64[/tex]. So let's see what [tex]n=6[/tex] gives us:

[tex](2i)^6=64i^6=64i^4i^2=64(1)(-1)=-64[/tex].

[tex]-64[/tex]  is the result we wanted.

[tex]n=6[/tex] is therefore a solution.

You have 12 cookies left because C=300

Answer:

$33 for 11 packs of paper

Answer:

Step-by-step explanation:

I take you mean that f(x) = 4x + 1. If it really is C leave a note below the question, and I'll come back if you post within the hour.

f(3) = 4*3 + 1

f(3) = 12 + 1

f(3) = 13

Answer:

1) x ≅ 51.34°

2) y ≅ 38.66°

Step-by-step explanation:

In the right triangle given in the figure

∵ The triangle has a right angle

∴ Angles x and y are acute angles and the sum of their measures is 90°

→ By using the trigonometry function tan

∵ tan(x) = opposite side to x/adjacent side to x

∵ The opposite side to x = 10

∵ The adjacent side to x = 8

→ Substitute them in the rule above

∴ tan(x) = [tex]\frac{10}{8}[/tex] = [tex]\frac{5}{4}[/tex]

→ Use the inverse of tan to find x

∵ x = [tex]tan^{-1}[/tex]([tex]\frac{5}{4}[/tex])

∴ x = 51.34019175

∴ x ≅ 51.34°

∵ x + y = 90°

∴ 51.34 + y = 90

→ Subtract 51.34 from both sides

∴ y ≅ 38.66°

[tex]46cm[/tex]

Step-by-step explanation:

[tex]5+2.5+2.5+2.5+4+(9-2.5) +(4+2.5) + 2.5 +5+9

=46[/tex]

Hope this helps

Is there supposed to be a picture or something? I don't see anything.

Answer:

Chad has $2 in total!

Step-by-step explanation:

14 - 14 -3 +5

= 2

Answer:

x = 31

Step-by-step explanation:

The sum of the internal angles = 180°

then:

2x-5 + x+10 + 2x+20 = 180

5x + 25 = 180

5x = 180 - 25

5x = 155

x = 155/5

x = 31

Check:

2*31 - 5   +  31+10   +  2*31 + 20  = 180

62-5  +   41   +  62+20 = 180

57 + 41 + 82 = 180

Answer:

7.5 kilometers

Step-by-step explanation:

i took the test

Answer:

100 adult tickets and 140 student tickets

Step-by-step explanation:

Answer:

Sold student tickets: 130, sold adult tickets: 110

Step-by-step explanation:

Let s = number of student tickets sold,

Let a = number of adult tickets sold.

[tex]s = 20+a[/tex] (It is given that there were 20 more student tickets sold than adult tickets)

[tex]s+a=240[/tex] (It is given that the total tickets sold is 240)

[tex]20+a+a = 240[/tex]

[tex]2a=220[/tex]

[tex]a = 110[/tex]

We can use substitution to find the number of student tickets:

[tex]s+a = 240[/tex]

[tex]s + 110 = 240[/tex]

[tex]s = 130[/tex]

∴110 adult tickets and 130 student tickets were sold.

I hope this helps :)

Answer:

The answer is B

Step-by-step explanation:When you do 2 pages an hour, 2 hours is 4 pages, but you dont need an extra whole hour, instead just add a half which is why the answer is 2.5 hours.

Answer:

Step-by-step explanation:

12: 8,700

13: 42

14: 70,000

15: 5,000,000,000

16: 2,210

17: 34,100

18: 1,650

19: 149

20: 290,000

Answer:

12) 8700

13) 42

14) 70000

15) 5000000000

16) 2210

17) 34100

18) 1650

19) 149

20) 290000

D it’s the base.

Shdnxnxhxb

Answer: Multiply by 2 on both sides

Answer:

Multiply by 2 on both sides

Step-by-step explanation:

Hope I helped

Answer:

that would be 3.5

Step-by-step explanation:

have a great day (:

Answer: 3 1/2

Step-by-step explanation: The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed. Therefore, a way to solve this problem is by multiplying (7/8 x 4/1) which will give us a final answer or result of 3.5 or 3 1/2.

Answer:

66

Step-by-step explanation:

The sum of all of the angles in a triangle is 180. So all three angles would add up to 180:

(a + 21) + 57 + (a - 30) = 180

Combine like terms:

2a + 48 = 180

2a = 132

a = 66

Answer:

a+21+57+a-30=180(angle of triangle)

2a+48=180

2a=180-48

2a=132

a=132/2

a=66

then,a+21=66+21 =87

a-30=66-30 =36

Step-by-step explanation:

I think this is the answer

Responder: $ 352,800

Explicación paso a paso:

Paso uno:

La pregunta destinada a decir la dimensión de la parcela rectangular es 12 m de largo y 40 m de ancho - - - no 40 m de profundidad Primero, encontremos el área de la parcela rectangular

Área = L * W Área = 12 * 14

Superficie = 168m²

Segundo paso:

En segundo lugar, se nos dice que

1m² cuesta $ 2100 Por tanto,

168m² costarán x

Multiplicación cruzada que tenemos

X = 168 * 2100 X = $ 352,800

El costo del terreno es $ 352,800

Answer: K = -14

Step-by-step explanation: solve for k by simplifying both sides of the equation then isolating the variable

Answer:

the correct answer is -15 for the equation:

3(2x − 5) = 6x + k

Hope this helped!

Step-by-step explanation:

Length of rectangular park = 175 m

Breadth of rectangular park = 150 m

Perimeter of park = 2 x (length + breadth)

= 2 x (175 + 150)

= 2 x 325 = 650 m

Since, cost of fencing park per meter = = Rs. 12

Therefore, cost of fencing park of 600 m = 12 x 650 = Rs. 7,800

Square park=250m

Perimeter of the square park x 4

=250x4

=1000m

So, the cost of the fencing at the park would have a rate of 20 per m = 1000x20

=20000

Answer:

f(1)=-1+6-6= - 1

f(2)=-4+12-6 = - 2

f(3)= - 9+18-6 = 3

f(4)= - 16+24-6 = 4

f(5)= - 25 +30 - 6= -1

Step-by-step explanation:

Alex literally just put what's in between the brackets (1,2....) in the place of x

or you just look at the graph

Hope this helps, have a great day

Answer:

 (B)

Step-by-step explanation:

LCM(15, 20) = 60

[tex]\frac{9}{15}[/tex] and [tex]\frac{14}{20}[/tex]

[tex]\frac{3}{5}[/tex] and [tex]\frac{7}{10}[/tex]

[tex]\frac{6}{10}[/tex] < [tex]\frac{7}{10}[/tex]

(B)

Answer:

A on EDGE

Step-by-step explanation:

Answer:

The answer would be the first choice ; sides jh and tr are congruent

Answer:2$

Step-by-step explanation:12-7-3

Answer:

Step-by-step explanation:

start on the y axis and go down and put a dot on -3. then from that dot go up 2 over to the right 1.