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mr_godi [17]
3 years ago
5

Can you solve this: 8cos^2x=6sinx+3

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0
So that's. Shans desk d didn't djks d d d d

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Find the area of a parallelogram with sides of 6 and 12 and an angle of 60°.
ASHA 777 [7]
I think I got it. Correct me if I am wrong.

Parallelogram diagram I believe down below. We must find the height and then the area using Pythagorean theorem. Since the green shaded part is a 30-60-90 triangle, the base is 1/2 the hypotenuse, therefore it is 3. Now we calculate the height with it.

A^2 + B^2 = C^2
A^2 + 3^2 = 6^2
    A^2 + 9 = 36
          A^2 = 27
              A = 3√3

Therefore the height is 3√3

Now calculate the area using A = bh

A = bh
   = (12)(3√3)
   = 36√3

So the area is 36√3 square units.

I cannot be sure of this answer because you did not provide a diagram.

4 0
3 years ago
How much larger is 8 in 8237 and 8 in 823.7
balandron [24]
Since the 8 in the first number is in the thousands place, its value it 8*1000=8000.
Since the 8 in the second number is in the hundreds place, its value is 8*100=800.

8000 is ten times 800.
Final answer: 10x as large
8 0
4 years ago
Read 2 more answers
Ana ha comprado libros, todos del mismo precio, por valor de 120 euros. El librero le regala 3 libros por lo que cada libro le c
lidiya [134]

Answer:

El primer paso será darle un nombre a nuestras variables:

x= Numero de libros comprados inicialmente

y=Precio inicial de los libros

Ahora analizamos el enunciado,

Lorena ha comprado libros todos del mismo precio por valor de 120 €

x*y=120 € (1)

El librero le regala 3 libros por lo que en realidad cada libro que cuesta 2 € menos

(x+3)(y-2)=120€ (2)

Tenemos entonces dos ecuaciones con dos incógnitas, así que podemos resolver,

Despejamos en (1)

x=120/y

Sustituimos en (2)

(120/y +3)(y-2)=120

120 - 240/y + 3y -6 =120

3y-240/y =120-120+6

3y -240/y =6

y- 80/y=6

y²-80=6y

y²-6y-80=0

Resolvemos la ecuación de segundo grado

a=1

b=-6

c=-80

Aplicando la resolvente,

(6+- √36+320)/2

6+-√356/2

(6+-18,86)/2

Como el valor de y no puede ser negativo la unica respuesta válida será:

y=12,43

Cada libro le costo 12,43€

Sustituyendo en (1)

x=120/12,43

x=9,65 como no puede ser un número racional

x=9

Lorena ha comprado 9 libros

6 0
3 years ago
Grant paid $12 for a 4 baseball card packs. How many baseball card packs can be purchase for $21
Pepsi [2]

Answer:

7

Step-by-step explanation:

Divide the 12 by 4 to see how much one is for.

After you get $3 alk you do is divide the $21 by 3

5 0
4 years ago
I don’t understand this please help
zalisa [80]

Answer:

Step-by-step explanation:

I would love to answer you but there are no questions.

7 0
3 years ago
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