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3 years ago

Find the value of x- plz helppp mee

Mathematics

2 answers:

Ugo [173]3 years ago

5 0

Answer:

67.5°

Step-by-step explanation:

The given angle is 45°, so the remaining to angles must collectively make up the rest of the 180°. In this situation, the opposite sides are congruent, and therefore the angles are identical. So, from the remaining 135° that need to be accounted for, we would simply divide by 2, and get 67.5°.

maw [93]3 years ago

4 0

Answer:

67.5

Step-by-step explanation:

Im pretty sure this is the answer. A triangle is 180º so you do 180-45 and divide it by 2.

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The Johnson Farm has 500 acres of land allotted for cultivating corn and wheat. The cost of cultivating corn and wheat (includin

babunello [35]

Answer:

He should plant 100 acres of corn and 400 acres of wheat.

Step-by-step explanation:

This problem can be solved by a siple system of equations.

]x denotes the number of acres of corn

y denotes the number of acres of wheat

Building the system:

The Johnson Farm has 500 acres of land allotted for cultivating corn and wheat. This means that:

$x + y = 500$

The cost of cultivating corn and wheat (including seeds and labor) is $42 and $30 per acre, respectively. Jacob Johnson has $16,200 available for cultivating these crops. This means that:

$42x + 30y = 16,200$

So, we have the following system

$1) x + y = 500$

$2) 42x + 30y = 16,200$

If he wishes to use all the allotted land and his entire budget for cultivating these two crops, how many acres of each crop should he plant?

$1) x + y = 500$

$2) 42x + 30y = 16,200$

I am going to write y as a function of x in 1), and replace in 2). So:

$x + y = 500$ means that $y = 500-x$

$42x + 30y = 16,200$

$42x + 30(500-x) = 16,200$

$42x + 15000 - 30x = 16,200$

$12x = 1,200$

$x = \frac{1,200}{12}$

$x = 100$

Now, going back to 1:

$y = 500 - x = 500 - 100 = 400$

He should plant 100 acres of corn and 400 acres of wheat.

5 0

3 years ago

V=pr^2h how to solve for r?

nikdorinn [45]

Answer:

r=sqrt(v/(pi*h))

Step-by-step explanation:

v=pi*r^2*h

divide by pi and h

r^2=v/(pi*h)

square root

r=sqrt(v/(pi*h))

3 0

3 years ago

Find the value of X. Segment addition

Maru [420]

X = 2.

Set up your equation like this:
3x + 4x = 14
7x = 14
x = 2

Hope this helped

3 0

4 years ago

Convert 3.55 grams potassium to atoms

vampirchik [111]

<span>Firstly, you'll need to convert the grams into number of mols. Since no. of mol = mass/molecular weight3.55/39.1 = 0.09079 mol because 1 mol of potassium ...</span><span>
</span>

6 0

3 years ago

Se tienen tres tanques de la misma altura (5 metro) pero sus formas son diferentes. El primero es de base circular de 3 metros d

Aleksandr [31]

Answer:

1.-dh/dt = 5.31*10⁻⁵ m/seg

2.-dh/dt = 1.99*10⁻⁵ m/seg

3.-dh/dt = 1.59*10⁻⁴ m/seg

Step-by-step explanation:PREGUNTA INCOMPLETA NO SE INDICAN LAS FORMAS DE LOS TANQUES.

Asumiremos que los tres tanques son:

el primero cilindro recto de Vc = π*r²*h ( r es radio de la base y h la altura)

el segundo asumiremos que es eliptico recto de Ve = π*a*b*h aqui a y b son los ejes de la elipse y h la altura

El tercero es un cono invertido Vco = 1/3 *π*r²*h ( r es el radio de la base.

1.-Caso del cilindro

Vc = π*r²*h

Derivando en ambos miembros de la expresión tenemos:

dV(c) / dt = π*r²*dh/dt

Sustituyendo

1.5 Lts/seg = 3.14 * (3)²*dh/dt

1.5/1000 m³/seg = 28.26 m² dh/dt

1.5/ 28260 m = dh/dt

Despejando dh/dt

dh/dt = 1.5 / 28260 = 5.31*10⁻⁵ m/seg

dh/dt = 5.31*10⁻⁵ m/seg

2.-La elipse

Ve = π*a*b*h

Aplicando el mismo procedimiento tenemos:

DVe/dt = 1.5 Lts/seg = π* 6*4* dh/dt

1.5 /1000 = 75.36 *dh/dt

dh/dt = 1.5 / 75360 m/seg

dh/dt = 1.99*10⁻⁵ m/seg

3. El cono invertido

Vco = (1/3)*π*r²*h

DVco/dt = (1/3)*π*r²*dh/dt

1.5/1000 = 9.42 *dh/dt

dh/dt = 1.5/9420

dh/dt = 1.59*10⁻⁴ m/seg

3 0

3 years ago