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Vilka
5 days ago
11

Part A: Solve the equation 5(x + 2) = 6x + 3x − 14, and show your work. (5 points)

Mathematics
2 answers:
Leona [4.1K]5 days ago
7 0

Answer:

Part A:

x = 6

Step-by-step explanation:

Starting with the equation 5(x + 2) = 6x + 3x - 14, apply the distributive property on the left.

(Remember, * denotes multiplication)

5 * x = 5x

5 * + 2 = 10

5x + 10 = (6x + 3x) - 14

On the right, group the similar terms together.

(6x + 3x) = 9x

5x + 10 = 9x - 14

Take the +10 on the left side across the equation to the right (switch the + to -).

5x = 9x - 14 - 10

Move the +9x from the right to the left (again, change the + to -).

5x - 9x = -14 -10

Now that all like terms are together, simplify them.

5x - 9x = -4x\\-14 - 10 = -24

-4x = -24

To isolate x, divide each side by -4.

x = 6

I hope this helps!:-)

Leona [4.1K]5 days ago
5 0

Answer:

x=8

Step-by-step explanation:

5(x+2)=6x+3x-14

This expands to 5x+10=6x+3x-14. using distributive property.

Adding up like terms gives: 10+14=8x-5x.

This simplifies to 24=3x. Here we apply addition and subtraction property.

By dividing both sides by 3, we find: 24/3 = 3x/3. This is the division property in action.

Thus, x equals 8.

> x = 8

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tester [3938]

Answer:

Step-by-step explanation:

34+23F=175

23F=175-34=141

F=141/23≈6.13

therefore, he will purchase an additional 7 bags

8 0
15 days ago
Read 2 more answers
Un globo vuela entre dos ciudades A y B, que distan entre sí 1.500 m. Los tripulantes del globo ven la ciudad A con un ángulo de
Inessa [3926]

Respuesta:

La altitud del globo por encima del nivel del suelo es de 449,6 metros.

Explicación paso a paso:

El enunciado no está completo. El texto completo es: "Un globo se desplaza entre las ciudades A y B, que se encuentran a 1.500 m de distancia. Los ocupantes del globo observan la ciudad A con un ángulo de depresión de 27°, mientras que, para la ciudad B, el ángulo es de 36°. ¿Cuál es la altura aproximada del globo con respecto al suelo?"

El diagrama que ilustra esta situación está en el archivo adjunto. Para calcular la altura del globo, se pueden emplear las funciones trigonométricas, siendo recomendable hacer uso de la función tangente para los ángulos de depresión mencionados:

Ciudad A

\tan 27^{\circ} = \frac{h}{1500\,m-x}

0,510 = \frac{h}{1500\,m-x}

Ciudad B

\tan 36^{\circ} = \frac{h}{x}

0,727 = \frac{h}{x}

Donde h y x representan la altura desde el suelo y la distancia horizontal desde la ciudad A.

Luego, se igualan las alturas en ambas ecuaciones para calcular la distancia horizontal del globo en relación a la ciudad A:

0,727\cdot x = 0,510\cdot (1500\,m-x)

1,237\cdot x = 765\,m

x = 618,432\,m

Por último, la altura del globo sobre el suelo se calcula como:

h = 0,727\cdot x

h = 0,727\cdot (618,432\,m)

h = 449,600\,m

La altura del globo respecto al nivel del suelo es 449,6 metros.

6 0
11 days ago
Josh can split a truckload of logs in 8 hours, but working with his dad, they can get it done in 3 hours. How long would it take
lawyer [4039]

Result: 4.8 hours

Detailed explanation:

Josh: \frac{1}{8}

Father: \frac{1}{x}

Together: \frac{1}{3}

Josh plus Dad equals Together

\frac{1}{8} + \frac{1}{x} = \frac{1}{3}

\frac{1}{8}*(24x) + \frac{1}{x}*(24x) = \frac{1}{3}(24x)

 3x + 24 = 8x

-3x           -3x

         24 = 5x

        ÷5     ÷5  

        4.8 = x

3 0
6 days ago
PLEASE HELP! In a word processing document or on a separate piece of paper, use the guide to construct a two column proof provin
babunello [3666]
I NEED ASSISTANCE! Please prepare a two-column proof in a word processing document or on paper, using the guide to demonstrate that triangle RST is congruent to triangle RSQ, provided that RS is perpendicular to ST, RS is perpendicular to SQ, and ∠STR is congruent to ∠SQR. Hand in the complete proof to your teacher.

Given:
RS ⊥ ST
RS ⊥ SQ
∠STR ≅ ∠SQR

Prove:
△RST ≅ △RSQ

4 0
12 days ago
Read 2 more answers
Read the proof. Given: m∠H = 30°, m∠J = 50°, m∠P = 50°, m∠N = 100° Prove: △HKJ ~ △LNP Statement Reason 1. m∠H = 30°, m∠J = 50°,
zzz [4035]

Answer:

2. m\angle H+m\angle J +m\angle K =180^{\circ}

Reason: the total sum of all angles inside any triangle equals 180º.

Step-by-step explanation:

1) Organization

Statement 1. m∠H = 30°, m∠J = 50°, m∠P = 50°, m∠N = 100° 1. Reason: given

2) Given that the sum of all internal angles in any triangle is always 180º, similar to the formula. N represents the number of sides of a triangle:

S_{i}=180^{\circ}(n-2)\rightarrow 180(3-2) \therefore S_{i}=180^{\circ}

3) We can also state

m\angle K=180^{\circ}-(m\angle H+m\angle J)\\m\angle K=180^{\circ}-\left ( 30^{\circ}+50^{\circ} \right )\\m\angle K=100^{\circ}

Like in the other triangle:

m\angle L=180^{\circ}-(m\angle N+m\angle P)\\m\angle L=180^{\circ}-\left ( 100^{\circ}+50^{\circ} \right )\\m\angle L=30^{\circ}

4) Therefore,

2. m\angle H+m\angle J +m\angle K =180

Reason: The total of the internal angles is equal to 180º.

8 0
1 day ago
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