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Fantom [35]
4 years ago
12

Please help. Pm me if you have the answers

Mathematics
1 answer:
Pepsi [2]4 years ago
7 0
1. 1,450:24. Then simplify: 725:12 or D.

2. 3:1.8 is the answer :)
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Sue purchased a dress that was marked 25% off. She paid $60 for the dress. What was the original price? I know it is $80, but ho
Alborosie
25% = 0.25

let x represent the original cost of the dress

x - 0.25x = 60

combine like terms

0.75x = 60

divide both sides by 0.75

x = 80
3 0
4 years ago
Read 2 more answers
La fuerza necesaria para evitar que un auto derrape en una curva varía inversamente al radio de la curva y conjuntamente con el
Vika [28.1K]

Answer:

768 libras de fuerza

Step-by-step explanation:

Tenemos que encontrar la ecuación que los relacione.

F = Fuerza necesaria para evitar que el automóvil patine

r = radio de la curva

w = peso del coche

s = velocidad de los coches

En la pregunta se nos dice:

La fuerza requerida para evitar que un automóvil patine alrededor de una curva varía inversamente con el radio de la curva.

F ∝ 1 / r

Y luego con el peso del auto

F ∝ w

Y el cuadrado de la velocidad del coche

F ∝ s²

Combinando las tres variaciones juntas,

F ∝ 1 / r ∝ w ∝ s²

k = constante de proporcionalidad, por tanto:

F = k × w × s² / r

F = kws² / r

Paso 1

Encuentra k

En la pregunta, se nos dice:

Suponga que 400 libras de fuerza evitan que un automóvil de 1600 libras patine alrededor de una curva con un radio de 800 si viaja a 50 mph.

F = 400 libras

w = 1600 libras

r = 800

s = 50 mph

Tenga en cuenta que desde el

F = kws² / r

400 = k × 1600 × 50² / 800

400 = k × 5000

k = 400/5000

k = 2/25

Paso 2

¿Cuánta fuerza evitaría que el mismo automóvil patinara en una curva con un radio de 600 si viaja a 60 mph?

F = ?? libras

w = ya que es el mismo carro = 1600 libras

r = 600

s = 60 mph

F = kws² / r

k = 2/25

F = 2/25 × 1600 × 60² / 600

F = 768 libras

Por lo tanto, la cantidad de fuerza que evitaría que el mismo automóvil patine en una curva con un radio de 600 si viaja a 60 mph es de 768 libras.

7 0
4 years ago
The mean temperature for the first 7 days in January was 1 °C.
Gekata [30.6K]
1degrees because in mean you have to add all the numbers up then you divided so what you have to do is 1 degrees add 7 degrees which is for the first 8 days you divide which gives you 1 degrees Celsius
3 0
4 years ago
The quadrilateral is a trapezoid. What is the value of x?
nalin [4]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
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Which function describes this graph f(x)=4x+2 ??? Anybody please help ?
Korolek [52]

Answer:

Step-by-step explanation:

f(x)=4x+2 is the equation of a straight line with slope 4 and y-intercept 2.

8 0
3 years ago
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