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svlad2 [7]
3 years ago
11

There are 630 dishes that need to be rinsed. manuel can rinse them in 105 minutes by himself. it will take his friend carlos 70

minutes to rinse these dishes. how long will it take them if they rinse these 630 dishes together?
Mathematics
1 answer:
QveST [7]3 years ago
7 0
630/105=6 minutes per dish

630/70=9 minutes per dish

15 minutes:2 dishes

630/15=42

It will take them 42 minutes to rinse 630 dishes together.

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A 39-foot piece of string (hypotenuse) is stretched from the top of a 18-foot flagpole to the ground. How far is the base of the
ivann1987 [24]

9514 1404 393

Answer:

  34.6 ft

Step-by-step explanation:

The distance can be found using the Pythagorean theorem. Where a, b, c are the sides of a right triangle with c as the hypotenuse, it tells you ...

  a² + b² = c²

  a = √(c² -b²)

  base-to-string = √(39² -18²) = √1197 ≈ 34.598

The distance from the base of the pole to the end of the string is about 34.6 feet.

7 0
2 years ago
Calculamos el volumen (V) de un prisma cuadrangular expresado en unidades cúbicas. Respondemos: ¿cómo se calcula?...............
Vadim26 [7]

Answer:

a) El procedimiento queda resumido en lo que sigue:

1) Se halla el área de la base del cuadrilátero.

2) Se multiplica el resultado anterior por la longitud del prisma.

b) La expresión para calcular el volumen del prisma (V), en unidades cúbicas, es:

V = w\cdot h \cdot l

Donde:

w - Ancho de la base, en unidades.

h - Altura de la base, en unidades.

l - Longitud del prisma, en unidades.

Step-by-step explanation:

a) Dimensionalmente hablando, la unidad de volumen es igual al cubo de la unidad de longitud. Se explica a continuación los pasos necesarios para el cálculo de prisma cuadrangular:

1) Se halla el área de la base del cuadrilátero.

2) Se multiplica el resultado anterior por la longitud del prisma.

b) En consecuencia, se deriva la expresión para el volumen del prisma:

V = A\cdot l (1)

Donde:

A - Área de la base del prisma, en unidades cuadradas.

l - Longitud del prisma, en unidades.

V = w\cdot h \cdot l (2)

Donde:

w - Ancho de la base, en unidades.

h - Altura de la base, en unidades.

5 0
3 years ago
Jennifer 4 years older than her sister, Rebecca. Their ages sum to 28. How old are each of the sisters?
Musya8 [376]

Answer:

Rebecca is 12

Jennifer is 16

Step-by-step explanation:

28 - 4 = 24

24 : 2 = 12

12 + 4 = 16 (Jennifer)

28 - 16 = 12 (Rebecca)

8 0
3 years ago
Which one of the following four hairdryers can you use on a 120-V line? The safety fuse allows a maximum current of 10 A. a) Hai
blsea [12.9K]

Answer:it his hi

Step-by-step explanation:

4 0
2 years ago
Any idea help me ASAP:)
Arada [10]

Answer:

The x-intercept is (18/5, 0).

The y-intercept is (0,-2).

Step-by-step explanation:

To find the <u>x-intercept</u>, sub y for 0.

-5x + 9y = -18

-5x + 9(0) = -18

Simplify and isolate x.

-5x = -18  <= Divide both sides by -5

x = 18/5

Since we substituted y for 0, y=0.

(18/5, 0)

To find the <u>y-intercept</u>, sub x for 0.

-5x + 9y = -18

-5(0) + 9y = -18

Simplify and isolate y.

9y = -18  <= Divide both sides by 9

y = -2

Since we substituted x for 0, x=0.

(0,-2)

5 0
3 years ago
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