A toy train and a real train are similar shapes, then their dimensions are proportional. The ratio is $\dfrac{real}{toy} =\dfrac{75}{6} =\dfrac{25}{2}$ .

Find ratios in all options:

A. $\dfrac{real}{toy} =\dfrac{12.5}{12} =\dfrac{25}{24}$ (incorrect).

B. $\dfrac{real}{toy} =\dfrac{50}{9}$ (incorrect).

C. $\dfrac{real}{toy} =\dfrac{37.5}{3} =\dfrac{125}{10} =\dfrac{25}{2}$ (correct).

D. $\dfrac{real}{toy} =\dfrac{50}{4} =\dfrac{25}{2}$ (correct).

Answer: correct choices are C and D.

4 0

3 years ago

Una familia ha consumido en un día de verano: dos botellas de litro y medio de agua, 5 botellas de 1/4 de litro de jugo de manza

Natalija [7]

Answer:

La familia bebió:

2 botellas de 1.5 L = 2*1.5L = 3L

5 botellas de 1/4 de litro = 5*(1/4 L) = 5/4 L

4 botellas de 1/4 de litro = 4*(1/4 L) = 1 L

Sumando eso, tenemos:

3 L + (5/4) L + 1L = 4L + 5/4 L = (16/4) L + 5/4 L = (21/4) L.

21/4 Litros tomaron en total.

¿podemos directamente sumar y restar fracciones de distintos denominadores?

No, tenemos que tener el mismo denominador para sumar o restar.

5 0

2 years ago

A student spends the same amount each week for bus fare in 5 weeks he spends 115 which equation shows his relationship let's= nu

Damm [24]

Let c represent the cost of bus fare per week

5c = $115

c = $25

The student spends $25 per week for bus fare so the rate is $25

The equation to determine the total cost for "x" number of weeks is:

y = $25x

4 0

3 years ago

Alenkasestr [34]

Answer:

15,20,25

Step-by-step explanation:

The ratio of the sides is 3:4:5

So 3x + 4x + 5x = 60

12x = 60

x = 60/12

x = 5

The sides are therefore

3x = 3*5 = 15

4x = 4*5 = 20

5x =<u> 5*4 = 25</u>

Total 60 just what it should be

8 0

3 years ago