Shadow that is 24 meters long. How tall is the building?

Answer  

Find out the what is the height of the building.

To prove

Let us assume that the height of the tree be x .

Let us assume that the shadow of the tree be y .

x = ky

Where k is the constant of proportionality.

As given

A 21 meter tall tree near a building casts a shadow that is 24 meters long.

21 = k × 24

k = 0.875

Let us assume that the height of the building be u .

As given

The building casts a shadow that is 56 meters long.

put values in the  x = ky

u = 0.875 × 56

u = 49 cm

Therefore the  height of the building is 49 cm .

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

4 candies

step-by-step explanation:

7 x 28 = 196

200 - 196 = 4 candies remaining.