1935 people visit a library during one week. the ratio children : adult 1:4
How many more adults than children visited the library?

1161

Step-by-step explanation:

From the question, ww are told that 1935 people visit a library during one week and the ratio of children to adult is 1:4.

This means that the fraction of children is 1/5 qnd the fraction of adult is 4/5. Since there are 1935 people, the number of children will be:

= 1/5 × 1935

= 387

The number of adults will be:

= 4/5 × 1935

= 1548

To find the number of more adults than children that visited the library, we subtract 387 from 1548. This will be:

= 1548 - 387

= 1161

r and t.

both are 64 degrees.

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.