Which numbers are a distance of 1.6 units from 3 on this number. line

1.4 and 4.6

Step-by-step explanation:

In the number line there are two numbers possible which are at same distance from a number.

One number is greater than the number while the second number is less than the number.

Let a and b are the numbers which are 1.6 unit far from 3,

Where, a > 3 and b < 3

∵ Distance from 3 to a = a - 3

While the distance from 3 to b = 3 - b

According to the question,

a - 3 = 1.6 and 3 - b = 1.6

a = 4.6 and b = 3 - 1.6 = 1.4

Hence, 4.6 and 1.4 are 1.6 unit far from 3.

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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