3 2/5 - 3/4

subtract

53/20

Step-by-step explanation:

First convert 3 2/5 into 17/5

Now we need a like denominator for both fractions

20 works

lets convert 17/5 into 68/20

and 3/4 can turn into 15/20

68/20 - 15/20

53/20

    53/20   or   2  13/20

Step-by-step explanation:

hope this helps

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: