Tania has already saved $25.75. She needs at least $53.88 to buy a set of headphones. Write and solve an inequality that shows how much more she needs to earn to buy headphones.

$28.13

Step-by-step explanation:

$53.88 - $25.75 = $28.13

Check answer --> 28.13 + 25.75 = 53.88

the answer is 31.27mph

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.

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step-by-step explanation: