Please answer. Thanksss

No, No, Yes, Yes

Step-by-step explanation:

We can simply substitute the pairs as x and y in the equation:

(5, 0)

7*5 + 5*0 = 35 + 0 = 35

(-4, -3)

7*(-4) + 5*(-3) = -28 - 15 = -43

(2, -1)

7*2 + 5*(-1) = 14 - 5 = 9

(-3, 6)

7*(-3) + 5*6 = -21 + 30 = 9

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: