Eleanor scores 680 on the mathematics part of the sat. the distribution of sat math scores in recent years has been normal with mean 554 and standard deviation 106. gerald takes the act assessment mathematics test and scores 27. act math scores are normally distributed with mean 24.7 and standard deviation 3.2.
1. what is elanor's standardized score?
round to 2 decimal places.
2. what is gerald's standardized score?
round to 2 decimal places.
3. assuming that both tests measure the same kind of ability, who has the higher score?
a. gerald.
b. elanor.
c. they both did equally well.

Step-by-step explanation:

To compare Elanor's and Gerald's math scores, we need to standardize them and calculate their z-scores.

z score can be calculated using the formula

z= where

Elanor's standardized score is:

z(e) = ≈ 1.19

Gerald's standardized score is:

z(g)= ≈ 0.72

Since z(e) > z(g), Elanor has higher score

the solution is 12x-6y

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500