SAT Math: October 2019 OFFICIAL TEST Calculator (In Real Time)
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- Опубликовано: 27 дек 2024
- Watch me tear through the entire Calculator section of the OFFICIAL Test from October 2019. I will be taking the test under timed conditions, which means you will learn how to approach and problem solve in real time as if you were taking the test. Join me for this power packed study session so you can boost your score in time for next week's SAT!
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For the question 28, there’s formula to calculate the area of an equilateral triangle which would make it easier:
Let’s use s for side and A for area
A = (√3s^2)/4
So s = 4
A = (√3 × 4^2)/4
A = (16√3)/4
A = 4√3
Since we have two triangles shaded we must multiply by 2:
4√3 × 2 = 8√3
So the answer is 8√3
For the question 19
When you are converting kilometers per hour to meters per second you can just divide the value per 3.6
90km/h ÷ 3.6 = 25m/s
And when converting meters per second to kilometers per hour, multiply the value by 3.6
25m/s × 3.6 = 90km/h
q no 29 how come do we add temperature of the room with temperature of the hot chocolate i dont understand
Goodluck to everyone.
Can u explain no. 34? I mean why didn't you add 1 to .2 which is equivalent to 1.2 and the equation would be like 1.15(1.2(3500)) but you did 1.15(.2(3500)). Can you kindly tell me how did u figure the equation??
It would mean a lot if you help me to understand the answer
Because it mentions his normal pay is 20% (0.2) of the retail value of merchandise he sells. Additionally it mentions that on top of his normal pay (100%) he can earn a 15% bonus which is equivalent to 1.15.
@@alexunstoppable7737 ^^^^^
do we have to fully understand standard deviation for psat or sat??
You just have to know that standard deviation measures the spread of data; more spread out, greater standard deviation.
@@ScalarLearning kk thx :D
king
Thank you!!
i took my first test and got -9 thats ab 700/800 , is that good? i made dumb mistakes and had 10 min left but was lazy to check them
i am confused in Q13. Why didn't we square the expressions?
You could square them and get the same results, just that it would take much more time
Can anyone explain Q38?
I think I got how to answer the question
well he did go the long way, but basically, for group A you could have done 5 x 9 since that 5 would have been taken by adding all the game number and dividing it by 9. this is similar to 7 x 11. so for this, 5 x 9 = 45 and 7 x 11 = 77 add those, you get 122 then divide that by 20 and you will get 6.1.
that's what I did since it was faster!