Answer:
B' (2, 5 )
Step-by-step explanation:
Under a counterclockwise rotation about the origin of 270°
a point (x, y ) → (y, - x ) , then
B(- 5, 2 ) → B' (2, 5 )
Step-by-step explanation:
- y=(4×2)+5
y=8+5
<u>Y=1</u><u>3</u>
2. 4=4x+5
4x=4-5
<u>4</u><u>x</u>= <u>-1</u>
4. 4
x= <u>-1</u>
4
Answer:
ima probably fail I've been on this app just to get my grades up
Step-by-step explanation:
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There's enough arithmetic involved in this that it is convenient to let a machine solver of some sort figure it out. Most graphing or scientific calculators will work this problem for you (consult the manual for yours). If you insist on doing it by hand, you must compute several average values:
• a1 = the average of sleep hours (h)
• a2 = the average of test scores (%)
• a3 = the average of the product of sleep hours and test scores (h×%)
• a4 = the average of the square of sleep hours (h×h)
a) The equation of your best-fit (least-squared-error) line is then
% = (a3 - (a1×a2))/(a4 - (a1)²)×(h - a1) + a2In numbers, this is
% = 6.33333h + 38.6875b) For h=8, the equation gives
6.33333×8 + 38.6875 ≈
89.4
Answer:
-8
Step-by-step explanation:
2/3(-7)+2/3(-5) = -8