Find the value of the following expressions when x= – 2 5X²+ 5x – 21

9

Step-by-step explanation:

5(4)+5(2)-21

=20+10-21

=9

for any of you who need the translation here it is

step-by-step explanation:

find the angular size of the equatorial radius of the earth, if the horizontal parallax of the sun

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

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