It was -8°F in the morning. The temperature increased throughout the day, and in the afternoon, it was 11°F. How much did the temperature change?

19

Step-by-step explanation

This is simple

I will teach you a simple technique

Count them, don't count the -8

-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

You are just subtracting, but instead counting.

I said not to count -8, because normally in subtraction, we normally don't count the number we are subracting.

for example

8 - 7 = 1

so counting technique

8 - 7, 6, 5, 4, 3, 2, 1

there are 7 numbers, if i didn't count the 8

so it is right.

hope you understand :-)

c) yes, because of asa or aas

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )