Answer: Look for key words.
Step-by-step explanation:
Example: 15 added and 24.
Added is the key word
24 + 15
Complementary angels add up to 90°
so x+18°=90°
so x=90-18=72°
Okay so for this one, we have to isolate our X.Lets start by moving the negative 5 on the other side of the equal sign. Remember to not mix a number that is with an X with a normal number (in this case it would be the -3x and the -5). So in putting our -5 on the other sign it becomes positive. Here’s what we have: x^2-3x=5. x^2 is the same thing as 2x.So now you have to minus 3x off of your 2x. This gives us -1x, but can just be put as -x. So now we have -x=5. You’re answer could either be 5 or -5 if you decided to divide it by -1 seeing as your -x is technically -1.
Answer: since 4mins->3math prob.
then 12/3=4 and 4x4=16
It will take him 16 minutes to solve 12 math problems
Step-by-step explanation:
Step-by-step explanation:
Q.282 +15% +750
<em><u>282 +15 </u></em><em><u>/</u></em><em><u>1</u></em><em><u>0</u></em><em><u>0</u></em><em><u>+750</u></em>
<em><u>2</u></em><em><u>8</u></em><em><u>2</u></em><em><u>+</u></em><em><u>3</u></em><em><u>/</u></em><em><u>2</u></em><em><u>0</u></em><em><u>+</u></em><em><u>7</u></em><em><u>5</u></em><em><u>0</u></em>
<em><u>1</u></em><em><u>0</u></em><em><u>3</u></em><em><u>2</u></em><em><u>+</u></em><em><u>3</u></em><em><u>/</u></em><em><u>2</u></em><em><u>0</u></em>
<em><u>2</u></em><em><u>0</u></em><em><u>6</u></em><em><u>4</u></em><em><u>3</u></em><em><u>/</u></em><em><u>2</u></em><em><u>0</u></em>