The answer that i got was 1/10
Answer: -28
Step-by-step explanation:
Answer: X=4
Step-by-step explanation:
Because the 90 angle is alternate exterior angle to the 21x+6. So they are equal to each other. It would be 90=21x+6. Then -6 to both sides to be 84=21x and 84/21 is 4. So X=4.
Answer:
3x + 15 = 8x
Step-by-step explanation:
"The sum" means addition. Three times a number is that place where we insert a variable for the number that we don't know. In this question the word "becomes" is what indicates the equals. Eight times the number doesn't give any reason for us to think its a different unknown number, so we use the same variable as at the beginning of the question.
Answer:
2
Step-by-step explanation:
First find out what tan45 means then what sin30 means so tan45=1 and sin30=0.5, 1/0.5=2