Step-by-step explanation:
note that
sin²x = (1-cos²x)
LHS= cos²x - 2 sin²x
= cos²x - 2(1-cos²x)
= cos²x - 2 + 2cos²x
= 3cos²x - 2
or
cos²x = (1-sin²x)
LHS= cos²x - 2 sin²x
=1-sin²x - 2 sin²x
= 1-3sin²x
Answer:
Step-by-step explanation:
1) true
2)3/4x-6= 12 = true
3) 8= -2x + 4 = false
4) x+5 = -3 = false
5) -3= 5-2x = true
If there are 4 trucks then the first truck weighs x
then x+2tons
then x+4tons
then x+6tons = 32tons
so 4x+12=32
-12 -12
/4 /4
x=5
so plug it back in
truck 1= 5tons or 10,000lbs
truck 2= 7tons or 14,000lbs
truck 3= 9tons or 18,000lbs
truck 4= 11tons or 22,000lbs
Answer:
2 ounces of clay is left in the bucket
Step-by-step explanation:
Total amount of clay in the bucket = 12 ounce
Ari used 1/6th of the clay in the bucket and Greg used 2/3 of the clay in the bucket
Hence, the remaining clay in the bucket
12 - 1/6 *12 - 2/3 * 12
12 - 2-8
2
Answer:
$16.75 + $2.20 = $18.95
$20 - $18.95 = $1.05
Step-by-step explanation:
Brainliest please
