Step-by-step explanation:
The equations are,
7b + 2t = 1986 -----> 1
2b + 2t = 996 -----> 2
From 1,
2t = 1986 - 7b
Using 2t value in 2,
2b + 1986 - 7b = 996
-5b = 996-1986 = -990
Divide by -5,
b = $198
Use the value of b in 2t,
2t = 1986 - 7*198
2t = 1986 - 1386
2t = 600
Divide by 2,
t = $300
Answer: 34.25
Step-by-step explanation:
Lol. ..I just finished this one for another person
2 (n-2) = n - 5/2
108 divided by 72= $1.50 per bag
1.50 times 126= 84
84 minus 72= 12
then check work
84 times $1.50
This kind of exercise can be real drudgery. But it's almost all simple arithmetic, so better you than me. I'll do one of these for you, which will show you how to do the other one.
a). sin · cot / sec
You're supposed to know that [ cotangent = cosine/sine ]
and [ secant = 1/cosine ].
Then the problem becomes
sin · (cos/sin) / (1/cos) = cos²
Aw shucks, I might as well also set up 'b)' for you:
b). cos · csc / tan
You're supposed to know that [ cosecant = 1/sine ]
and [ tangent = sine/cosine ].
Then the problem becomes
cos · (1/sin) / (sin/cos) = (cos/sin)²
Now simply plug in the given values of cos A and sin A .
And may I compliment you on your nail care !