Answer:
x < 21.9
Step-by-step explanation:
Just follow the same rules as if you were solving for x
<u>14.2 + 15.5</u> + x < 51.6 = Combine like terms
<u>29.7</u> + x < 51.6 = Subtract 29.7 to isolate x
x < 21.9
Answer:
is the same as by co-function identities
Step-by-step explanation:
Remember that complementary angles add up to 90°. The angle that i s complementary to 63° is 27°.
Also recall the co-function identities:
- sin (90° – x) = cos x
- cos (90° – x) = sin x
This means that .
Answer:
(-2,8)
Step-by-step explanation:
-7x-2y = -2
-6x+8y = 76
Multiply the first equation by 4 to eliminate y
-28x -8y = -8
Then add it to the second equation
-28x -8y = -8
-6x+8y = 76
--------------------
-34x = 68
Divide by -34
-34x/-34 = 68/-34
x = -2
Now substitute back into one of the equations to find y
-6x +8y = 76
-6(-2) +8y = 76
12+8y = 76
Subtract 12 from each side
12+8y-12 = 76-12
8y = 64
Divide each side by 8
8y/8 = 64/6
y=8
(-2,8)