You can't solve for x. Y=mx+b is slope intercept form and is used to graph equations
Answer:
3 long sleeve ,5 t shirt
Step-by-step explanation:
4x+12y=56
x+y=8
multiply bottom equation by four
4x+12y=56
4x+4y=32
subtract the two equations
8y+24
divide both sides by eight
y=3
plug into original equation
x+3=8
simplify
x=5
Answer:
x=10
Step-by-step explanation:
group like terms
13x+5x+7x+8x+24+7+2+-3=360
33x+30=360
33×=360-30
33x=330
divide both sides by 33
x=10
Answer:
The relative speed of the passing car is 13 miles per hour.
Step-by-step explanation:
i hope i have been useful buddy.
good luck ♥️♥️♥️♥️♥️.
<h3>
Answer: -4/3</h3>
=============================================================
Explanation:
Let's square both sides and do a bit of algebra to get the following.
Now apply the pythagorean trig identity to determine cos(2x) based on this. You should find that cos(2x) = -7/25
This then means tan(2x) = sin(2x)/cos(2x) = 24/7.
From here, you'll use this trig identity
which is the same as solving
where w = tan(x)
Plug in tan(2x) = 24/7 and solve for w to get w = -4/3 or w = 3/4
So either tan(x) = -4/3 or tan(x) = 3/4.
If we were to numerically solve the original equation for x, then we'd get roughly x = 2.21; then notice how tan(2.21) = -1.345 approximately when your calculator is in radian mode.
Since tan(x) < 0 in this case, we go for tan(x) = -4/3