Answer:
- 7y +3 =-25
-7y=-25—3
-7y=-28
-7y÷-7= -28÷-7
y=4
Step-by-step explanation:
Take +3 to the side so that your variable and a constant is on their own sides. When a number goes over the equals sign the sign changes at becomes the inverse that's why l said - 3. You now calculate - 25—3 equals 28 then divide by 7 to find y and your y is 4.
Answer:
4/5
Step-by-step explanation:
0.8 (to a fraction) 8/10
8/2=4
10/2=5
4/5
<em>θ</em> is given to be in the fourth quadrant (270° < <em>θ</em> < 360°) for which sin(<em>θ</em>) < 0 and cos(<em>θ</em>) > 0. This means
cos²(<em>θ</em>) + sin²(<em>θ</em>) = 1 ==> sin(<em>θ</em>) = -√[1 - cos²(<em>θ</em>)] = -3/5
Now recall the double angle identity for sine:
sin(2<em>θ</em>) = 2 sin(<em>θ</em>) cos(<em>θ</em>)
==> sin(2<em>θ</em>) = 2 (-3/5) (4/5) = -24/25
7/98 = 15/x so if you cross multiply and divide you get 15(98) divided by 7 which means x=86.47...
Answer:
A) 3x-5=25
I'll try my best on the others
B) x+y^2=18
C)x•6/5=x+4 ????
D).5+x=2-4???
That's all I know :/
Step-by-step explanation:
yeah I'm not sure lol