Answer:
Step-by-step explanation:
y=3x+6
slope is 3, so y=3x+[unknown].
We insert the point (4,7) into the equation.
7=3*4+[unknown]
7=12+[-5]
so the answer is
y=3x-5
x = 4/5 = 0.8
y = (4/x * x) + √x + 0.2 - 5x.
First, let's plug 0.8 in for x
y = (4/0.8 * 0.8) + √0.8 + 0.2 - 5(0.8)
(4/0.8 * 0.8) the 0.8s cancel out leaving just 4
y = 4 + √0.8 + 0.2 - 5(0.8)
5 * 0.8 = 4
y = 4 + √0.8 + 0.2 - 4
Add all the terms together
y = 1.09.
Answer:
x=9 and y=3
Step-by-step explanation:
Let's solve your system by substitution.
−4x+6y=−18 and y=−2x+21
Rewrite equations:
y=−2x+21;−4x+6y=−18
Step: Solve y=−2x+21for y:
y=−2x+21
Step: Substitute−2x+21foryin−4x+6y=−18:
−4x+6y=−18
−4x+6(−2x+21)=−18
−16x+126=−18(Simplify both sides of the equation)
−16x+126+−126=−18+−126(Add -126 to both sides)
−16x=−144
−16x
−16
=
−144
−16
(Divide both sides by -16)
x=9
Step: Substitute9forxiny=−2x+21:
y=−2x+21
y=(−2)(9)+21
y=3(Simplify both sides of the equation)
Answer:
x=9 and y=3
To solve this simply divide 4 by 3 and use the long division and do the same for 11 and 9, then compare the values.
The answer is D, it’s a lot to explain just trust me.