Answer:
500 divided by 10 is 50
Step-by-step explanation:
think of it this way you divide anything that's in the hundreds with 10 all you have to do is take away a zero and that's your answer
Answer:
C
Step-by-step explanation:
y-3=5(x-2) (rearrange this to be in slope- intercept from) (add 3 to both sides)
y = 5(x-2) + 3 (distribute parentheses)
y = x(5) - 2(5) + 3
y = 5x -10 + 3
y = 5x - 7
recall that for a line with gradient m, the gradient of the perpendicular line will be - (1/m)
hence in our case, our gradient of the original line is 5, hence the gradient of the perpendicular line is -1/5
From the choices, the only one that is consistent with this is C
i.e choice C:
5y + x = 25
5y = -x + 25
y = -(1/5) x + 5 ===> gradient of -1/5
Answer:
Volume of Mixture A =90 ml
Volume of Mixture B =30 ml
Step-by-step explanation:
Let say, Mixture A + Mixture B = Mixture C
Volume of Mixture A is x
Volume of Mixture B is y
So, Volume of Mixture C is x+y = 120 ml
Now, Acid contain in Mixture A is 20% =0.2x
Acid contain in Mixture B is 80% =0.8y
Also, Acid contain in Mixture C is 35% =(0.35)(x+y) = 0.35×120=42
Now, we know that,
Acid contain of Mixture A + Acid contain of Mixture B=Acid contain of Mixture C
∴ 0.2x+0.8y=42
∴ 2x+8y=420
We get two linear equations
2x+8y=420 and x+y = 120
Solving above equation...
∴ x=120-y
Replacing x value in 2x+8y=420
∴ 2(120-y)+8y=420
∴ 240-2y+8y=420
∴ 6y=180
∴ y=30
Replacing y value in any equation
∴ x=120-y=120-30=90
∴ x=90
Thus,
Volume of Mixture A is x=90 ml
Volume of Mixture B is y=30 ml
Answer:
The standard form of the equation is -3x + y = -19
Step-by-step explanation:
To find the standard form, we first need to note that the slope will be 3 since parallel lines have the same slope. Then we can use point-slope form and manipulate into standard form.
y - y1 = m(x - x1)
y - 5 = 3(x - 8)
y - 5 = 3x - 24
-3x + y - 5 = -24
-3x + y = -19