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Zanzabum
3 years ago
5

Alicia buys a 5- pounds bag of rocks for a fish tank. She uses 1 1/8 pounds for a small fish bowl. How much is left?

Mathematics
1 answer:
Alex73 [517]3 years ago
7 0
5 subtract 1 and one eighth is 3 and seven eighths 
3 7/8
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The rectangular model is made up of squares. Each square is of equal size.
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What is a system of equations for the following situation? A group of 12 people went to see a movie. The cost to go to the movie
Anna11 [10]

First define the variables:

c = amount of children

a = amount of adults

Next create the equations to satisfy the conditions:

1) Total group is 12 people:

c+a=12

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6c+10a=100

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What is it !, help !
Gala2k [10]

Answer:

an isosceles triangle

Step-by-step explanation:

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7 0
3 years ago
A parabola can be drawn given a focus of (5, -3) and a directrix of y=1. Write the equation of the parabola in any form.
Anna71 [15]

Answer:

(x²-10x+33)/(-8) = y

Step-by-step explanation:

The distance between any point on a parabola from both its focus and directrix are the same.

Let's say we have a point (x,y) on the parabola. We can then say that using the distance formula,

\sqrt{(x-5)^2+(y-(-3))^2}is the distance between (x,y) and the focus. Similarly, the distance between (x,y) and the directrix is |y-1| (I use absolute value here because distance is always positive). We can find this equation by taking the shortest distance from the point to the line. Because the closest point to the line will be the same x value as the point itself, the distance is simply the distance between the y value of the point and the y value of the directrix.

Equating the two equations given, we have

\sqrt{(x-5)^2+(y-(-3))^2} = |y-1|

square both sides to get

(x-5)²+(y+3)²=(y-1)²

expand the y components

(x-5)² + y²+6y+9 = y²-2y+1

subtract y²+6y+9 from both sides

(x-5)² = -8y - 8

expand the x components

x²-10x+25 = -8y - 8

add 8 to both sides to isolate the -8y

x²-10x+33 = -8y

divide both sides by -8 to isolate y

(x²-10x+33)/(-8) = y

6 0
2 years ago
Given A(-2, 5) and B(13, -7), find the midpoint of AB.​
Dmitrij [34]

Answer:

The mid-point is (9,-9/2)

Step-by-step explanation:

You would use the mid-point formula for this

(\frac{x_{2} +x_{1} }{2} , \frac{y_{2}+y_{1}  }{2} )

if you plug that in it is (\frac{13-2}{2}, \frac{-7+5}{2})

resulting in (11/2,-2/2) = (11/2,-1)

4 0
1 year ago
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