Cck12 net bookmarks A Amplify Curriculum
2-4: MathXL for School: Practice & Problem Solving (Edited)
Due 10/1
X 2.4.PS-10
Question Help
In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains
931 grams of copper. How many grams of zinc does it contain?
HD
It contains grams of zinc.
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8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.