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borishaifa [10]
2 years ago
8

How to solve it don't understand a thing

Mathematics
1 answer:
sashaice [31]2 years ago
5 0

Answer:

1) 40ft^2

2)320mm^2

3) 96m^2

Step-by-step explanation:

first one

find the area of the bigger rectangle (80)

find the area of the inner rectangle (40)

subtract the bigger one from the smaller one(80-40=40)

shaded area is 40ft^2

second one

find the area as if it were a rectangle(720 cm)

find the area of the inner(400cm)

subtract the bigger from the smaller(720-400=320)

answer: 320mm^2

third

find area of the big square(196)

find area of one tiny unshaded square(25)

since all are the same 25x4 is 100

196-100=96

answer;96m^2

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Plums are 6 for $1.50, and a sign by the apples that are 5 for $3.00. What is the total cost of buying 2 plums and 2 apples?
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Answer:

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Step-by-step explanation:

If 6 plums are $1.50 you would divide $1.50 by 6 to get the unit cost, $.25. Then you do the same thing for the apples. $3.00 divided by the 5 apples is $.60. Now you need to multiply both unit costs by 2 then add them together to get $1.70

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Answer:

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Step-by-step explanation:

A rectangular prism is a polyhedron with six rectangular faces. The volume of a prism is given by:

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