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2 years ago

Danny charges $35 for 3hrs of swimming lessons. Martin charges $24 for 2hrs is swimming lessons. Who offers a better deal?

Mathematics

2 answers:

Alexeev081 [22]2 years ago

4 0

The better deal is danny

ExtremeBDS [4]2 years ago

4 0

Since Danny charges $35 for 3 hours of lessons, his hourly rate is 35/3 = $11.67. Since Martin charges $24 for 2 hours of lessons, his hourly rate is 24/2 = $12. Danny has the lower hourly rate, so he is offering the better deal.

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Svet_ta [14]

Answer:

y = 2

Step-by-step explanation:

x + 5y - 10 = 0

X = 4y - 8

since x is given as = 4y - 8 we can use this in first equation

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Answer:

Step-by-step explanation:

its not right equation

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3 years ago

The length of each side of a square was decreased by 2 inches, so the perimeter is now 52 inches. What was the original length o

telo118 [61]

60 inches because the square has 4 sides so 4x2 is 8 and 52+8 is 60.

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2 years ago

Question:

aivan3 [116]

Answer:

part A) The scale factor of the sides (small to large) is 1/2

part B) Te ratio of the areas (small to large) is 1/4

part C) see the explanation

Step-by-step explanation:

Part A) Determine the scale factor of the sides (small to large).

we know that

The dilation is a non rigid transformation that produce similar figures

If two figures are similar, then the ratio of its corresponding sides is proportional

Let

z ----> the scale factor

$\frac{CB}{C'B'}=\frac{CD}{C'D'}=\frac{BD}{B'D'}$

The scale factor is equal to

$z=\frac{CB}{C'B'}$

substitute

$z=\frac{4}{8}$

simplify

$z=\frac{1}{2}$

Part B) What is the ratio of the areas (small to large)?

Area of the small triangle

$A=\frac{1}{2}(2)(4)=4\ units^2$

Area of the large triangle

$A=\frac{1}{2}(4)(8)=16\ units^2$

ratio of the areas (small to large)

$ratio=\frac{4}{16}=\frac{1}{4}$

Part C) Write a generalization about the ratio of the sides and the ratio of the areas of similar figures

In similar figures the ratio of its corresponding sides is proportional and this ratio is called the scale factor

In similar figures the ratio of its areas is equal to the scale factor squared

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3 years ago

It took Sergio 1.5 hours to read 3 chapters of a book. If he continues reading at a constant rate and the chapters are similar i

ryzh [129]

Answer:

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2 years ago