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Anna71 [15]
2 years ago
14

Elias’s teacher has given him a rectangle that is 15 feet by 20 feet. She has asked him to create a new rectangle using a scale

factor of 8/3. Elias says that will be a reduction because the scale factor is a fraction. Is he correct? Explain.
Mathematics
2 answers:
Dafna11 [192]2 years ago
5 0

Answer:

Elias is not correct. The new rectangle will be an enlargement because the scale factor is greater than 1. To be a reduction, the scale factor must be between 0 and 1.



marin [14]2 years ago
3 0
No. he isn't correct because the scale factor is an improper fraction. 2/5 means you have 2 out of 5, but if you have 8 out of 3, that means you have 2 3s and 2 more leftover. it wouldn't be a reduction, it'd be increasing!
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Maya can run 18 miles in 3 hours, and she can bike 18 miles in 2 hours.
polet [3.4K]

Answer:

36 miles

Step-by-step explanation:

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27 + 9= 36 total miles

4 0
2 years ago
The cost for traveling in tina's taxi is 9 pence per 100m
lora16 [44]

Answer:

1405.8 pence fare

Step-by-step explanation:

First we have to change meters into km by dividing the distance by 1000

here we have:

Fare: 9 pence

Distance: 100m/1000 = 0.1 km

when it was

0.1 km -----------> 9 pence fare

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if 15.62 ------------> 9*15.62/0.1

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2 years ago
In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled a
UNO [17]

Answer:

T = - 7.5 Cos π/12( t - 4 ) + 10.5

Step-by-step explanation:

Given that the

Maximum temp. = 18 degree Celsius

Minimum temp. = 3 degree Celsius

The half way between 10 am and 10 pm is 4 am

The sine and cosine functions can be used to model fluctuations  in temperature data through out the year. An equation that can be used to model these data is of the form:

T = A cos B(t - C) + D, where A,B,C,D, are constants, T is the  temperature in °C and t is the hour (1–24)

A = amplitude = (Tmax - Tmin)/2

A = (3 - 18)/2 = - 15/2 = -7.5 ( note : after midnight)

B = 2π/24 = π/12

C = units translated to the right

C = 4

D = ymin + amplitude = units translated up

D = 7.5 + 3 = 10.5

The formula of the trigonometric function that models the temperature T in Johannesburg t hours after midnight we be

T = - 7.5 Cos π/12( t - 4 ) + 10.5

3 0
2 years ago
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serg [7]

Answer:

Distance = 58\ feet

Step-by-step explanation:

Represent the lure's difference with A and B;

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B = 81\ feet

Required

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Distance = B - A

Substitute 23 feet for A and 81 feet for B

Distance = 81\ feet - 23\ feet

Distance = 58\ feet

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Answer:

d

Step-by-step explanation:

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3 years ago
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