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NeX [460]
3 years ago
9

What is the final amount if 457 is decreased by 1% followed by a further 3% decrease? Give your answer rounded to 2 DP.

Mathematics
1 answer:
kaheart [24]3 years ago
4 0

Answer:

438.86

Step-by-step explanation:

1. 457 x 0.99 = 452.43 - Decreased by 1%

2. We need to decrease 452.43 again but this time by 3% - 452.43 x 0.97

3. This gives us an answer of 438.8571

4. Finally we need to round this to 2DP, the 7 (438.8571) rounds up so the number to the left increases. This leaves an answer of 438.86

Hope this helps :D

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the length of a rectangular picture frame is 3 centimeters less than twice the width. the perimeter is 78 centimeters. find the
Natalka [10]
Let the width be x
width = x
length = 2x - 3

Perimeter = x + 2x - 3 + x + 2x - 3 = 6x - 6 

6x - 6 = 78
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The width is 14cm and the length is 25cm 
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~Please help as soon as possible~
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Question 1

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Question 2

600 pretzels/10 minutes
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7 0
3 years ago
you are working on a project for school. the project will take 12 hours to finish in all. so far, you have worked on the project
nasty-shy [4]

Answer:

6 hours and 45 minutes

Step-by-step explanation:

First, convert 12 hours into minutes.

12*60=720

Convert 5 hours to minutes and add 15

5*60=300+15=315

Subtract 720 from 315.

720-315=405

Convert into hours and minutes.

405/60=6.75

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7 0
3 years ago
Write a formula to describe the sequence
Dominik [7]

Answer:

d

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A(n) = 1 - 0.1(n-1)

A(1) = 1- 0.1*(1-1) = 1 - 0.1*0 = 1

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Method:

A(1)=1

D = A(2)-A(1) = 0.9 - 1 = -0.1

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     = 1 - 0.1(n -1)

     

8 0
3 years ago
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