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kompoz [17]
3 years ago
8

Ada is showing her work in simplifying (5.9 - 1.8) - 6.2 + 4.1. In which step did Ada make an error? (5 points)

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
5 0

Answer:

Step 4 is where she made the error.

Step-by-step explanation:

This step is actually known as the commutative property. That property states that we can change the order of numbers as long as we keep the signs and it maintains it's validity.

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Is the first one correct and what are the ages? Thanks
Fantom [35]

Answer:

a = 30°

Step-by-step explanation:

We need to find the value of a.

We know that, a straight line makes an angle of 180°.

In this case,

a+3a+2a = 180

6a = 180

a = 30°

So, the value of a is equal to 30°.

8 0
3 years ago
How can you Factor:ab^2-ab
NeTakaya

Answer:

ab(b−1)

Step-by-step explanation:

Factor ab out of  ab ^2 − ab

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A regular octagon has an apothem measuring 10 in. and a perimeter of 66.3 in. What is the area of the octagon, rounded to the ne
Lerok [7]

Answer:

332in^2

Step-by-step explanation:

The area of a regular polygon is calculated using the formula;

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It was given that, the apothem is, a=10in. and the perimeter is p=66.3 in.

We substitute into the formula to obtain;

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Area=331.5in^2

To the nearest square inch, we have;

Area=332in^2

4 0
3 years ago
Read 2 more answers
Which of these best describes the location of (2,-7) on a coordinate grid?
NISA [10]

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Step-by-step explanation:

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6 0
3 years ago
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How much money should a student place in a time deposit in a bank that pays 1.1% compounded annually so that he will have Php 20
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Let us say that:<span>
   P = present value
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P = 187293.65

<span>Therefore the student must put up Php 187,293.65</span></span>

5 0
3 years ago
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