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Greeley [361]
3 years ago
8

Estimate the following sum using front-end estimation. 48.1 + 29.7 + 11.8

Mathematics
1 answer:
Daniel [21]3 years ago
6 0
Rounding up when the decimal is above 5, Rounding down when the decimal is 5 and below

the answer you are looking for would be 48 + 30 + 12 = Approximately 80 estimate
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den301095 [7]

Answer:

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Step-by-step explanatio: look at the chart

3 0
2 years ago
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Select the polynomial that is a perfect square trinomial. 36x2 − 4x 16 16x2 − 8x 36 25x2 9x 4 4x2 20x 25.
Naya [18.7K]

The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.

The given polynomial is

a) 36x^2-4x+16

What is the form of perfect square polynomial?

(ax+b)^2

we solve this method by using perfect square method

add and subtract 1/9

36x^2-4x+16+\frac{1}{9}-\frac{1}{9}

factor 36

\frac{143}{9}+36(x^2-\frac{x}{9}+\frac{1}{324} )

Now complete the square

\frac{143}{9}+36(x^2-\frac{1}{18})^2

Therefore this is not perfect square trinomial.

Similarly for

b) 16x^2-8x+36

Complete square is,

16(x-\frac{1}{4})^2+35

This polynomial is also not perfect square trinomial.

c) 25x^2+9x+4\\

complete square is,

25(x+\frac{9}{50})^2+\frac{319}{100}

This polynomial is not perfect square trinomial.

d)4x^2+20x+25\\

complete square is,

(2x+5)^2

This polynomial is perfect square trinomial.

Therefore,

The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.

To learn more about perfect square trinomial visit:

brainly.com/question/1538726

3 0
2 years ago
1. Suppose you have 62 toothpicks and a bunch of rubber bands.
ehidna [41]

Base-ten units are used to represent numbers in blocks

<h3>How to represent the bundle of toothpicks</h3>

The bundle is given as:

Bundle = 62

Rewrite as:

Bundle = 60 + 2

Express 60 as a product

Bundle = 6 * 10 + 2

See attachment for the drawing that represents the bundle

<h3>Ways to interpret the 6 in 62</h3>

The 6 in 62 can be interpreted in the following ways

  • Way 1: 6 tens
  • Way 2: 60

Read more about base-ten units at:

brainly.com/question/12386995

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2 years ago
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LuckyWell [14K]

1__________________________________________________________________________                                                                                                                                                                                                                                      

4 0
3 years ago
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Jacob strode up 24 steps in 12 seconds to reach his apartment on the second floor. How many steps did he climb in 9.5 seconds?
shutvik [7]

Answer:

He climbed 19 steps

Step-by-step explanation:

Let steps climbed in 9.5 seconds = z

If           24 steps = 12 seconds

then:       z            = 9.5 seconds

Using criss cross method

24  x 9.5 = 12 x z

228 = 12 z

z = 228/12

z = 19 steps

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3 years ago
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