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3 years ago

Estimation of 9.2 * 6.8

Mathematics

2 answers:

Stels [109]3 years ago

6 0

Step-by-step explanation:

62.56

stepan [7]3 years ago

5 0

9.2 * 6.8 = about 63

Since you are estimating, first round the numbers.

Change 9.2 to 9 and change 6.8 to 7. This leaves you with 9 * 7, which is 63, and since you are estimating, your answer doesn’t need to be exact.

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Which statements are true for verifying the solution set of

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3 years ago

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A ticket cost $4.80 the new ticket price will be 1.25 times the old price what will the new ticket be

xz_007 [3.2K]

Answer:

$6.

Step-by-step explanation:

Let x be the new price of ticket.

We have been given that a ticket cost $4.80. The new ticket price will be 1.25 times the old price.

We can represent this information as:

$x=1.25\times 4.80$

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3 years ago

On a test, Leo is asked to completely factor the polynomial 3x3 – 3x + 5x2 – 5. He uses double grouping to get (x2 – 1)(3x + 5).

Step2247 [10]

Answer:

Leo does not factored the polynomial completely.

3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Step-by-step explanation:

Given: On a test, Leo is asked to completely factor the polynomial

3x^3-3x+5x^2-5.

also, he uses double grouping to get (x^2- 1)(3x+5)

We have to explain whether he factored the polynomial completely or not.

Consider the given polynomial 3x^3-3x+5x^2-5.

after double grouping he get (x^2- 1)(3x+5)

Also, we can simplify further ,

Using algebraic identity a^2-b^2=(a+b)(a-b)

We get,

(x^2- 1)=(x+1)(x-1)

We get, (x^2- 1)(3x+5)=(x+1)(x-1)(3x+5)

Thus, 3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Thus, He does not factored the polynomial completely.

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3 years ago

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Artemon [7]

Answer:

168/(x² +7x)

Step-by-step explanation:

The height of each window is 14/(x+7), and the width of each window is 12/x. The area of each window is the product of its height ans width:

area = (14/(x+7))(12/x) = 168/(x(x +7))

area = 168/(x² +7x)

_____

<em>Comment on the problem</em>

There is not enough information given to determine suitable values for x. If x is 42, each window is a square 3 3/7 inches on a side.

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3 years ago

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ladessa [460]

Answer:

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Estimation of 9.2 * 6.8​

Estimation of 9.2 * 6.8