How can estimating be helpful before finding an actual product

Answers

Answer 1

Answer:

Estimating will be helpful before finding an actual product because when we complete estimating (like, addition, subtraction, multiplication, division) it's check the final answer which we find.

Here,

We have to find the way of estimating which can be helpful before finding an actual product.

What is Estimating before multiplication?

Estimating is a way of approximately calculating an answer to check its accuracy . You shouldn't need to use a calculator or any written methods when estimating, even with large numbers or decimal numbers.

Now,

Estimating will be helpful before finding an actual product because when we complete estimating (like, addition, subtraction, multiplication, division) it's check the final answer which we find.

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Answer 2

Answer: So you'll know if you estimated correctly, your answer should be about the same

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Tommy has a pet monkey. Every day, his monkey eats 4 apples in the morning. The monkey also eats two bananas for every banana that Tommy eats.Write an equation to describe this situation where x is the number of bananas Tommy eats and y is the total number of pieces of fruit the monkey eats.

Answers

If you would like to write an equation to describe the following situation, you can do this like this:

4 apples in the morning ... 4
x ... the number of bananas Tommy eats
2 bananas for every banana that Tommy eats ... 2 * x
y ... the total number of pieces of fruit the monkey eats

The equation would be as follows: y = 4 + 2 * x.

Describe and correct the error(s) made in each of the problems below. 1−x / (5−x)(−x)=x−1 / x(x−5)

5/s+2/5=2/s

Answers

Answer:

$\displaystyle (1-x)/((5-x)(-x)) =-(x-1 )/( x(x-5))$

$\displaystyle (5)/(s)* (2)/(5) =(2)/(s)$

Step-by-step explanation:

Errors in Algebraic Operations

It's usual that students make mistakes when misunderstanding the application of algebra's basic rules. Here we have two of them

When we change the signs of all the terms of a polynomial, the expression must be preceded by a negative sign
When multiplying negative and positive quantities, if the number of negatives is odd, the result is negative. If the number of negatives is even, the result is positive.
Not to confuse product of fractions with the sum of fractions. Rules are quite different

The first expression is

$1-x / (5-x)(-x)=x-1 / x(x-5)$

Let's arrange into format:

$\displaystyle (1-x)/((5-x)(-x)) =(x-1 )/( x(x-5))$

We can clearly see in all of the factors in the expression the signs were changed correctly, but the result should have been preceeded with a negative sign, because it makes 3 (odd number) negatives, resulting in a negative expression. The correct form is

$\displaystyle (1-x)/((5-x)(-x)) =-(x-1 )/( x(x-5))$

Now for the second expression

$5/s+2/5=2/s$

Let's arrange into format

$\displaystyle (5)/(s)+(2)/(5) =(2)/(s)$

It's a clear mistake because it was asssumed a product of fractions instead of a SUM of fractions. If the result was correct, then the expression should have been

$\displaystyle (5)/(s)* (2)/(5) =(2)/(s)$

What's a story problem for 3.05 dividied by 0.05

Answers

Mr. Smith is putting cookie pieces into equal containers for a science experiment. If there are 3.05 of the containers being used and each cookie piece is 0.05 then how many cookie pieces can fir into the select containers?

the radius of a music CD is 6 centimeters. what is the circumfrence of a CD to the nearest tenth? use 3.14 for. pi

Answers

The formula is 2*3.14*r

so 2*3.14*6=37.68

Stewart walks 2/3 mile each day. List three multiples of 2/3

Answers

The three multiples of 2/3 are 8/3, 4/3 and 6/3.

Given that Stewart walks 2/3 mile each day.

we need to list three multiples of 2/3

You can multiply 2/3 by several whole numbers to determine its multiples. Three 2/3 multiples are listed below:

(2/3) x 4 = 8/3

(2/3) x 2 = 4/3

(2/3) x 3 = 6/3

Simplifying the fractions, we get:

= 8/3 (which can also be expressed as 2 and 2/3)

= 4/3 (which can also be expressed as 1 1/3)

= 6/3 (which simplifies to 2)

Hence the three multiples of 2/3 are 8/3, 4/3 and 6/3.

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2/3 x 2 = 4/3 or 1 and 1/3
2/3 x 3 = 6/3 or 2
2/3 x 4 = 8/3 or 2 and 2/3

Seema used compatible numbers to estimate the product of (–25.31)(9.61). What was her estimate?–250
–240
240
250

Answers

If she used rounding properly, she would have gotten -25 x 10 = -250

Answer:

-250

Step-by-step explanation:

just did the test

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