Which strategy would you use to find 2+8 explain how you decided

Answers

Answer 1

Answer:

In this problem we need to make the following addition:

2 + 8

According to this I would use the following strategy:

1. Break apart strategy:

This strategy consists in the decomposition or separation of numbers. In this way, we may break number 2 and 8 down to place value and add each, starting with the 8 or keep one number intact and only break second number down by place value and adding each place. Anyway, using this strategy we have:

2 + 8 = ?

Thus, 2 breaks into 1 plus 1 (1 + 1), 8 breaks into 4 plus 4 (4 + 4), so by associative property:

$(1+4)+(1+4) = 5+5=\boxed{10}$

2. Explain how I decided.

The strategy of breaking apart numbers is an easy way to find additions. This strategy is amazing to add larger numbers. Therefore, we may break larger numbers up into hundreds, tens, ones, then add them.

Answer 2

Answer: You would use the addition strategy.

This is because there is a plus sign, which signifies addition. So, 2 + 8 = 10. If there had been a minus sign (-), you would be subtracting. Additionally, if there was a multiplication (x) or division (/) sign, you would multiply or divide, respectively.

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How is it possible for two different inequalities to describe the same situation? Whatdoes it mean for two inequalities to be equivalent?

Answers

Answer:

two inequalities are the same, have the same answer, or mean the same thing

Step-by-step explanation:

Sorry if I am wrong because I probably am

If a set of inequalities are equivalent, it means that they all have exactly the same solution. All inequalities on there are equivalent because all have the same solution x<2! X<2 is equivalent to x<2, clearly hope this helps!

What is 22,119 rounded to the nearest hundred?

Answers

To round a number to the nearest hundred, you need to check the digit in the tenth position (the position right after the hundred position).
If the number in the tenth position is less than 5, then you convert all the digits after the hundred to zeros
If the number in the tenth position is equal to or greater than 5, then you will add one to the hundred and convert all digits after the hundred to zeros.

Applying this to the given number:
The number is: 22,119
The digit in the hundred position is: 1
we check the digit next to it (the tenth position): It is "1" which is less than 5
so, we just convert all digits after the hundred to zeros
Therefore, 22,119 to the nearest hundreds is 22,100

An equivalent expression for 9z+27

Answers

Answer:

=9(z+3)

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

First, you had to rewrite the problem down of 27=9*3

$9z+9*3$

Then, you can also factor it out by the common term of 9.

$=9(z+3)$

Hope this helps!

Thanks!

-Charlie

Final answer:

The equivalent expression for 9z+27 is 9(z+3). By factoring out the greatest common factor, we can simplify the expression and represent it in a different form. For example, if z=5, then the original expression 9z+27 is equal to 72, which is also the value of the equivalent expression 9(z+3).

Explanation:

The equivalent expression for 9z+27 is 9(z+3).

To find the equivalent expression, we can factor out the greatest common factor of the terms, which in this case is 9. We can rewrite the expression as 9(z+3), where z+3 represents the remaining terms after factoring out 9.

For example, if z=5, then the original expression 9z+27 becomes 9(5)+27 = 45+27 = 72, and the equivalent expression 9(z+3) also becomes 9(5+3) = 72.