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3 years ago

Select the qualification that is best demonstrated in each example.

Mathematics

1 answer:

Simora [160]3 years ago

8 0

Answer:

I think your answers are right.

Step-by-step explanation:

hope this helps, have a good day :)

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What is the concentration of H+ ions at a pH = 2?

cestrela7 [59]

Answer:

0.01

0.000001

10,000

Step-by-step explanation:

i got it on edge

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2 years ago

Inverse operations add up, multiply, divided?

maxonik [38]

Answer:

Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7.

Another Example: Multiplication and division are inverse operations. Start with 6, multiply by 2 we get 12, now divide by 2 and we get back to 6.

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3 years ago

Rewrite each division problem as a multiplication problem and solve. 6.3 divided 0.9 equals what

Masteriza [31]

You can write both numbers as fractions:

$6.3=\dfrac{63}{10},\quad 0.9=\dfrac{9}{10}$

Dividing by a fraction is the same as multiplying by its inverse, so we have

$\dfrac{63}{10}\div \dfrac{9}{10}=\dfrac{63}{10}\cdot\dfrac{10}{9}$

We can cross-simplify the 10's and we have

$\dfrac{63}{10}\cdot\dfrac{10}{9}=\dfrac{63}{9}=7$

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3 years ago

Use the Associative Property of Addition to write an expression equivalent to r+ (h+t). r+ (h+t) = Enter your answer in the answ

svlad2 [7]

Answer:

Associative propertry of addition.

Step-by-step explanation:

The associative property of addition states that:

$a+(b+c) = (a+b)+c$

It states that we can add numbers regardless of the groups. The sum does not change irrespective of how the addends are grouped.

We are given the expression:

$r + (h + t)$

It can be written as:

$(r+h) + t$

It can also be written as:

$r + (h+t) = (r+t) + h = (h+t)+r = h + (t+r)$

Whatever maybe the arrangement of r, h and t, their sum will always be equal. We can regroup them in many ways but the sum remains the same.

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2 years ago

What is 4( indicie-2) divided by 4 indicie 3

Bond [772]

Answer: The first rule: am × an = am+n. 3. 3. The second rule: (am)n = amn. 3. 4. The third ... three a's at the bottom can be divided out, so we are now left with a4. 1 that is a4. The same answer is obtained by subtracting the indices, that is, 7 − 3=4.

Step-by-step explanation:

7 0

3 years ago

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