How do you solve 12.42 ÷ 4.6? I have a test tomorrow

Answers

Answer 1

Answer:

Answer:

Just keep dividing like what I did in this image.

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How are basic facts can help you find 10*20*30*40 mentally

Answers

When you do the multiplication you can notice that 10, 20, 30, 40 all have 0's at the end.

So that means 10 *20*30*40 = 1*2*3*4*10000 = 24*10000 = 240,000

John is 6 years older than Keisha. Together their ages equal four times Keisha's age. How old is each?

Answers

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Age of John = m

Age of Keisha = n

m = 6 + n

m + n = 4n

m = 9

n = 3

The age of John is 9

The age of Keisha is 3

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Let the age of John = m

Let the age of Keisha = n

Now,

John is 6 yearsolder than Keisha.

This means,

m = 6 + n _____(1)

Together their ages equal fourtimesKeisha's age.

This means,

m + n = 4n _____(2)

From (1) and (2) we get,

6 + n + n = 4n

6 + 2n = 4n

6 = 4n - 2n

6 = 2n

n = 3

Now,

m = 6 + n

m = 6 + 3

m = 9

Thus,

The age of John is 9

The age of Keisha is 3

Learn more about expressions here:

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J = K+6
K + J = 4K

Replace J in the second equation
K + (K + 6) = 4K
K + K + 6 = 4K
2K + 6 = 4K
Subtract 2K from each side
6 = 2K
Divide both sides by 2
K=3

So, Keisha is 3 and therefore John is 9 because 3 + 6=9

What fraction of an hour is 45 minutes

Answers

3/4 is the fraction. because is 3 times 15 min and there are 4 15 min.

the answer of what fraction of an hour is 45 minutes is three fourths

Given the arithmetic sequence an = −4 + 4(n − 1), what is the domain for n? (1 point)

Answers

Answer:

The correct answer is C. All integers where n ≥ 1

Final answer:

The domain for n in the given arithmetic sequence is the set of positive integers.

Explanation:

The domain of the arithmetic sequence an = −4 + 4(n − 1) is the set of all possible values for n. In this case, since n represents the position in the sequence, it can only take on positive integer values starting from 1. Therefore, the domain for n is the set of all positive integers: {1, 2, 3, 4, ...}.

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The difference between the water levels for high and low tide was 3.6 feet. The low is .2 foot. Write an equation to find the water level at high tide.