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3 years ago

Write four sentences about the number 9

Mathematics

1 answer:

butalik [34]3 years ago

6 0

Answer:

Uh, the number 9 is an odd number. The number 9 is a composite number. The number 9 is a natural number. The number 9 is the sum of the first three consecutive odd numbers which are 1, 3, and 5.

Step-by-step explanation:

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Divide 28 cans of soda into two groups so the ratio is 3 to 4.

Debora [2.8K]

Answer:
The first group would have 12 cans
The second group would have 16 cans

Explanation:
We know that the total number of cans in 28 and that the ratio between the two groups is 3:4

This means that:
If the first group has 3x cans, then the second group would have 4x cans.

Now, we would solve for x:
3x + 4x = 28
7x = 28
x = $\frac{28}{7}$ 
x = 4 cans

Therefore:
The first group would have 3x = 3(4) = 12 cans
The second group would have 4x = 4(4) = 16 cans

Hope this helps :)

5 0

4 years ago

What is 9/12 + 6/7 ?

zaharov [31]

The answer is 1.6 because you take 9 and divide it by 7 then add it to 6 divided by 7

4 0

3 years ago

Read 2 more answers

Use the definition of the derivative as a limit to find the derivative f′ where f(x)= √ x+2.

MA_775_DIABLO [31]

Step-by-step explanation:

If the equation is

$\sqrt{x + 2}$

Then, here is the answer.

The definition of a derivative is

$\frac{f(x + h) - f(x)}{h}$

Also note that we want h to be a small, negligible value so we let h be a value that is infinitesimal small.

So we get

$\frac{ \sqrt{x + h + 2} - \sqrt{x + 2} }{h}$

Multiply both equations by the conjugate.

$\frac{ \sqrt{x + h + 2} - \sqrt{x + 2} }{h} \times \frac{ \sqrt{x + h + 2} + \sqrt{x + 2} }{ \sqrt{x + h + 2} + \sqrt{x + 2} } = \frac{x + h + 2 - (x + 2)}{h \sqrt{x + h + 2} + \sqrt{x + 2} }$

$\frac{h}{h \sqrt{x + h + 2} + \sqrt{x + 2} }$

$\frac{1}{ \sqrt{x + h + 2} + \sqrt{x + 2} }$

Since h is very small, get rid of h.

$\frac{1}{ \sqrt{x + 2} + \sqrt{x + 2} }$

$\frac{1}{2 \sqrt{x + 2} }$

So the derivative of

$\frac{d}{dx} ( \sqrt{x + 2} ) = \frac{1}{2 \sqrt{x + 2} }$

Part 2: If your function is

$\sqrt{x} + 2$

Then we get

$\frac{ \sqrt{x + h} + 2 - ( \sqrt{x} + 2) }{h}$

$\frac{ \sqrt{x + h} - \sqrt{x} }{h}$

$\frac{x + h - x}{h( \sqrt{x + h} + \sqrt{x}) }$

$\frac{h}{h( \sqrt{x + h} + \sqrt{x} ) }$

$\frac{1}{ \sqrt{x + h} + \sqrt{x} }$

$\frac{1}{2 \sqrt{x} }$

$\frac{d}{dx} ( \sqrt{x} + 2) = \frac{1}{2 \sqrt{x} }$

3 0

3 years ago

4/5 = % its blank at the %

Goryan [66]

Answer:

Step-by-step explanation:

4/5 = 0.8 whitch = 80

5 0

3 years ago

Simplify negative 15.5 divided by 5. and pls tell me how to simplify and give a step by step explanation thanks!

geniusboy [140]

Answer:

The answer is -3.1, or 3 1/10.Since diving a negative and a positive equals a negative, your quotient will be negative. You can start by removing the 0.5, and divide 15 by 5 which is 3. Then with the 0.5 from -15.5, divide it by 5 and you get 0.1. 3 plus 0.1 is 3.1, and since it has to be negative, it's -3.1.

Step-by-step explanation:

i tried, have a nice day (:

3 0

4 years ago