19=9-16 would probably be something to go off of and begin your thought process with.
Answer:
See below (I hope this helps!)
Step-by-step explanation:
Because odd numbers are always 1 greater than even numbers, we can call the two odd numbers x + 1 and y + 1 where x and y are even integers. Multiplying the two gives us:
(x + 1) * (y + 1)
= x * y + x * 1 + 1 * y + 1 * 1
= xy + x + y + 1
We know that x * y will be even because x and y are also even and the sum of two even numbers will be even, and we also know that x and y are even and that 1 is odd. Since the sum of even and odd numbers is always odd, the product of any two numbers is always odd.
*NOTE: I put a limitation on x and y in my proof (the limitation was that x and y must be EVEN integers) but you don't have to do that, you could make the odd integers 2x + 1 and 2y + 1 where x and y could be any integer from the set Z like mirai123 did. I simply gave this proof because it was the first thing that came to mind. While mirai123's proof and mine are different, they are still both correct.
Answer:
63
Step-by-step explanation:
Step 1: Define
f(x) = -x - 12
f(-5) is x = -5
f(-3) is x = -3
Step 2: Find f(-5)
f(-5) = -(-5) - 12
f(-5) = 5 - 12
f(-5) = -7
Step 3: Find f(-3)
f(-3) = -(-3) - 12
f(-3) = 3 - 12
f(-3) = -9
Step 4: Find f(-5) × f(-3)
-7 × -9
63
The density of the wooden block is 0.50625g/cm^3
<h3>Density of a wood</h3>
Density is defined as the ratio of the mass to volume of a substance. The formula for calculating the density of an object is expressed as:
Density = Mass/volume
Given the following parameters
Mass = 32.4grams
Volume = 4^3 = 64 cubic centimeters
Substitute
Density = 32.4/64
Density = 0.50625g/cm^3
Hence the density of the wooden block is 0.50625g/cm^3
Learn more on density here: brainly.com/question/6838128
#SPJ1
Answer:
She made the mistake in step 2.
Step-by-step explanation:
Natalia's mistake is that she added 2 to the 7 when she should have subtracted it.
x÷5 + 2 = 7
x÷5 + 2 -2 = 7 -2
x÷5 = 5
Then multiply both sided by 5 to get rid of the division on the left
x = 25
This gives us the answer to x.
