Answer:
- A. A neutrally-charged carbon atom contains 6 positively-charged protons and 6 negatively-charged electrons. CORRECT
- B. The average temperature in Cleveland, Ohio in December is 38∘F. On a particularly cold day last year, the temperature change was −38∘F from the previous day. CORRECT
- C. A model rocket flies 50 meters into the air. It falls 50 meters before it hits the ground. CORRECT
- D. The price of gold is $3.00 per ounce less than it was yesterday. WRONG
Explanation:
The <em>additive inverse property</em> is the property that states that the addtiion of a number with its negative is zero: b + (-b) = 0.
Let's see every choice:
- A. A neutrally-charged carbon atom contains 6 positively-charged protons and 6 negatively-charged electrons. CORRECT
6 positively'charged protons ⇒ charge +6
6 negatively charged electrons ⇒ charge -6
Total charge = +6 + (-6) = 0
The result is that the atom has a zero net charge.
- B. The average temperature in Cleveland, Ohio in December is 38°F. On a particularly cold day last year, the temperature change was −38°F from the previous day. CORRECT
Temperature of a day is 38° F
Change of temperature was - 38° F
Resulting temperature: 38° F + ( -38° F) = 0
- C. A model rocket flies 50 meters into the air. It falls 50 meters before it hits the ground. CORRECT
50 meters upward ⇒ +50 m
50 meters downward ⇒ -50 m
Final altitude = +50 m + (-50 m) = 0
- D. The price of gold is $3.00 per ounce less than it was yesterday. WRONG
Price of yesterday : x
Price of today: x - 3.00
This is not the application of the additive inverse property.
Y=-1/4(x- - 2)^2+ 4
You can see it take shape by drawing it out. Then shift x left by 2 (-2) and up 4 (+4) . A trick for the slope is that by looking at .75 you know it has to be some fraction with a even denominator.
Answer:
415.48 or 132.25 pi cm
Step-by-step explanation:
23 divided by 2 is 11.5 so that is the radius. Then you multiply the radius by pi. Or you can do 11.5 x 11.5 if you are trying to find the solution without pi.
Answer:
rational
Step-by-step explanation:
(was the comma supposed to be there?)
Answer:
Kayla is correct
Step-by-step explanation:
For a vertical line, the x-value is the same
This means there is no change in the x value
A slope is calculated by dividing by the change in x value
since in this case , we will be dividing by zero, it means that the value of our slope is going to be undefined
This means that Kayla is correct