Answer:
50
Step-by-step explanation:
find a number that is 16 less than twice a number is decrease is 84
so if i get this right it is:
84 = 2x-16?
if so we do the following:
84+16 = 2x (Move the variables to one side and the numbers to the other)
100 = 2x (simplify)
50 = x (divide each side)
Answer:
Step-by-step explanation:
I need the expressions, please.
The last one- its the only one that applies to the 4* rule.
First we need to find how far away the base of the ladder is from what it is leaning against. The ramp is the hypotenuse and the height from the ground in a leg. Let’s use Pythagorean’s theorem.
a^2 + b^2 = c^2
Substitute
a^2 + (5)^2 = (20)^2
Solve for a^2
a^2 = (20)^2 - (5)^2
Solve for a
a = 5 √15
The slope will be rise over run
5/5 √15 = √15/15 or 0.258…
Answer:
if the wavelength is observed in vacuum.
Step-by-step explanation:
,
where
- is the frequency of this beam of light,
- is its wavelength, and
- is the speed of light.
in vacuum and in the earth atmosphere. However, the value of will be smaller in other media.
.
- is the SI unit for speed.
- is the SI unit for distance.
.
.
One [oscillation] in each second is the same as one Hertz . In other words, .
.