Answer:
x = 63.7°
Step-by-step explanation:
Since the triangle is right we can use trig. ratios to solve
tan x° = 
= 
⇒ x = 
() = 63.7°
Answer:
About 2/3 of the animals at the shelter are dogs
Step-by-step explanation:
Let's first transform the mixed number to the corresponding improper fraction.
67 2/3 is equivalent to (3*67 + 2)/3 = 203/3
we are asked to find a fraction equivalent to 203/3%. To do this, we have to divide the fraction by 10, as follows:
203/3% = (203/3)*(1/100) = 203/300 ≈ 2/3
Answer:
girl/boy use photomath if ur failing or just use these.
Step-by-step explanation:
11. 5x^2-6x-12
12. 2x(4y+5x)
13.3y^2+16xy
if you need the rest use photomath I am sure it will come to the same answers I got.
Answer:
Step-by-step explanation:
The formula you will need for this is:
where A is the amount after some decay has happened, A₀ is the intial amount, t is the time in hours, and H is the half-life in hours. Those values for us are:
A = 2 g
A₀ = 25 g
H = 4.95 hrs and
t = ?
Filling in:
Keep in mind that, because of the nature of the exponential form of this equation, you CANNOT simply multiply the 25 by the 1/2. Exponential equations don't work that way. Begin instead by dividing both sides by 25 to get
The goal is to get that t out from its exponential position. Do that by taking the natural log of both sides:
After you take the natural log of the right side, the property allows you to bring the exponent down out front:
Now divide both sides by ln(.5) to get
Simplify the left side out on your calculator to get
and then divide:
Finally, multiply both sides by 4.95 to get
3.643856(4.95) = t so
t = 18.0 hours which is choice C
Answer:
4.2,220%,-3/5,-4'5
Step-by-step explanation:
