The function that could represent the value of a rare coin that increases over time is; y = ²/₃x + 2
<h3>How to create linear equations?</h3>
We want to find which of the equations below could represent the value of a rare coin that increases over time
y = -³/₂x + 1
y = -²/₃x - 7y
y = ²/₃x + 2
y = ³/₂x - 6
Now, the general form of a linear equation in slope intercept form is;
y = mx + c
where;
m is slope
c is y-intercept
Now, for the equation to be increasing over time, it means the slope must be positive and the y-intercept must also be positive.
Looking at the given options, the only one where slope and y-intercept is positive is y = ²/₃x + 2
Read more about Linear Equations at; brainly.com/question/13738662
#SPJ1
1 inch is to 500 miles as
X inch is to 650 miles
X=1•650/500=1.3 inch
On the map will be 1.3 inch
Answer:
Option a is right
a) Since the subjects were not randomly selected for the study, we cannot conclude that a reduction in cavities can be attributed to the fluoride treatment.
Step-by-step explanation:
Given that in an experiment to measure the effect of fluoride "varnish" on the incidence of tooth cavities, 34 10-year-old-girls whose parents volunteered them for the study were raOne group was given fluoride varnish annually for 4 years along with a standard dental hygiene regimen;
the other group only followed the standard dental hygiene regimen.
The mean number of cavities in the two groups was compared at the end of the treatments. ndomly assigned to two groups.
Because they have selected 34 volunteers, the sample is not selected at random. This is biased one. Also sample size is very small compared to 10 year old girls in the world.
a) Since the subjects were not randomly selected for the study, we cannot conclude that a reduction in cavities can be attributed to the fluoride treatment.
is the right answer
Answer:
236 cm^2
Step-by-step explanation:
Formula
Area = sector angle/360 * pi * r^2
Givens
Sector angle = 120
r = 15
Solution
Area = 120/360 * 3.14 * 15 * 15
Area = 1/3 * 3.14 * 225
Area = 235.5
Area = 236 cm^2
*see attachement for diagram
Answer:
40.4 ft
Step-by-step explanation:
Let the part that broke away be represented as "x"
Thus, the digram makes a right triangle shape.
The closest total length of tree before the storm = x + 14 ft
Apply trigonometric function to find x.
Reference angle = 58°
Side adjacent to reference angle = 14 ft
Hypotenuse = x
Apply CAH, which is:
Cos 58 = adj/hyp
Cos 58 = 14/x
x * Cos 58 = 14
x = 14/Cos 58
x = 26.4191188 ≈ 26.4 ft
✔️closest total length of tree before the storm = x + 14 ft = 26.4 + 14 = 40.4 ft
