It says solve each equation with the quadratic formula.
X=-2
Y=3
Z=-1
The percentage of the members of the band won a medal is 60%.
Given that, at a competition 24 of 40 members of a middle school band won a metal.
Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
The fraction for 24 of 40 members is
24/40
So, the percentage
= 24/40 ×100
= 60%
Hence, the percentage of the members of the band won a medal is 60%.
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Answer:
Step-by-step explanation:
24/40=60%
A.) y = 47(1.191)x
B.) y = 34(1.204)x
C.) y = 26.9x – 1.3
D.) y = 27x – 4
Answer:
Hence, the model that best represents the data is:
Step-by-step explanation:
We are given a table that shows the estimated number of lines of code written by computer programmers per hour when x people are working.
We are asked to find which model best represents the data?
So for finding this we will put the value of x in each of the functions and check which hold true that which gives the value of y i.e. f(x) as is given in the table:
We are given 4 functions as:
A)
B)
C)
D)
We make the table of these values at different values of x.
x A B C D
2 66.66 49.3 52.5 50
4 94.57 71.44 106.3 104
6 134.14 103.57 160.1 158
8 190.27 150.14 213.9 212
10 269.91 217.64 267.7 266
12 382.85 315.5 321.5 320.
Hence, the function that best represents the data is:
Option C.
y=26.9x-1.3
The exponential function gotten from the table is y = 34(1.204)ˣ
An exponential function is in the form:
y = abˣ
where y, x are variables, a is the initial value of y and b is the multiplier.
Let y represent the lines of code written by x people.
From the table using the points:
(2,50) and (12, 320)
At (2, 50):
50 = ab² (1)
At (12, 320):
320 = ab¹² (2)
From equation 1 and 2:
b = 1.204, a = 34
The exponential function gotten from the table is y = 34(1.204)ˣ
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The measure of the angle x is 40.2 degrees after applying the sin ratio option second 40.2° is correct.
Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.
We have a right-angle triangle shown in the picture.
From the sin ratio:
sinx = side opposite to angle/hypotenuse
sinx = 12/18.6 = 0.645
x = sin⁻¹(0.645)
x = 40.17≈ = 40.2 degrees
Thus, the measure of the angle x is 40.2 degrees after applying the sin ratio option second 40.2° is correct.
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