Answer:
No, this is not a strong evidence that the parameter has changed since 2018. This is because, there are so many factors that could have led to the fall in percentage of "disadvantaged school students" from the initial 3.5% to 4.3%.
Some of the factors could be reduction in the number of disadvantaged students, sample size considered being considered as well as the geographic location upon which the random sampling was made.
Step-by-step explanation:
You're almost there! These are the only ones you've missed:
160cm are 1600mm. In fact, centimeters (cm) are immediately after millimeters (mm), so there's only a factor of 10 between them. In other words, one centimeter equals 10 millimeters, so you have to multiply by 10 if you want to convert cm to mm
109g are 0.109kg. In fact, one kilogram (kg) equals 1000 grams (g), so one gram equals one thousandth of a kilogram. So, when you convert grams to kilograms, you have to divide by 3, which means shifting the decimal separator three places to the left:
109
10.9 <--- one shift
1.09 <--- two shifts
0.109 <--- three shifts
For the exact same reason, 250 meters are 0.250 km
Everything else is correct, so good job!
Taylor and her children bought 4 bags of popcorn and 6 candies.
How to create linear equation using two variables?
If an equation is written in the form ax + by + c=0, where a, b, and c are real integers and the coefficients of x and y, i.e., a and b, respectively, are not equal to zero, then it is said to be a linear equation in two variables. Such an equation has a pair of numbers as its solution, one for x and one for y, which further equalizes the two sides of the equation. A specific point on the graph represents the solution of a linear equation in two variables, ax + by = c, where the total of these two values will equal c when the x-coordinate is multiplied by a and the y-coordinate by b. Basically, there are infinitely many solutions to a linear equation with two variables.
Let the number of bags of popcorn be = x
Let the number of candies be = y
Given, she bought $ 81 worth of bags of popcorn and candies.
Also, each bag of popcorn costs $9 and each candy costs $4.50.
Thus, the equation for the same is ⇒ 9x + 4.50y = 81 -- (i)
Again, she bought 6 more candies than bags of popcorn.
Thus, the equation for the same is ⇒ y = x + 6 --(ii)
Using (i) and (ii), we have,
9x + 4.50(x + 6) = 81 ⇒ 9x + 4.50x + 27 = 81 ⇒ 13.50x = 54 ⇒ x = 4
Using x = 4 and (ii), we get,
y = x + 6 = 4 + 6 = 10
Thus, (4, 10) is the point where the two equations meet.
Therefore, they bought 4 bags of popcorn and 6 candies.
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The answer is 8,498.
I hope I helped :-)
Put them into y=mx+b
y=1/3x -1
y=2/3x-4
Graph them. Where they touch is your answer. No touch? No solution. Same line? Infinite solutions.
Second set: Same thing.
Solution to first set is (9,2)
