The tax rate for Regina’s purchase is 8.75%. How much money did Regina spend at the store.
2 answers:
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First we have to find the slope of the given line. We do that by puttiing the equation into slope-interept form. or solving it for y (same thing). 2x + 4y = -6. We move the 2x over by subtraction to get 4y = -2x - 6. Divide both sides by 4 to get the slope-intercept form we are seeking. . The slope that is perpendicular to that slope of -1/2 is the opposite reciprocal. Therefore, the perpendicular slope is a positive 2/1 or just 2. If this new line goes through the point (2, 5), it goes through the x value of 2 and the y value of 5. We will use those values along with the slope of 2 to solve for b in our slope-intercept equation. That looks like this:
and b = 1. That means our new equation, the one that is perpendicular to the given line, has an equation of y = 2x + 1.
Since the <u>difference between consecutive terms is not constant</u>, the sequence is not arithmetic.
In an arithmetic sequence, the <u>difference between consecutive terms is constant</u>, called common difference d.
A recursive formula is given by:
In which is the first term.
In this problem:
- The terms are: 100, 135, 149, 165, 188.
- 135 - 100 = 35, 149 - 135 = 14, that is, the differences are not constant, so this is not an arithmetic sequence.
A similar problem is given at brainly.com/question/23901992