Answer:
<h3>.2a + 4b = -2</h3><h3> 2a + 3b = 23</h3><h3><u>We</u><u> </u><u>subtr</u><u>act</u><u>.</u><u>.</u></h3><h3><u> </u><u> </u><u>0</u><u> </u><u>+</u><u> </u><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u></h3>
<h3>a + (2×-25) = -1</h3><h3>a - 50 = -1</h3><h3>a = -1+50</h3><h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u><u>.</u></h3>
<h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u></h3><h3><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u><u>.</u></h3>
Step-by-step explanation:
<h3><u>provin</u><u>g</u><u> my</u><u> </u><u>an</u><u>swer</u><u>.</u></h3>
<h3>a + 2b = -1</h3><h3>49 + (2×-25) = -1</h3><h3>49 - 50 = -1</h3>
<h3>2a + 3b = 23</h3><h3>(2×49) + (3×-25) = 23</h3><h3>98 + (-75) = 23</h3><h3>98 - 75 = 23</h3>
Answer:
- reflection across the x-axis
- translation 10 units to the right (in either order)
Step-by-step explanation:
The direction of the sequence of vertices ABC is counterclockwise, but the sequence of A'B'C' is clockwise. This means that an odd number of reflections across a line will be involved.
Since A is topmost and A' is bottom-most, a reflection across a horizontal line is indicated. The line halfway between A and A' is the x-axis.
If the figure is reflected across the x-axis, the new location of A is (-5, -4). The location of A' in the figure is (5, -4), which is 10 units to the right.
So, one sequence of operation mapping ABC to A'B'C' is ...
reflection across the x-axis
translation 10 units right.
Answer:
This statement is an example of - statistical inference
Step-by-step explanation:.
A political pollster states: "Fifty-seven percent of all voters approve of the President."
This statement is an example of - statistical inference
Statistical inference is defined as the process of drawing conclusions about populations by using data analysis.
There are two types of statistical inference - statistical estimation and statistical hypothesis testing.
The formula would be y = 1,236,000(1.3)^t
After 10 years, the population would grow to become 17,039,309.59 people. You can round up to 17,039,310 people if the question asks to round to the nearest person.
Answer:
$7.25 for 5 liters
Step-by-step explanation:
If you get the unit rate of $4.47 for 3 liters it is 1.49 per liter.
1.49 x 5 = 7.45
Therefore, $7.25 for 5 liters is a better deal than $7.45 for 5 liters.
