Answer:
see explanation
Step-by-step explanation:
The equation of a parabola in vertex form is
y = (x - h)² + k (h, k) are the coordinates of the vertex
Given y = x² + 7x - 5
To express in vertex form use the method of completing the square
add/subtract ( half the coefficient of the x- term )²
y = x² + 2(
)x +
-
- 5
y = (x +
)² -
- 
y = (x +
)² - 
Hence
a =
and b = - 
Answer: 9? I’m not sure but it seems like it’s 9 as it mentions it in the problem
Answer:
2.5
Step-by-step explanation:
The one thing that changes in the problem is the milk. It goes from 8 oz. to 12 oz., so we are going to use the oz count to determine the amount of espresso. Since the amount of milk rose, so is the amount of espresso. Now, you take the larger number and divide it by the smaller number (12 / 8 = 1.5). This answer will tell you by what multiple it increased by. Once you have the multiple it increased by, you multiply that answer (1.5) by the other unknown changing number, so 1.5 x 1.5. Do this and you get 2.5.
Answer:
The third number is 47.
Step-by-step explanation:
The sum of three numbers is 3068 - this can be expressed mathematically as:

Given that two of the numbers are 1266 and 1755 (in order) then substitute x = 1266 and y = 1755:

Find the third number - solve for z-variable:

Therefore, the third number is 47.
If number of cars recorded by Lynn is 1, 1, 2, 2, 2, and 4 cars then the mean absolute deviation of the number of cars is 0.7
<h3>What is the mean absolute deviation?</h3>
The mean absolute deviation of a data set is the average of the absolute deviations from a central point .
Data we have is
1,1,2,2,2,4
Mean can be calculated as

Absolute value between the data points and mean can be calculated as :

Now mean absolute deviation can be calculated as :

Rounding to nearest ten
mean absolute deviation=0.7
If number of cars recorded by Lynn is 1, 1, 2, 2, 2, and 4 cars then the mean absolute deviation of the number of cars is 0.7
To learn more about mean absolute deviation visit :brainly.com/question/17381861