What are the x-intercepts of the graph below of the function below y=x^2+2x-15
2 answers:
Answer:
Option A - (-5,0) and (3,0).
Step-by-step explanation:
Given : Function
To find : What are the x-intercepts of the function ?
Solution :
The x-intercept means when y became zero i.e. y=0,
Solve the quadratic equation by middle term split,
The x-intercepts are (-5,0) and (3,0).
Therefore, Option A is correct.
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The value of g = 144 solved by using direct proportion.
<h3>What is a direct proportion?</h3>Direct proportion or direct variation is the relation between two quantities where the ratio of the two is equal to a constant value. It is represented by the proportional symbol, ∝.
Given that,
h = , j =
, g = 4
g ∝ hj
g = khj
where k is a constant.
4 = k××
k = 24
Also given that,
g = ? , h =2, j = 3
g = khj
g = 24×2×3
g = 144
Hence, The value of g = 144.
To learn more about direct proportion from the given link:
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Answer:
Distance covered by Reuben jogging in 4 calendar weeks = 61.2 miles
Step-by-step explanation:
Distance covered by Reuben jogging every weekday = 2.25 miles
Distance covered by Reuben jogging every weekends is 1.8 times as far as he covers in weekdays to nearest hundred.
To find Reuben jogs in 4 calendar weeks.
Solution:
Distance covered by Reuben jogging every weekends =
There are 5 weekdays in a week.
Thus, total distance traveled in weekdays =
Distance jogged in a week =
Using unitary method to find distance jogged in 4 weeks.
If Reuben jogs 15.3 miles in a week
Thus, in 4 weeks he will jog =