Answer:
Step-by-step explanation:
Given
See attachment for graph
Solving (a): Increasing interval
To do this, we simply identify the interval at which the value of the graph increases.
The value has an increased interval between -2 and 1.5 (of the x-axis).
Hence, the increasing interval is:
Solving (b): Decreasing interval
To do this, we simply identify the interval at which the value of the graph decreases.
The value has decreased intervals between - infinity and -2 and also 1.5 and infinity (of the x-axis).
Hence, the decreasing interval is:
Answer:
The numbers are either ±13.35 and ±1.35 or ±1.35 and ±13.3
Step-by-step explanation:
Let the two numbers be 'x' and 'y'.
Given:
The squares of the sum of two numbers = 144
The sum of their squares = 180
The sum of the numbers = 
The square of the sum of numbers = 
Square of first number = 
Square of second number = 
The sum of their squares = 
Now, as per question:
Expanding equation (1) using the formula 
This gives,
Plug in the value of 'y' from equation (3) in equation (1). This gives,
Therefore,
Therefore, the numbers are either ±13.35 and ±1.35 or ±1.35 and ±13.3
Answer: C - distributive property of multiplication over subtraction
Step-by-step explanation:
Answer:
Boys x 2 = Girls
Step-by-step explanation:
If there are twice as many girls in school as boys than take the number of boys and multiply that by 2. For example if there are 400 boys in school and there are twice as many girs your equation would, 400 x 2 = 800 girls.
