Answer:
(1.13, 7.74) and (-4.13, 18.26)
Step-by-step explanation:
This can be solved in two ways: mathematically and graphically.
<u>Graphing</u>
Plot both lines and find where they intersect. See the attachment.
The intersection points are (1.13, 7.74) and (-4.13, 18.26)
<u>Mathematical</u>
y + 2x = 10
y = 10 - 2x
y = 3x² + 7x - 4
10 - 2x = 3x² + 7x - 4
3x² + 9x - 14 = 0
Solve this using the quadratic equation:
x = 1.13 and -4.13
Use these two values of x to find y:
y = 10 - 2x
y = 10 - 2(1.13)
y = 7.74
y = 10 -2x
y = 10 -2(-4.13)
y = 18.26
The two points are:
(1.13, 7.74) and (-4.13, 18.26)
Answer:
$68.99
Step-by-step explanation:
This is called percentage decrease:
(100 - 72)% = 28%
246.40 × 28/100
= $68.99
Answer: 942
Step-by-step explanation: 20 x 3.14 = 62.8 62.8 x 15 = 942
Answer:
2
Step-by-step explanation:
To solve this equation, you need to convert 2 1/2 into an improper fraction:
2 1/2 = 5/2
Then, you convert this into 6ths:
5/2 = 15/6
Next, you divide 15/6 by 5/6:
15/6 / 5/6 = 3
Because Jamal wouldn't make a stop at the end (it wouldn't be considered a stop because he is done), you subtract 1:
3-1=2
The answer is 2 (hope this helps, sorry if i got it wrong)
This can also be represented as:
Using difference of two squares;
Hope I helped? ☺️
