Answer:
All chapter has words and letters dude next time gives us more context
Step-by-step explanation:
Use this sum of cubes to help you
<span> (a^3+b^3)= (a+b)(a^2-ab+b^2)
</span>
a=3x and b=7 Plug into equation above and solve for x now you will get one real answer and two imaginary.
Do you understand or need more help?
Answer:
B. (3, 14).
Step-by-step explanation:
Substitution means that you first solve for one variable, and then use that solution to find the other.
For example, if x = y, and x + 5 = 7, you can say that y + 5 = 7.
Now, moving on to the actual problem.
The first equation says that y = 6x - 4, and the second equation says y = 7x - 7.
That means for the first equation, instead of y, it is valid to say that 7x - 7 = 6x - 4.
7x - 7 = 6x - 4
7x - 6x = -4 + 7
x = 3.
You could put the x=3 into the y = 7x - 7 equation to find what the y-coordinate is.
y = 7 * 3 - 7
y = 21 - 7
y = 14.
And there you have your coordinates! (3, 14).
Hope this helps!
I wasn’t sure if I should include all the numbers if they were doubles but you get the idea. Hope this helps!
Answer:
168 yards
Step-by-step explanation:
area= 196y²
now ,
A=L²
L= ✓A
=✓196
=14 yards
now , perimeter = 4 L = 14×4 = 56 yards.
then, to run around it 3 times,
distance = 3 × 1 round distance (ie. perimeter)
= 3 × 56
= 168 yards.