Answer:
Step-by-step explanation:
Given
Required
What is l when S = 725
This can be solved using Sum of n terms of an AP;
Where
To get T1; we substitute 4 for k in 2k - 3
To get Tn; we substitute l for k in 2k - 3
n = the number of terms;
Since k = 4 to l, then
Substitute these values in
Collect Like Terms
Open the bracket
Subtract 725 from both sides
or
or
But l must be positive;
Hence,
An equation that is true for all values of the variables in its domain is <u>an identity</u>
<u></u>
Hope that helps!
Answer:
10
Step-by-step explanation:
The median of a triangle, when bisected by other medians has a 2:1 ratio. So the longest part is twice the length of the shorter one. Since median YJ is 15, when divided by 3, it has equal parts of 5. 5*2= 10. And so segment ZY is equal to 10.
Answer:
The reflection changes the orientation of a figure by flipping it to the other side
explanation:
Think of a mirror it reflects your physical image
Answer:
f(x) = 4x² + 9x - 28
Step-by-step explanation:
Create the polynomial by multiplying (4x - 7) and (x + 4) together:
f(x) = 4x² + 16x - 7x - 28, or
f(x) = 4x² + 9x - 28
Next time, please share the given answer choices. Thanks.