<span> It would depend on the number of rows?
This is an arithmetic sequence and the sum of n terms is -->
n/2(2a+(n-1)d), where a is the first term and d is the common
difference. In this case a = 10, d =6
n/2(20+6(n-1)) = 3n^2 + 7n = ANSWER
n = number of rows
</span>
Answer:
D
Step-by-step explanation:
(4x√5x^2 +2x^2√6)^2
remove the last ^2 by multiplying the parenthesis by each other:
(4x√5x^2 +2x^2√6) * (4x√5x^2 +2x^2√6)
use FOIL & distribute :
4x√5x(4x√5x +2x^2√6) +2x^2√6(4x√5x +2x^2√6)
apply the distributive property once more:
4x^2√5(4x^2√5)+ 4x^2√5(2x^2√6) + (2x^2√6(4x^2√5) +2x^2√6(2x^2√6)
remove parenthesis and combine like terms to get:
104x^4+16x^4√30
answer is D
Answer:
7/12
Step-by-step explanation:
- when you divide 7/6 by 2, you have to make the 2 into a fraction; which would be 2/1.
- you would flip the 2/1 to 1/2, and make the divide sign into a multiplication sign.
- then just multiply! hope this helps! :)
The incenter of a triangle is where the angle bisectors of the triangle meet. That means angle A is 64, angle B is 74, and using the triangle angle sum, angle C is 42 degrees. Divide that in half to get the measure of DCA, 21 degrees.
Given:
When the measure of ∠4 is 120°, the measure of ∠1 is 60°.
To determine:
The statement is always or sometimes true.
Solution:
If two lines are intersecting, then 4 angles are formed.
Sum of the measure of adjacent angles in a straight line is always 180°.
Let us substitute ∠4 = 120° and find ∠1.
m∠1 + m∠4 = 180°
m∠1 + 120° = 180°
Subtract 120° from both sides.
m∠1 + 120° - 120° = 180° - 120°
m∠1 = 60°
Therefore when the measure of ∠4 is 120°, the measure of ∠1 is 60°.
This statement is always true.