Answer:
D. n-3=45
Step-by-step explanation:
So we know that the sum is 45,
=45
Now we must know the order of the expression,
It says that 3 less than,
3 less than means it is being decreased by 3, so,
n - 3 = 45
The answer to a8 of the sequence will be 8. I found this out by multiplying the subtraction value (.25) by the number in the sequence needed (8) to get 2. Then, I subtracted the starting number with 8 to get 8 (10-2 = 8). Hope this helped :)
Answer:
18
Step-by-step explanation:
a=6
r=2/6=1/3<1
Answer:
x = 60°
Step-by-step explanation:
It is given that the stones are equally spaced. As the circle is divided into 6 parts by 6 split points and there are 360∘ in the circle, each part equals 360∘/6 = 60∘. So,
mAB◠ = 60∘
mBC◠ = 3 (60∘) = 180∘
If a tangent and a secant intersect in the exterior of a circle, then the measure of the angle formed is half the difference of the measures of its intercepted arcs.
x = 1/2 (mBC◠ − mAB◠)
Substitute the known values into the formula.
x = 1/2 (180∘ − 60∘)
= 1/2 (120∘)
= 60∘
Therefore, x = 60∘.
Answer:
10
Step-by-step explanation:
X = -1 so, we have:
3·1² + 1
3² + 1
9 + 1
10
