Answer:
1st attachment x=25,
2nd attachment x=107, x=-26
Step-by-step explanation:
Answer:
it block pic
Step-by-step explanation:
Step-by-step explanation:
Sum of arithmetic terms = n/2 × [2a + (n - 1)×d], where 'a' is the first term, 'd' is the common difference between two numbers, and 'n' is the number of terms.
this is the same as n/2 × (a1 + an), because
an = a1 + (n-1)×d
so, for the series above :
a or a1 = 2
d = 7, as every new term is the previous term plus 7.
for n
37 = a1 + (n-1)×d = 2 + (n-1)×7
and now solve for n
35 = 7n - 7
42 = 7n
n = 6
so, the sum of all terms is
6/2 × (2+37) = 3×39 = 117
Answer:
Step-by-step explanation:
The latte is what covered the coffee, Caffe latte is a coffee drink made with espresso and steamed milk, and this latte do form heart on the coffee, then we are told that the area of the latte heart is 55cm²
Then, space where latte is not form has a diameter 4cm
Then the radius is diameter divided by 2
r=d/2
r=4/2 =2
Then area of the circle which for the surface for the coffee is πr²
A=πr²
A=3.142×2²
A=12.568cm².
Area of coffee not covered is
55-12.568=42.432cm²