Answer:
an = 115 + (n - 1) (-6)
a25 = - 29
Step-by-step explanation:
We use the definition for the nth term of an arithmetic sequence:
an = a1 + (n - 1) d
a5 = 91 = a1 + (5 - 1) d
91 = a1 + 4 d
a20 = 1 = a1 + (20 - 1) d = a1 + 19 d
1 = a1 + 19 d
now we subtract term by term one expression from the other
90 = 4 d - 19 d
90 = - 15 d
divide both sides by -15 to isolate d
d = 90 / (-15) = -6
Now we can calculate what a1 is using for example:
1 = a1 + 19 d
1 = a1 - 114
add 114 to both sides:
115 = a1
Then our general expression for the sequence is:
an = 115 + (n - 1) (-6)
We can now use it to calculate the value of a25:
a25 = 115 + (24) * (-6) = -29
Answer:
14.8 pounds
Step-by-step explanation:
Here, we want to get the actual value made of fat from the body weight
What we have to do here is to multiply the percentage by the body weight
Mathematically, we have this as;
18.8% of 127 pounds
= 18.8/100 * 127 = 14.80 pounds
Answer:
92. p = 12l + 5m donde m = 0.5 l
Step-by-step explanation:
Supongamos que el recipiente de un litro se denota por ly el recipiente de medio litro se denota por m (= 0,5 l), entonces la ecuación se puede escribir como
92. p = 12l + 5m donde m = 0.5l
English
Let the one liter container be denoted by l and half liter container be deonted by m(= 0.5l ) then the equation can be written as
92. p= 12l + 5m where m = 0.5l
Answer:
176 hours
Step-by-step explanation:
They work 176 hours because
22*8=176
