Answer:
okay here is what i think see if my explanation will help
Step-by-step explanation:
i think
(4*3/10)*3 get it just follow this work it out and tell me your answer
Answer:
Step-by-step explanation:
Answer:
14 times +3
Step-by-step explanation:
also srry could not find the sign for times (:
Carlos and Ana were asked to find an explicit formula for the sequence -10,-4,2,8,...−10,−4,2,8,...Minus, 10, comma, minus, 4, c
mars1129 [50]
Answer:
Ana is correct
Step-by-step explanation:
Given



Required
Determine who is right?
To do this, we simply test each sequence.
For Carlos:
When n = 1

When n = 2

<em>This is incorrect because the first and second term of the sequence are -10 and -4 not -4 and 2</em>
<em></em>
For Ana:
When n = 1

When n = 2

When n=3

When n = 4

This is correct.
<em>Hence, Ana is correct</em>
Let
Vco------------------- >Volume cone
Vcy------------------ >Volume cylinder
r= 8mm
hco----------- > height of cone=18 mm
hcy------------ > height of cylinder =54-18=36 mm
then
Vco=π*r² *hco/3--------- > π*8² *18/3=π*384 mm³
Vcy=π*r² *hcy--------- > π*8² *36=π*2304 mm³
the total cubic millimeters of sand=Vco+Vcy=π*384+π*2304=π*2688
if 10π cubic millimeters --------------------- > 1 seg
π*2688--------------------------------- X
X=π*2688/10π=268.8 seg
the answer is 268.8 seg