Please I beg of you I’ll give brianliest i don’t understand.

x=15

m<ABC=30

m<BCA=60

m<CAB=90

Step-by-step explanation:

to find the value of x I used the 5x+15 since we know that is a right angle. so we equal 5x+15 to 90. you subtract 15 to both sides and then get 5x=75 and then divide by 5 to both sides to get x=15. you the plug in the 15 to the other parts, so 2x=2(15)=30 and 4x=4(15)=60

x=15

m<ABC=30

m<BCA=60

m<CAB=90

Step-by-step explanation:

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for