1^2-2^2+3^2-4^2+5^2-6^2+7^2-8^2+9^2 -10^2+11^2-12^2+13^2-14^2+15^2-16^2 +17^2-18^2+19^2-20^2+21^2-22^2+23^2 -24^2+25^2-26^2+27^2-28^2+29^2-30^2 +31^2-32^2+33^2-34^2+35^2-36^2+37^2 -38^2+39^2-40^2+41^2-42^2+43^2-44^2 +45^2-46^2+47^2-48^2+49^2-50^2+51^2 -52^2+53^2-54^2+55^2-56^2+57^2-58^2 +59^2-60^2+61^2-62^2+63^2-64^2+65^2 -66^2+67^2-68^2+69^2-70^2+71^2-72^2 +73^2-74^2+75^2-76^2+77^2-78^2+79^2 -80^2+81^2-82^2+83^2-84^2+85^2-86^2 +87^2-88^2+89^2-90^2+91^2-92^2+93^2 -94^2+95^2-96^2+97^2-98^2+99^2-100^ 2 plz provide a step by step (smarter way)

odd numbers are positive even are neg

1-100 odd numbers add up to 2500

even from 1-100 =2550

add together

the last cube is negative so the number will be negative

9) i can't see the angle so whatever it is just do this: cos(angle) x hypotenuse and then use that answer and they hypotenuse and plug it into this: (answer you just got)^2 + b^2 = (hypotenuse)^2. the first answer will be the answer of the adjacent side and the second answer after this equation will be the opposite side.

10) y = 14 x = √147 or 12.12435565

11) x = 4.8

12) x = 4.2

13) x = 9.3

14) pq: 13.2

qr : 17.6

angle p: 53º

15) angle c: 54.3º

angle a: 35.7º

16) h = 21040

v = 1841

step-by-step explanation:

10) 7/sin(30) = 14 = y

7^2 + b^2 = 14^2

49 + b^2 = 196

b^2 = 196 - 49

√b^2 = √147

x = √147

11) cos(70) x 14 = 4.788282007

x = 4.8

12) tan(25) x 9 = 4.196768923

x = 4.2

13) sin(31) x 18 = 9.270685348

x = 9.3

14) pq: sin(37) x 22 = 13.23993051

pq: 13.2

qr: cos(37) x 22 = 17.56998122

qr : 17.6

angle p: 180 - (37 + 90) = 53º

15) cos-1(7/12) = 54.31466529

angle c: 54.3º

angle a: 180 - (90 + 54.31466529) = 35.68533471

angle a: 35.7º

16) 4 x 5280 = 21120

cos(5) x 21120

h = 21039.63202

h = 21040

sin(5) x 21120

v = 1840.729287

v = 1841