9
70 x 30 = 2,100
The two square roots of 4,900 are +70 and -70 . 70 x 70 = 4,900 (-70) x (-70) = 4,900
x = + or - 9 x/9 = 9/x x squared = 81 x = +/- 9
70 x 8 x 3/4 ie 420
70 x 20 = 1,400 70 x 9 = 630 Total: 2,030
1 x 70 = 70 2 x 70 = 140 3 x 70 = 210 4 x 70 = 280 5 x 70 = 350 6 x 70 = 420 7 x 70 = 490 8 x 70 = 560 9 x 70 = 630 10 x 70 = 700 11 x 70 = 770 12 x 70 = 840
Looks like 70, 490 = 7 x 70, 630 = 9 x 70 and 7 and 9 are co-prime.
630
Let x, x+2 and x+4 be the three consecutive odd integers. x+2(x+2)+3(x+4)=70 x+2x+4+3x+12=70 6x+16=70 6x=54 x=9 The numbers are 9, 11, and 13 Check: 9+2(11)+3(13)= 9+22+39=70
°C = (°F - 32) x 5/9 for 60 degrees fahrenheit oC = (60-32) x 5/9 = 28 x 5/9 = 15.5555 and for 70 degrees fahrenheit = (70 - 32) x 5/9 = 38 x 5/9 = 21.1111 degrees Celsius Final Answer :60-70 oF = 15.6 - 21.1 oC
-70
Expressed as a percentage, 9/70 x 100 = 12.857142 recurring (that is, 12.857142857142...) percent.
630 = 7 x 90 = 9 x 70 = 5 x 126 = 6 x 105
9 x 70 = 630 miles
x2 - 11 = 70 x2 = 81 x = sqrt(81) x = ±9
70 x 9 = 630