.740
12x2 - 28x - 15= 12x2 - 18x - 10x - 15= 6x(2x - 3) - 5(2x - 3)= (6x - 5)(2x - 3)
is 28x squared? if it is, the answer would be, 3(2x+5)(4x+3).
Factored, that's (x - 6)(5x + 2) x = 6, -2/5
The lateral area L.A. of the right triangular prism is the sum of the areas of its lateral faces, which are rectangles with length the height (l = h = 15) and wide the sides of the triangle (w1 = leg1 = 3, w2 = leg2 = 5, w3 = hypotenuse = 7). So we have: L.A. = (15 x 3) + (15 x 5) + (15 x 7) L.A. = 15(3 + 5 + 7) L.A. = 225 Thus, we can also say that the lateral area of a prism is the product of the perimeter of its base with the height of the prism.
what is -12X squared +28X - 15? i figured it out myself. its (-6X + 5)(2X - 3).
.740
12x2 - 28x - 15= 12x2 - 18x - 10x - 15= 6x(2x - 3) - 5(2x - 3)= (6x - 5)(2x - 3)
x=1/3,3/5
is 28x squared? if it is, the answer would be, 3(2x+5)(4x+3).
Factored, that's (x - 6)(5x + 2) x = 6, -2/5
The probability that you pick 3 white balls is 0.05 or 5%.----------------------------------------------------------------------------------------------------EXPLANATIONThe probability of first drawing a white ball is: P(W1) =3/6.The probability of drawing a white ball given the event that you already draw awhite ball in the first draw and not replacing it back is: P(W2│W1) =2/5.The probability of drawing a white ball on the third draw given the event that awhite ball was drawn in the first and in the second draw is: P(W3│(W1UW2)) =1/4Now, the probability of drawing 3 white balls one by one with out replacement(taking all 3 balls at a time gets the same analysis and result) is:P(W1UW2UW3) =P(W1)∙P(W2│W1)∙P(W3│(W1UW2)) =(3/6)∙(2/5)∙(1/4) =1/20=0.05 =5%.
It depends on what the statement means. If the total fish caught in the first part of the statement is 5 fish each for a total of 25 fish, it will take them 1 minute. If the total is 5 fish, it took each fisherman 5 minutes to catch one fish, it will take them 5 minutes.
The wondermail for the Beauty Scarf is here: 1?-N RW+? 48?5 W3?7 64?6 K.?W Answered by: 123456789
The lateral area L.A. of the right triangular prism is the sum of the areas of its lateral faces, which are rectangles with length the height (l = h = 15) and wide the sides of the triangle (w1 = leg1 = 3, w2 = leg2 = 5, w3 = hypotenuse = 7). So we have: L.A. = (15 x 3) + (15 x 5) + (15 x 7) L.A. = 15(3 + 5 + 7) L.A. = 225 Thus, we can also say that the lateral area of a prism is the product of the perimeter of its base with the height of the prism.
There is no specific rule. Among the infinitely many possibilities are y = 5 (whatever x is) y = x + 4 y = 27x - 22 y = x2 + 4x y = 28x/4 - 2
That particular rule works due to the fact that the number can be divided down into numbers which are divisible by 4. Mathdoc's rule is that in a 5-digit number (abcde [which is actually 10000a+1000b+100c+10d+e] ), 1000a+100b+10c+d+4e=13V (13V just represents a number which is divisible by 13.) So if we have our number 10000a+1000b+100c+10d+e=13K which is supposedly divisible by 13, and the equation 1000a+100b+10c+d+4e=13V should be giving an answer which is divisble by 13 (according to Mathdoc's rules). Therefore, we must try and make the equations equal the same. So a start would be to multiply Mathdoc's equation by ten so it is closer to our number: 10000a+1000b+100c+10d+40e=13V Now we have 40e instead of just e, so we take away 39e from both sides of the equation: 10000a+1000b+100c+10d+e=13V-39e Guess what? The left side of the equation is our number and the right side must be divisible by 13. Since the left side of the equation equals the rightside, the Mathdoc formula works.