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Let's just say that thee are 100 people in the room

75 are men

40 have blond hair

100 - 40 = 60      

          75 - 60 = 15 men would be the least number with blond hair

See the answer here: https://web2.0calc.com/questions/help-meeee_10

2015 = 5 * 13 * 31

The smallest number with 2015 divisors is = [2^4 * 3^12 * 5^30] =7919088006019592285156250000

3 (x^2 + kx + 24)

  3 ( x+1)(x+24)

    3 (x^2 + 25x + 24 )

     (3 x^2 + 75x+72)

        (3x+3)(x+24)               I think the answer would be   n=75     (?)

Thank you very much! But 9420 is incorrect

( 2000, 2400, 2900, 3300, 3800) >>These years would become "Leap Years" under the proposed scheme.

20 questions

11 pointers =x            value = 11 x

3 pointers =(20-x)      value = 3(20-x)

        summed = 100

11x + 3 (20-x)  = 100     solve for x     this is the number of 11 pointers    

c = children tix                   value =   $ 6 c

a = adult tix = (220-c)         value = $ 4 (220-c)                 summed they equal 1250

6c              +           4 (220-c)          = 1250       solve for c          then    a = 220 - c   

The area of the lower figure alone (if it were a square....which it ALMOST is ) would  be about 311

   so the sum must be more than that        476 ft²

Calculated:    top figure    12 x14 = 168 ft²    (parallelogram)

                      botom figure 11x ( 31+25)/2 = 308 ft²     (trapezoid)         total = 476 ft²

The shaded area is LESS THAN or Equal to the solid line

    and greater than the two dashed lines

SO answer has to have ONE  <=     and  two >    in it      One of the middle two choices

      it IS greater than    y = x             Still the middle two choices

The line on the left has a negative slope      still the middle two

   we need to find which equation matches the line on the left ....

      when x = -2    y = 0     which matches the   THIRD answer

Answer # 3

First, realize the two lines are perpindicular (right triangle is formed)

Graph them

then area = 1/2  b x h        = 1/2 *  6 * 1.8 = ....... units²

David produces 6 more widgets on Monday.

I graphed it, and the soluitons are -2, 0, and 1.

The probability is 4/21.

sumfor(n, 1, 100, n*n!) = 9425947759 8383594208 5162312448 2936749562 3127947025 4376832788 9353416977 5993162214 7650308786 1591808346 9116234900 0354959958 3369706302 6032639999 9999999999 9999999999

140-x     is to 81        as   x   is to 9

(140-x) / 81 = x/9

9(140-x) = 81x

x = 14

AC =    140-x = 126

thank you guys!

If dotted lines form the right angle, then the area of a triangle  ABC is:    A = 8*10 / 2 

8*10/2 is 40.

1/2 base x height =    1/2 * 8 * 10 = ........ cm²

That is incorrect :(

WHAT diagram?

Not POSITIVE of this answer :

[(1)(1000) + 2 (750) + 3(200)] / 20 000 = .155            15.5 cents

Haaalpp

(11z + 87) / 2 > 49     

     solve inequalities like regular equations EXCEPT when you multiply or divide both sides by a negative, the < > reverse directions

11z+87 = 98

11z > 11

x > 1

You try the second one !