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azamat
4 years ago
7

How to do question 4?

Mathematics
1 answer:
Nutka1998 [239]4 years ago
6 0
Marie states that any integer greater than 4 will always get an even number of factors.

This can be proven wrong by (for example) 12.

12 has these factors:

1 x 12
2 x 6
3 x 4

12 has an ODD number of factor pairs.

Another example is 28.

28:
1 x 28
2 x 14
4 x 7

28 has an odd number of factor pairs.

I hope this helps!
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How do I solve this?
Sindrei [870]

Answer:

Set up the problem like a ratio by using fractions.

Step-by-step explanation:

For every 3oz it costs $10, and you're trying to find out the amount you can get for $15.

If you set up 3/10 = x/15, you can solve for x by multiplying 3 and 15 together, giving you 45. After that, you divide 45 by 10 and you will get the answer 4.5

5 0
3 years ago
Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows? (1) The farm has more than t
mario62 [17]

Answer:

Step-by-step explanation:

\frac{2}{3}of total= either cow or pigs

\frac{2}{3}of 60=

\frac{2}{3} X 60=40

Either pigs or cow = 40

(1) Let number of pigs be x

   then number of cows >twice of pigs = 2x

    number of pigs + number of cows  = 40

                number of cows = 40 -x

                   40-x > 2x

                   40 > 3x

               x < \frac{40}{3}

               x < 12.33

               nearest integral number is 12

               so its 12

              so number of pigs will be 12 so that number of cows = 40 -12 = 28

           which is more than twice of number of pigs

             28 > 2( 12)  = 24

     (2)   number of pigs + number of cows = 40

        for x>12

               number of cows = 40 -x

                  x > 12

                 -x < -12

             adding 40 both sides

            40-x < 40-12

           number of cows <28

7 0
4 years ago
10 of 10
lorasvet [3.4K]

Answer:

49

Step-by-step explanation:

The best way is to answer the question in reverse.

14*4

=56

56-7

=49

double check your answers too!

49+7

=56

56/4

=14

8 0
3 years ago
I am in need of assistance.
Alex_Xolod [135]

Answer:

A. x = 6.08, x = -0.58

Step-by-step explanation:

  • \displaystyle \frac{2x}{x-4}-\frac{2x-5}{x^2-10x+24}=\frac{-3}{x-6}

1. Factor the denominator.

  • \displaystyle \frac{2x}{x-4}-\frac{2x-5}{(x-6)(x-4)}=\frac{-3}{x-6}

2. Multiply the leftmost fraction by (x-6)/(x-6) to get common denominators.

  • \displaystyle \Big ( \frac{x-6}{x-6} \Big ) \frac{2x}{x-4}-\frac{2x-5}{(x-6)(x-4)}=\frac{-3}{x-6}

3. Simplify.

  • \displaystyle \frac{2x^2-12x}{(x-4)(x-6)}-\frac{2x-5}{(x-6)(x-4)}=\frac{-3}{x-6}  

4. Combine like terms.

  • \displaystyle \frac{2x^2-14x+5}{(x-4)(x-6)}=\frac{-3}{x-6}  

5. Multiply the right side of the equation by (x-4)/(x-4).

  • \displaystyle \frac{2x^2-14x+5}{(x-4)(x-6)}=\frac{-3}{x-6} \Big ( \frac{x-4}{x-4}  \Big )  

6. Simplify.

  • \displaystyle \frac{2x^2-14x+5}{(x-4)(x-6)}=\frac{-3x+12}{(x-6)(x-4)}

7. "Cancel" out the denominators because they are equivalent.

  • 2x^2-14x+5=-3x+12

8. Set the equation equal to 0.

  • 2x^2-11x-7=0

Quadratic formula:

  • \displaystyle x = \frac{-b\pm \sqrt{b^2-4ac} }{2a}  

9. Factor using the quadratic formula.

  • \displaystyle x = \frac{-(-11)\pm \sqrt{(-11)^2-4(2)(-7)} }{2(2)}

10. Multiply and simplify.

  • \displaystyle x = \frac{11 \pm \sqrt{177} }{4}

11. Plug this into your calculator and solve for x.

  • x=6.07603367 \approx 6.08
  • x=-0.57603367 \approx -0.58

The correct answer is A. x = 6.08, x = -0.58.

8 0
3 years ago
Which statement is true ?
podryga [215]

Answer:

d

Step-by-step explanation:

plan 2 grows exponentially so it grows at a faster rate than plan 1, even though plan 1 starts with 100 members

7 0
2 years ago
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