Ask question

Ask question

All categories

4 years ago

7

How to do question 4?

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!

You might be interested in

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

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