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photoshop1234 [79]
2 years ago
6

Which of the following is a proportion? 9/12 = 8/10 3/4 = 9/12 6/8 = 8/12 12/18 = 19/16

Mathematics
1 answer:
goblinko [34]2 years ago
4 0

Answer:

3/4=9/12

Step-by-step explanation:

3x3= 9

4x3= 12

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What is 'a)' on question 4?
Nikolay [14]
A = 4b

b = 7

a = 28

7 * 4 = 28





3 0
2 years ago
I need help with this one
Zarrin [17]

Answer:

B,D

Step-by-step explanation:

The small number is always the bigger one in negatives because it is closer to 0 in a timeline

_-6_-5_-4_-3_-2_-1_0_1_2_3_4_5_6

5 0
2 years ago
Help please, Mathematics! If there's a formula include that too, please
mario62 [17]

Answer:

24 Combinations Total

Step-by-step explanation:

METHOD 1 (no advanced math skills needed)

i. Number the friends: a, b, c, and d

ii. List all possible combinations...

  1. a b c d
  2. a b d c
  3. a c b d
  4. a c d b
  5. a d b c
  6. <u>a d c b</u>
  7. b a c d
  8. b a d c
  9. b c a d
  10. b c d a
  11. b d a c
  12. <u>b d c a</u>
  13. c a b d
  14. c a d b
  15. c b a d
  16. c b d a
  17. c d a b
  18. <u>c d b a</u>
  19. d a b c
  20. d a c b
  21. d b a c
  22. d b c a
  23. d c a b
  24. <u>d c b a</u>

To speed up the process instead of sitting here and listing 24 combinations, after two sections you can see that with friend "a" sitting all the way at the left there are six combinations and the same goes for friend "b". You can then multiply 6 (number of combinations with that friend <em>first</em>) and 4 (friends) to get 24.

METHOD 2

n! means the total number for permutations calculation (1 x 2 x ... until you reach <u><em>n</em></u><em> </em>) = 24

6 0
3 years ago
If 45 cookies serve 15 students how many cookies will serve 30 students
Mamont248 [21]

Answer:

90 cookies would be served to 30 students.

Step-by-step explanation:

First, simplify the first ratio given to us.

45/15 = 3/1

Every student is given 3 cookies. You are now serving 30 students. To solve, multiply 3 with 30.

3 x 30 = 90

90 cookies would be served to 30 students.

~

5 0
3 years ago
Read 2 more answers
Select the correct answer. Which line has a y-intercept of 2 and an x-intercept of -3? W. X. Y. Z. A. W B. X C. Y D. Z
oksano4ka [1.4K]

Answer:

y = -\frac{2}{3}x + 2

Step-by-step explanation:

The question is incomplete, as the graphs or equations of the lines are not given.

However, I will give a general explanation of calculating both intercepts

A linear equation is of the form:

y = mx + b

Where:

b \to y intercept

So, the equation

y = -\frac{2}{3}x + 2

has 2 as its y-intercept

Set y to 0, to calculate the x-intercept

0 = -\frac{2}{3}x + 2

Collect like terms

\frac{2}{3}x = 2

Multiply by 3/2

x = 2 * \frac{3}{2}

x = 3

So, the equation with the required criteria is:

y = -\frac{2}{3}x + 2

8 0
2 years ago
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