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topjm [15]
3 years ago
12

Write two ratios equivalent to 24 : 9. 1. 12 : 5, 48 : 18, 2. 8 : 3, 72 : 30,

Mathematics
1 answer:
Mars2501 [29]3 years ago
5 0

Answer:

avcdefghijklmnopqrstuvwxyz

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Keiko determined that the coordinate points (–4, 0), (–3, –1), and (2, –6) are solutions to the following system. y = − x − 4 y
Bess [88]

Answer:

only (-4,0) is a reasonable solution.

Step-by-step explanation:

In order to see which ones are reasonable we need to apply the points to the system and check if they make both equations valid at the same time.

y = -x - 4

y = x² + x - 12

For (-4, 0):

0 = -(-4) - 4 -> 0 = 4 -4 -> 0 = 0 (valid)

0 = (-4)² - 4 - 12 -> 0 =  16 - 16 -> 0 = 0 (valid)

For (-3, -1):

-1 = -(-3) -4 -> -1 = 3 -4 -> -1 = -1 (valid)

-1 = (-3)² -1 - 12 -> -1 = 9 -13 -> -1 = -4 (invalid)

For (2, -6):

2 = -(-6) - 4 -> 2 = 6 -4 -> 2 = 2 (valid)

2 = (-6)² -6 -12 -> 2 = 36 -18 -> 2 = 18 (invalid)

Therefore only (-4,0) is a reasonable solution.

7 0
3 years ago
What number equals four fifths of the average of 18 and 42
KATRIN_1 [288]

Answer:

18 + 42 = 60

60 / 2 = 30

4/5 of 30 = 24


Hope this helps Buddy!

Please mark me brainliest!


~Courtney


4 0
3 years ago
Read 2 more answers
Are these ratios equivalent?
Kitty [74]

Answer:

I don't think they are

An equivalent ratio for 5:20 is 10:40

An equivalent ratio for 3:16 is 6:32

You have to multiply both numbers by the same numerical, I used 2

7 0
3 years ago
Read 2 more answers
Windsor the dog ate 4 3/4 snack bones each day for a week . How many bones did Windsor eat that week ?
oksano4ka [1.4K]

Answer:

4*3/4* 7=21 bones per week

3 0
3 years ago
Read 2 more answers
Instructions: Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Morgarella [4.7K]

Answer:

y = 3x - 13................slope= 3, point= (5,2)

y = 3x + 11.................slope= 3, point= (2,17)

3y = x + 11................slope= 1/3, point= (-5,2)

3y = x - 13................slope= 1/3, point= (19,2)

Step-by-step explanation:

To match each equation to its slope and point, remember that an equation in y = mx + b has slope m. The point must also satisfy or make true the equation when substituted for (x,y).

y=3x-13  has slope 3. The point (2,17) make it false. But (5,2) makes it true.

17 = 3(2) - 13                 2 = 3(5) - 13

17 = 6-13                       2 = 15 - 13

17 = - 7  False              2 = 2 True

y=3x+11  has slope 3. This means (2,17) must be true.

3y=x+11  can be converted to y = 1/3x + 11/3. It has slope 1/3. Test each point.

2= 1/3(19) + 11/3                 -2 = 1/3(17) + 11/3        2 = 1/3(-5) + 11/3

2 = 19/3 + 11/3                    -2 = 17/3 + 11/3          2 = -5/3 + 11/3

False                                    False                        2 = 6/3    True

3y=x-13 can be converted to y = 1/3x - 13/3. It has slope 1/3. Test each remaining point.

2= 1/3(19) - 13/3                 -2 = 1/3(17) - 13/3        

2 = 19/3 - 13/3                    -2 = 17/3 - 13/3          

2 = 6/3                                -2 = 4/3

True                                   False                        

7 0
3 years ago
Read 2 more answers
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