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larisa [96]
3 years ago
14

Tell weather the two rates form a proportion. help

Mathematics
1 answer:
Sindrei [870]3 years ago
6 0
7/9 = 42/54...when 42/54 reduces, it becomes 7/9...so this is proportional because proportions are nothing but equivalent fractions.

u could also check it this way...
12/21 = 15/24
cross multiply
(21)(15) = (12)(24)
315 = 288.....these do not equal and are therefore, not proportionate

440/4 = 300/3
110 = 100....not equal, so not proportionate

120/5 = 88/4
24 = 22.....not proportionate

66/82 = 99/123
0.804 = 0.804.......these are proportional

68/172 = 43/123
0.395 = 0.349......nope, not proportional




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3 years ago
Plz help me.. 50 points if you answer all ill give brainliest​
antoniya [11.8K]

1) 1/4+1/2

We need to convert the fractions.

1/4 is fine.

1 x 2=2

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1/4+2/4=3/4

2) a+a

a can be written as 1a.

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I can't see photos and he doesn't know 3 or 4 and i'm confused on 5.

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3 years ago
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The measures of two pairs of corresponding angles of two triangles are 24 degrees and 55 degrees. Explain why the two triangles
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Answer:

Are the two triangles below similar?

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