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otez555 [7]
2 years ago
13

Which ratio is porportional to 18/21? A.2/3 B. 30/35 C. 36/48 D.1/3

Mathematics
1 answer:
defon2 years ago
8 0
You can solve this problem by applying the proccedure below:
 
 You have:
 
 a) 18/21=2/3
 18x3/21x2
 36≠42 (2/3 is not proportinal to 18/21).
 
 b)18/21=30/35
 18x35/21x30
 630=630  (30/35 is proportional to 18/21)
 
 c)18/21=36/48
 18x48/21x36
 864≠756  (36/48<span> is</span><span> not proportinal to 18/21)
</span> 
 d)18/21=1/3
 18x3/21x1
 54≠21  (<span> 1/3 is</span><span> not proportinal to 18/21)
</span> 
 Therefore, you can conclude that the correct option is: B.30/35
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Step-by-step explanation:

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3 years ago
If 25^x+1 = 125/5^x find the value of x
storchak [24]
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<em>x =1/3</em>

  • Step-by-step explanation:

<em>25ˣ⁺¹ = 125/5ˣ</em>

<em>5²⁽ˣ⁺¹⁾ = 5³/5ˣ</em>

<em>5²⁽ˣ⁺¹⁾ = 5³ : 5ˣ</em>

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2 years ago
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if the degrees in this triangle are truly 90-45-45, then the two unknown lengths are the same

and the pythagorean theorem holds anyways: a² + b² = c², where c is the longest side in a right triangle.

c is 16, so 16² is 256

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I wrote 2 times s because a and b are of same length

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2 years ago
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Step-by-step explanation:

From the question, we are informed that a football team has a net yardage of −28 1/3 yards on a series of plays and that the team needs a net yardage of 30 yards to get a first down.

The number of yards that they have to get on their next play to get a first down would be calculated as:

= 30 - -28 1/3

Note that minus × minus = plus

= 30 + 28 1/3

= 58 1/3 yards

7 0
2 years ago
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