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Naya [18.7K]
2 years ago
13

2. The ratio of boys to girls in a classroom is 2 to 3. If there are 18 boys in the classroom, how many

Mathematics
2 answers:
andre [41]2 years ago
8 0

Answer:

27 girls

Step-by-step explanation:

boys 2 : 3 girls

18: x

18×3= 54:2x

54÷2= 27

wariber [46]2 years ago
3 0

Answer:

27  girls

Step-by-step explanation:

boys  2/5  = 0.4  (40%) = 18

girls  3/5 = 0.6  (60%)= x

   40%----------18

   60%-----------x

Cross multiplication

      40x = 60x18

40x = 1080

x=27

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Akimi4 [234]

Answer:

a_8=38

Step-by-step explanation:

<u>Recursive sequence </u>

In a recursive sequence formula, each term a_n is computed as a function of one or more previous terms. In the formula

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We can see a_{n-1} is the previous term. It means we need a_7 to be able to compute a_8. But we also need a_6 to compute a_7 and so on until some known data is reached. The question provides five terms, a_5=23.

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3 years ago
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Step-by-step explanation:

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Which equation represents y = −x2 + 6x + 7 in vertex form? y = −(x + 3)2 + 4 y = −(x − 3)2 + 10 y = −(x + 3)2 + 2 y = −(x − 3)2
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3 years ago
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MrRissso [65]

Answer:

Step-by-step explanation:

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