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Vikki [24]
2 years ago
11

Jacob is asked to solve the follow problem: "Kayla is 9 years older than twice Hannah’s age. If the difference in their ages is

16, how old is Kayla? How old is Hannah?" Jacob finds Hannah’s age to be 16 years. Is he correct? Explain
Mathematics
1 answer:
tatiyna2 years ago
6 0

Answer:

Step-by-step explanation:

k = 2h+9

h+16=k

h+16=2h+9

-h = -7

h = 7

hannah is 7 and kayla is 23

jacob is wrong because if u do 16*2+7 it’s 39 and 39-16 does not equal 16

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Answer:

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Step-by-step explanation:

Given that the bag contains black and red marbles.

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Let us have a look at the formula for probability of an event E, which can be observed as:

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P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }

Now, the marble chosen at first is replaced.

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Now, the <em>required probability</em> can be found as:

P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }

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3 years ago
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Answer:

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Step-by-step explanation:

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