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Inessa05 [86]
2 years ago
15

ALL MY QUESTIONS GETTING IGNORED PLS HELP

Mathematics
1 answer:
Novosadov [1.4K]2 years ago
4 0

Answer:

x=9

Step-by-step explanation:

a scale drawing means all the sides are multiplied by the same amount. to find this amount, you can divide the larger side by the bigger side by the smaller side.

15/5 = 3

12/4 = 3

therefore the scale factor is 3. to get the value of x, multiply the value of the third side by 3.

3*3=9

x=9

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musickatia [10]

Answer:

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Step-by-step explanation:

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(17-9)=8 . 8-4 =4

so your answer is correct

6 0
3 years ago
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A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan
Mademuasel [1]

Answer: H_0:\mu=40

H_0:\neq40

Step-by-step explanation:

  • A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
  • An alternative hypothesis says that there is a statistical significance  between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. \mu=40, since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

\mu\neq40

⇒ Null Hypothesis : H_0:\mu=40

Alternative hypothesis : H_0:\neq40

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3 years ago
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When Marla rounded 19.95 to the nearest tenth, she found the number changed to 20.is this correct
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The price of a notebook was
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