3 years ago

Please help! High school math

Mathematics

1 answer:

Yanka [14]3 years ago

8 0

Answer:sorry people are steling my points by answering my questions with links. :(

Step-by-step explanation:

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The temperature has been going down at a constant rate. In 3 hours it went down 15 degrees. Which expression best shows the temp

Degger [83]

15/3=5
The temperature goes down 5 degrees in 1 hour.

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3 years ago

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victus00 [196]

Answer:

The answer is B.

Step-by-step explanation:

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As notas de dois alunos X e Y estão representadas no quadro abaixo. Por meio da variância, qual deles apresentou ser o mais regu

Reil [10]

Answer:

Aluno X

Step-by-step explanation:

A nota média para os alunos X e Y são, respectivamente:

$X_m=\frac{5+3+5+7}{4}=5 \\Y_m=\frac{4+9+4+3}{4}=5$

A variância é definida pela seguinte expressão:

$V=\frac{\sum(X_i-X_m)^2}{n-1}$

Onde n é o numero de termos, neste caso, n = 4.

As variâncias para cada aluno são:

$V_x=\frac{(5-5)^2+(3-5)^2+(5-5)^2+(7-5)^2}{4-1} \\V_x= 2.7\\V_y=\frac{(4-5)^2+(9-5)^2+(4-5)^2+(3-5)^2}{4-1} \\V_y= 7.3$

O aluno X apresentou uma variância menor do que o aluno Y em suas notas e, portanto, apresentou ser o mais regular.

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3 years ago

Need help ASAP it’s due at 12! The screen couldn’t fit, this is the clearest pic I can get! If anyone can help it will be greatl

Tamiku [17]

Step-by-step explanation:

Since ,

Money lended =$400

Intetest =27.74%

Therefore,

Intetrst=p×r×t/100,if interested monthly

=400×27.74×1/100(interested monthly)

=4×27.74

=$110.96

Interest=p×r×t/100×1/12,if interested anually

=400×27.74×1/100/12

=110.96/12

=$9.24 or it will be $110.96 if it is interested anuaaly..

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3 years ago

What is the value of x?

Harlamova29_29 [7]

Answer:

if x is by itself it's 1

Step-by-step explanation:

If a question as x=10 x is equal to the number

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3 years ago