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GarryVolchara [31]
2 years ago
15

|(-10)+25)|= PLZZ HELP AND THANK YOU!!!<3

Mathematics
1 answer:
NNADVOKAT [17]2 years ago
6 0
-15 because there is ten before 25
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How do you know the correct order in which to evaluate algebraic expressions
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Use the Order of Operations.

1 Parentheses
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4 Division
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2 years ago
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How many places after the decimal point does the equivalent decimal have if: the denominator of the fraction is 100?​
Natali [406]

Answer:

2 places after the decimal point.

Step-by-step explanation:

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3 years ago
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For the function below, give the ordered pair if x = 2 f(x)=-3(x+2)2+9
Kay [80]

Answer:

(2, -39)

Step-by-step explanation:

f(x)=-3(x+2)^2+9

f(2)=-3(2+2)^2+9

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2 years ago
What am I doing wrong?
Angelina_Jolie [31]
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3 0
3 years ago
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea
zheka24 [161]

Answer:

$301 - $397

Step-by-step explanation:

Using the Empirical rule

1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .

2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

3)99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .

From the above question,

Mean = 349 , standard deviation = 24.

Confidence interval = 95%

Using 2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

μ – 2σ

= 349 - 2(24)

= 349 - 48

= 301

μ + 2σ

349 + 2(24)

= 349 + 48

= 397

Therefore, according to the standard deviation rule, approximately 95% of the students spent between $301 and $397 on textbooks in a semester.

8 0
3 years ago
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