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Llana [10]
3 years ago
11

Jan age is 3 less than the twice triss agethe sum of thier ages is 30

Mathematics
1 answer:
tresset_1 [31]3 years ago
3 0
Jan is 19, Triss is 11.
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Inferential statistics allow you to decide whether a difference between the experimental and the control group is due to:_______
den301095 [7]

Answer:

Option (A)

Step-by-step explanation:

There are 2 main branches of statistics. They are:

1. Descriptive Statistics

2. Inferential Statistics

Descriptive statistics describes the characteristics of observed subjects or items while Inferential statistics makes inferences, based on given or derived data.

Inferential Statistics allow you to decide whether a difference between the experimental group and control group is due to <u>manipulation or chance.</u>

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The Experimental group is the group that an effect is tested on while the Control group is the group that is left untested or uninfluenced. Inferential statistics allow you to decide whether a difference between these 2 groups is due to

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5 0
4 years ago
4x²+4x-24 step by step
kaheart [24]

Answer:

4(x-2)(x+3)

  1. Factor a GCF from the expression, if possible.
  2. Factor a Trinomial, if possible.
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Please Mark Brainliest If This Helped!

4 0
2 years ago
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How do I solve this ​
timurjin [86]

Answer:

4 hours

Step-by-step explanation:

120-72=48

48÷12=4

8 0
3 years ago
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What is the height of the trapezoid if the Area = 26 un²?
Vladimir79 [104]

Answer:4

Step-by-step explanation:

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7 0
3 years ago
The following picture is a square pyramid where DE=8 cm and m∠ADE=60°.
mr_godi [17]

Answer:

131 cm

Step-by-step explanation:

formula for surface area of pyramid is

S = (1/3)Bh

but the base ia a square, so B = x^{2}

S = (1/3)x^{2} h

the pic shows h = 8

but we don't know x

do SohCahToa

sin60 = x/8

x = 8sin60

x = 6.92820323 or 7

plug in numbers

S = (1/3)7^{2}8

S = 392/3

S = 130.6666667 or 131 cm

5 0
3 years ago
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