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charle [14.2K]
3 years ago
11

A small sample difference of means test requires that we can assume the variances of the two variables (for each group) are appr

oximately equal.
a. True
b. False
Mathematics
1 answer:
Serga [27]3 years ago
3 0
B. False is the right answer I believe!
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Help!! ASAP maths exam coming up what transformation is this and tell me what does it include
Yuki888 [10]

Answer:

Reflection, Triangle B is a reflection of A

Step-by-step explanation:

Reflection <em>is when we flip a figure over. </em>

Translation <em>is when we slide a figure in any direction. </em>

Rotation <em>is when we rotate a figure a certain degree around a point. </em>

Dilation <em>is when we enlarge or reduce a figure.</em>

<em />

8 0
3 years ago
Which best describes a compound such as magnesium oxide
vfiekz [6]

Answer:

D. a pure substance that is made up of different elements

Step-by-step explanation:

There are two types of pure substances: elements and compounds.

Elements are made up of only one type of atom. And compounds are pure substances, that are made up of more than one type of element. Like - magnesium oxide. It is a compound of a metal with a non-metal and is held together with ionic bonds.

4 0
4 years ago
Which of these is equivalent to the given angle?
Inga [223]

360 \°=2\pi  \\\\\dfrac{7\pi }{4} = \dfrac{\frac{7\not\pi }{\not4} \cdot \not360 \° ^{90 \° }}{2\not\pi } =\dfrac{7\cdot \not90\° ^{45\°}}{\not2} =7\cdot45\°=315\° \\\\Answer \ D.

7 0
3 years ago
PLEASE HELP
11111nata11111 [884]

Answer:

1).  The constant of variation is 7

2).  w = 6 for the given values of x and y

Step-by-step explanation:

"Varies jointly" tells us that y is a direct result of a mathematic operation involving x and w.  We will assume y is directly prorportional to x and w, in the sense that we can find a multiplicative relationship of the form y=Kxw, where K is the constant of variation.

We are given one data point:  y=-42 where x is 2 and w is -3.  Let's put those values into our trrial expression:

y=Kxw

-42=K(2)(-3)

-42 = -6K

K = 7

<h2>The expression becames  <u>y = 7xw</u></h2>

The constant of variation is 7.

The value of w for y=3 and x=(1/14) would be:

 

  y=7xw

  3 = 7*(1/14)*w

3 = (1/2)*w

<h2><u>w = 6</u></h2>
7 0
1 year ago
Read 2 more answers
the following image is a trapazoid.if XW is congruent YZ and measaure of m = 72 degrees. calculate the measure of X
AnnyKZ [126]

Answer:

opposite angle of trapezoid is supplementary

<Z+<X=180°

<X=180°-72°

<x=108°

is your answer

6 0
3 years ago
Read 2 more answers
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