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Masja [62]
3 years ago
12

Please help me and I'm not sure if the answer I picked is correct could you please check

Mathematics
1 answer:
vovangra [49]3 years ago
3 0
It is dependant, what Beth chooses depends of what tom chooses first
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Provide an appropriate response.
oksian1 [2.3K]
You don't even have to look up the definition of 'standard deviation'.  You only
have to remember that 'smaller standard deviation' means 'less spread-out'.

First, let's find the mean (average).  It's not supposed to change:

1/7th of (65 + 71 + 77 + 80 + 82 + 90 + 96) = 561/7 = <u>80 and 1/7</u> .

Now, just pick 7 scores that total 561 and are all bunched up.

The easiest way would be 80, 80, 80, 80, 80, 80, 81 .
But that's so easy that it feels like cheating.

Let's say <u>77, 78, 79, 80, 81, 82, and 84</u> .
8 0
3 years ago
If a polynomial has one root in the form a+√b , it has a second root in the form of a_√b
Elina [12.6K]

Answer:

Step-by-step explanation:

a+√b

a-√b

3 0
2 years ago
Tommy has 5 jars of marbles each jar is 2/3
tatyana61 [14]

Answer:

7.5

Step-by-step explanation: First divided 5 divided by 2/3 and then you will get 7.5 can I get my brainllest

8 0
2 years ago
Read 2 more answers
Will give brainliest <br> A ?<br> B?<br> C ?
dolphi86 [110]

Answer:

A: 180°         B: 360°         C: 540°

Step-by-step explanation:

A: The measures of interior angles of a triangle sum to 180°. Since figure ABC is a triangle, the interior angles of figure ABC sum to 180°.

B: We can see the quadrilateral ACDE is a trapezoid. If you can see, the trapezoid can be split into two triangles if you connect points C and E. As U mentioned before, the measures of interior angles of a triangle sum to 180°. Since we know figure ACDE can be split into <u>two triangles</u> we have to do: 180x2 which is 360°.

C: Now that we know the Pentagon ABCDE can be split into 3 triangles(1 from figure ABC and 2 from figure ACDE), we have to multiply 180 by 3 because like I mentioned before, the measures of interior angles of a triangle sum to 180°. So, 180x3=540°.

5 0
2 years ago
Read 2 more answers
To avoid a storm a passenger jet pilot decendents 0.44 mile in 0.8 minute.what was the planes average change in altitude per min
Lemur [1.5K]
.44/.8=×/1
×=.55
..................................
8 0
3 years ago
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