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tester [92]
3 years ago
7

Help with 7 B and C plz

Mathematics
1 answer:
Tema [17]3 years ago
6 0
It says all sides and angles are equal so each square is worth 1 so
B ) each side is 3 since you can see the top side takes up 3 squares so to find the perimeter you add 3 6 times or 6×3=18 perimeter is 18
C) draw a line horizonaly threw the points that form an angle (1.5,2.5) and (7.5,2.5) this will give you a 4 sided polygon (trapizoid) it said one base is double the other so if one base (the top side) is 3 the bottom base the line you drew would be 6
Since you know all the outside sides are 3 you add 3 +3+3+6 to figure out the perimeter of the polygon the perimeter of the polygon is 15
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Charra [1.4K]
<h2><em>d≈1.73cm</em></h2><h2><em>Have a nice day </em></h2>
8 0
3 years ago
Read 2 more answers
The task I need explaining is: how to show that an estimate of the mean time spent on homework is 64.8 minutes. Thanks!
xenn [34]
It's just an estimate.  There's no telling how close it is.

To estimate using just the information in the table,
ASSUME that the average of all the students in each
slot is the average time of that slot.

I know that's confusing.  I can't think of a better way to say it,
so here are two examples of what I mean.  Look at the table:

-- 6 students said that they spent between 0 and 30 minutes.
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-- 21 students said that they spent between 60 and 90 minutes.
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So, when you add up the times for all 50 students, you'll have

 (6 x 15 min) + (14 x 45 min) + (21 x 75min) + (9 x 105 min) =

When you total up all those times, divide it by 50 to estimate
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Remember ... it's only an estimate.
If the first group had 1 student that spent 2 minutes, and
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5 0
3 years ago
Determine how many terms of the following convergent series must be summed to be sure that the remainder is less than 10 Supersc
algol13

Answer:

You need to sum at least 5000 terms

Step-by-step explanation:

Remember what the estimation theorem for alternating series says.

Given a series

s = \sum\limits_{n=0}^{\infty} (-1)^n a_n

An upper bound for the error of the series R_n  is a_{n+1} so

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For this case you want

\frac{1}{2n+1}  \leq \frac{1}{10^4}\\10^4 \leq 2n+1\\(10^4-1 )/2 \leq n

(10^4-1 )/2 is approximately 5000. So you must sum at least 5000 terms.

5 0
3 years ago
You need to find x with midpoint..... I think ​
stiv31 [10]

Answer:

I think that answer would be 6.

Step-by-step explanation:

If you think about what they are telling you, you will see that XY is a straight line. If the coordinates of y are given and the x is 0, then the midpoint is 3 units away. Midpoint makes the length divided equal so i would add three to the midpoint's x value to get 6. Comment if you have trouble following:)

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3 years ago
What is the slope of a line that is parallel to 3x - 4 = 8y + 1
Verizon [17]

You can use Desmos graphing calculator

6 0
3 years ago
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