I need help understanding this

Mathematics

2 answers:

vovikov84 [41]3 years ago

8 0

I'm assuming that the question's really just asking for the slopes of the straight lines that are both horizontal and vertical, as you wouldn't actually need to graph the rectangle in any way, since you know that a rectangle has two sets of parallel sides with one set of the sides longer than the other. Remember to just use your knowledge of special types of slope to figure this out.

telo118 [61]3 years ago

5 0

Well, the slope for each side is simple.

All you have to do to remember slope is rise over run.

So for example:
For Vertices E and F the Slope would be 3/9
For Vertices G to H the slope would be 3/9
For vertices G to F the slope would be 6/2
For vertices H to E the slope would be 6/2

What do you notice about slopes on opposite sides?
Answer:
( H to E,and G to F) Have the same slope
(And G to H and E to F.) Have the same slope.

What do you notice about slopes of adjacent lines?
adjacent means adjoining or next to. So can you figure this question out? Using the information above?

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nydimaria [60]

The key is Esther travelled the same distance - x - in both her morning and evening commute.

45(time she took in the morning, or p) = x
30(time she took in the evening, or q) = x

Therefore 45(p) = 30(q), or divide both sides by 5 and get 9(p) = 6(q). I know you can divide it further, but these numbers are small enough and it's not worth the time.

Since the whole trip took an hour, (p + q) = 60min, and so, p = 60-q.

Therefore 9(60-q) = 6q or 540-9q = 6q. So 540 = 15q, which makes q = 36. If q = 36, then by (p+q)=60, p (the time she took in the morning) must equal 24.

45 miles per hour, her speed in the morning, times (24/60) hours, her time, makes 18 miles travelled in the morning. If you check, 30 miles per hour times (36/60) hours also makes 18 miles in the evening.

Hope that makes a little sense. And I also hope it's right

7 0

3 years ago

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What is the formula for ANOVA

Sergio039 [100]

P = 3
n = 5
N = 15
x ¯ = 16
SST = ∑n(x−x ¯ ) 2 
SST = 5(12−16) 2 +5(16−16) 2 +11(20−16) 2 
= 160
MST = SSTp−1 
MST = 1603−1 
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SSE = ∑(n−1)S 2 
SSE = 4*4 + 4*1 + 4*16
= 84
MSE = SSEN−p 
MSE = 8415−3 
MSE = 7
F = MSTMSE 
F = 807 
= 11.429

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Andreyy89

Answer:

The answer is [B Josh, because when dividing by a power of 10, the decimal moves to the left]

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