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dimaraw [331]
3 years ago
12

I don't understand these questions, could someone please help??

Mathematics
1 answer:
Vlad [161]3 years ago
8 0

Answer:

1. 1. c=75 b=105 d=105

1. 2. b=104 a=76 c=76

2. 1. c=62 b=118 d=118

2. 2. d= 120 a=60 c=60

4. 1. a= 90 b= 45

4. 2. c=90 b=15

I do not know the last one.

Step-by-step explanation:

You do the first four equations by knowing that the number that you do know across from it is going to be the same. Then you add them and subtract it from 360 and multiply that number by 2 and get the number for the other spots.

Four the 4 questions, you know that the box in the conure means that it is 90, so whatever other number you know plus 90 minces 180 is the number for b.

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Two bowlers bowl the following number of strikes in 9 games
ehidna [41]
First, let's calculate the mean and the mean absolute deviation of the first bowler.

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Mean = (Sum of all data)/(Number of data points) = (8+5+5+6+8+7+4+7+6)/9
<em>Mean = 6.222</em>
Mean absolute deviation or MAD = [</span>∑(|Data Point - Mean|]/Number of Data Points
MAD = [|8 - 6.222| + |5 - 6.222| + |5 - 6.222| + |6 - 6.222| + |8 - 6.222| + |7 - 6.222| + |4 - 6.222| + |7 - 6.222| + |6 - 6.222|]/9
<em>MAD = 1.136</em>

SECOND BOWLER: <span>10,6,8,8,5,5,6,8,9
</span>Mean = (Sum of all data)/(Number of data points) = (<span>10+6+8+8+5+5+6+8+9</span>)/9
<em>Mean = 7.222</em>
Mean absolute deviation or MAD = [∑(|Data Point - Mean|]/Number of Data Points
MAD = [|10 - 7.222| + |6 - 7.222| + |8 - 7.222| + |8 - 7.222| + |5 - 7.222| + |5 - 7.222| + |6 - 7.222| + |8 - 7.222| + |9 - 7.222|]/9
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The mean absolute deviation represents the average distance of each data to the mean. Thus, the lesser the value of the MAD is, the more consistent is the data to the mean. <em>B</em><em>etween the two, the first bowler is more consistent.</em>

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3 years ago
Jada rode her bike at a constant speed for 3 hours. During that time, she traveled 7.2 miles. What was Jada's riding speed?
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Answer: 2.4 miles per hour

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or another way you could do this is do 2.4 x 3=7.2

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Answer:

x=9

Step-by-step explanation:

We can use similar triangles and ratios.  Put the small triangle side over the large triangle side.

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We can cross multiply to solve

9 * (3x-20+56) = (72+9) * (3x-20)

Simplify

9*(3x+36) = 81*(3x-20)

Distribute

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Subtract 27x from each side

27x-27x +324 = 243x-27x -1620

324 = 216x-1620

Add 1620 to each side

324+1620 = 216x

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Divide each side by 216

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