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choli [55]
3 years ago
8

Help finding mean of data set A and data set B?

Mathematics
1 answer:
Slav-nsk [51]3 years ago
3 0

Answer:

Mean of A: 5.5

Mean of B: 3

Step-by-step explanation:

Mean of A: (4 + 5 * 3 + 6 * 3 + 7) / 8 = 5.5

Mean of B: (2 * 3 + 3 * 3 + 4 * 3) / 9 = 3

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Keisha, Felipe, and Manuel sent a total of 100 text messages during the weekend. Keisha sent 8 more messages than Felipe. Manuel
Karo-lina-s [1.5K]

Answer:

Felipe = 23 messages

Keisha = 31 messages

Manuel = 46 messages

Step-by-step explanation:

Keisha = K

Felipe = F

Manuel = M

=> There are a total of 100 messages.

=> K sent 8 +F => K = 8 + F

=> M sent 2 * F => M = 2F

=> F = F

=> 8 + F + 2F + F = 100

=> 8 + 4F = 100

=> 8 - 8 +4F = 100 -8

=> 4F = 92

=> 4F/4 = 92/4

=> F = 23

So, Felipe = 23 messages.

      Keisha = 8 + F = 8 + 23 = 31 messages.

      Manuel = 2F = 2* 23 = 46 messages.

46 + 31 + 23 = 77 + 23 = 100 messages.

So, the answer is correct.

7 0
2 years ago
A recipie needs 5/8 cups of sugar. What percent of a whole cup is that?
katen-ka-za [31]

Answer: 62.5 percent

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Ayodele received a raise in her hourly pay, from $24.50 to $25.48. Find the percent change.
Sveta_85 [38]

Answer:

4%

Step-by-step explanation:

The raise in her hourly pay is

$25.48-$24.50 =$0.98

Cross multiplying (rule of three)

24.50------100%

0.98--------x%

and so, x= 0.98*100/24.5 = 4%

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3 years ago
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How many board feet in a <br><br>3" x 3 x 12"​
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172 that’s all just add much
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Explanation:

Statements are numbered; reasons are in italics.

1. ABCD is a parallelogram with AB≅CD and BC≅AD. <em>Given; definition of a parallelogram</em>.

2. Diagonal AC ≅ diagonal CA. <em>Reflexive property of congruence</em>.

3. ΔABC ≅ ΔCDA. <em>SSS congruence postulate</em>.

4. ∠B ≅ ∠D. <em>CPCTC</em>. (Opposite angles B and D are congruent.)

5. Diagonal BD ≅ diagonal DB. <em>Reflexive property of congruence</em>.

6. ΔABD ≅ ΔCDB. <em>SSS congruence postulate</em>.

7. ∠A ≅ ∠C. <em>CPCTC</em>. (Opposite angles A and C are congruent.)

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3 years ago
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