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saveliy_v [14]
3 years ago
9

In Mrs. Robinson's class, there are 16 girls and 14 boys. The mean of the girls' heights is 63.7 inches, and the mean of the boy

s' heights is 65.4 inches. What is the mean of the heights of all 30 students? Express your answer as a decimal to the near tenth.
Mathematics
1 answer:
Elodia [21]3 years ago
8 0

Answer: 64.6

Step-by-step explanation:

If you add up 63.7 and 65.4 and then divide by 2 you get 64.6.

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David’s bowling score is 5 less than 3 times Aaron’s score. The sum of their score is 215. Find the score of each student. Write
xenn [34]

Answer:

David's score= 160 ;  Aaron's score = 55

Step-by-step explanation:

let Aaron's score be 'x'.

so, David's score will be 3x - 5

(3x - 5) + x = 215

3x + x - 5 = 215

4x = 215 + 5

4x = 220

x = 220/4

x = 55

therefore, Aaron's score = 55

David's score is (3x - 5) = (3*55) - 5 = 165 - 5 = 160

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Whats the square root of 826 also looking for a minecraft girI needs to be 15 or older
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Answer:

28.740,

Step-by-step explanation:

7 0
3 years ago
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hilary wants to fill a mini cake pan with batter to make a mini cake for philip's party. the cake pan is 4.0 inches long, 9.0 in
igomit [66]
Simple,

4x9x2.2 = volume = 79.2 cubic centimeters

79.2/1000 = 0.0792 litres

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6 0
3 years ago
Can an acute and obtuse angle be supplementary? Draw a figure showing supplementary angles? ​
uysha [10]
Yes, I will list acute first (<90) and obtuse second (>90) and they need to add to 180

10 and 170
20 and 160
30 and 150
40 and 140
50 and 130
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8 0
3 years ago
The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce. What should be a fair price for each cake?
aleksklad [387]

Answer:

price = x * 0.2

or

price = x * 0.454 * 0.2

Step-by-step explanation:

In this case we must know either the mass of the cake or its volume.

Given the case that we know the mass of the cake, it would be:

price = x * 0.2

where x is the mass of the cake in ounces, that is to say if for example a cake has a mass of 10 ounces, it would be:

price = 10 * 0.2 = 2

which means that each cake costs $ 2

Given the case of the volume, we must first multiply the density by this volume in order to calculate the mass and finally the price.

price = x * 0.454 * 0.2

where x is the volume of the cake in cubic inches, if for example the volume is 10 cubic inches it would be:

price = 10 * 0.454 * 0.2 = 0.908

which means that each cake costs $ 0.9

5 0
3 years ago
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