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Lorico [155]
2 years ago
12

5 students participated in a push-up competition.

Mathematics
1 answer:
Wittaler [7]2 years ago
4 0

Answer: 9

Step-by-step explanation:

Formula : Mean = \dfrac{\text{Sum of observations}}{\text{Number of observaions}}

Given: 5 students participated in a push-up competition.

The amount of push-ups each student completed is listed: 12, 7, 10, 11,5.

Mean = \dfrac{12+7+10+77+5}{5}

=\dfrac{45}{5}=9

Hence, the mean number of push-ups = 9

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5 pounds is how many ounces
chubhunter [2.5K]

Answer:

80 ounces

Step-by-step explanation:

There are 16 ounces in a pound. So to convert from pounds to ounces, you multiply 5 by 16, which is 80.

4 0
3 years ago
A pile of coins, consisting of nickels, dimes, and quarters, is worth $4.55. There are 4 more dimes than nickels and 3 quarters
frozen [14]
Fun

n=number of nickles
q=number of quarters
d=number of dimes


4 more dmes than nickles, 3 more quarters than dimes
d+4=n
q=3+d

total value is 455 cents
10d+5n+25q=455
divide both sides by 5 to simplify
2d+n+5q=91

now we convert all to one coin
q=3+d and n+4=d
subsitute 3+d for q and n+4 for d

2(n+4)+n+5(3+d)=91
2(n+4)+n+5(3+n+4)=91
2(n+4)+n+5(n+7)=91
2n+8+n+5n+35=91
8n+43=91
minus 43 both sides
8n=48
divide both sides by 8
n=6

sub back
n+4=d
6+4=d
10=d

q=3+d
q=3+10
q=13


6 nickles
10 dimes
13 quarters
5 0
3 years ago
Use the relationship between the angles in the figure to answer the question.
Andrej [43]
X + 52 = 180 b is the answer
4 0
2 years ago
Read 2 more answers
A dinosaur fossil is 91,910,000 years old. how can you express this age in scientific notation with the highest level of precisi
Harlamova29_29 [7]
<span>91,910,000 years
</span><span>9.191 x 10^7
answer is c

</span>
4 0
3 years ago
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A purse contains 21 coins consisting of nickels and dimes. Find the number of coins of each kind if the total value is $1.65.
MaRussiya [10]

the value of the dimes is 10(21 - 5)

hope this helps

4 0
3 years ago
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