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Tanya [424]
3 years ago
12

The scores of quizzes from 10 students is sampled. The scores, out of 20, are 12, 14, 14, 9, 17, 16, 18, 10, 8, 16. What is the

best estimate of the population mean for quiz scores among students?
Mathematics
1 answer:
coldgirl [10]3 years ago
6 0

Answer:18

Step-by-step explanation:

You might be interested in
A farmer sells 8.5 kilograms of apples and pears at the farmer's market. 4 5 of this weight is apples, and the rest is pears. Ho
slavikrds [6]

Answer:

your answer gonna be $13 dollars

6 0
2 years ago
A bicycle pedal is pushed straight downwards by a foot with a 11 Newton force. The shaft of the pedal is 20 cm long. If the shaf
galben [10]

Answer: 1.1 Nm

Step-by-step explanation:

The formula for torque is T = r · F · sin θ

where θ = π/6, r = 20 cm = 0.2 m, F = 11 N

formula for converting radians to degrees is 1 rad × 180/π = 57.296°

θ = π/6 · 180/π = 30°

Substituting r into the formula for torque, we have

T = 0.2 x 11 x sin 30° = 0.2 x 11 x 0.5

T = 1.1 Nm

3 0
3 years ago
2x-y<-3
timama [110]

Answer:

y > 2x + 3

Step-by-step explanation:

Okay, first let's simplify the equation by understanding the form.

y = mx + b is the form.

Currently we have 2x - y < -3, So we can subtract 2x on both sides to get

-y < -2x - 3

Let's multiply each term by -1 to get

y < 2x + 3, but wait! We have to flip the sign!

The answer is :

y > 2x + 3

5 0
2 years ago
On a certain hot​ summer's day, 166 people used the public swimming pool. The daily prices are $1.50 for children and $2.00 for
Shalnov [3]

Answer:

134 children and 32 adults.

Step-by-step explanation:

This solution is based on guess and check, I don't know if you know this method but it's used all the time for questions like these.

Or the faster way called assumption, but it is much harder and might get careless easily.

So let's do guess and check.

Predict how much adults and children would be there.

Let's say 76 children and 90 adults.

76 x 1.50 = 114

90 x 2.00 = 180

Total for first attempt = 180 + 114 = 294

The total amount is too much, so let's lower the number of adults and increase the number of children.

Let's say 85 children and 81 adults.

85 x 1.50 = 127.5

81 x 2.00 = 162

162 + 127.5 = 289.5

Again it's too much.

Let's make it 120 children and 46 adults.

120 x 1.50 = 180

46 x 2.00 = 92

180 + 92 = 272

It's too much but almost there, let's make another one.

140 children and 32 adults.

140 x 1.50 = 210

32 x 2.00 = 64

Too much children, lower it down to 132 children and 34 adults.

132 x 1.50 = 198

34 x 2.00 = 68

198 + 68 = 266

As you can see we're quite close.

134 children and 32 adults.

134 x 1.50 = 201

32 x 2.00 = 64

201 + 64 = 265

So we finally got the answer.

7 0
2 years ago
Please help me with these questions
Alina [70]
1 is : d>-9
2 is: k ≥ -18
3 is: g>-1
4 is: n<-40
5 is: w ≤3
That should be correct.

7 0
3 years ago
Read 2 more answers
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