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Lina20 [59]
3 years ago
9

The diameter of this

Mathematics
1 answer:
o-na [289]3 years ago
8 0

Answer:

The number of coins to make 6440 mm diameter is 230

Step-by-step explanation:

The diameter of the coin is 28mm

Number of coins to have 6440 mm will be

6440/28

= 230

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Evaluate the expression if a =2.4, b = 0.237, and c =9.49
IRISSAK [1]

Answer:

(0.237)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
find the present and future value of $1000 received every month end for 20 years if the interest rate is j12=12%p.a
GenaCL600 [577]

Answer:

asasassasas

Step-by-step explanation:

4 0
3 years ago
I attached the question
noname [10]
5x = 4y - 3

The correct answer is D. 5x - 4y = -3

This is because standard form is the form ax + by = c, where a, b, and c are coefficients or constants of the variables x and y.  Thus, Answer D (above) is the correct answer to this problem, as it is the only option that fits this.
4 0
3 years ago
n a large high school, 37% of the teachers believe that five minutes is not enough time for students to change classes. However,
timurjin [86]

The difference (faculty-student) in the sample proportions of those who believe that five minutes is not enough time for students to change classes typically varies about 0.096 from the true difference in proportions. Option D is correct.

<h3>What is the standard deviation?</h3>

It is a measurement of statistical data dispersion. The degree to which the value varies is known as standard deviation.

The standard deviation of the sampling distribution is found as;

\rm \sigma_F-\sigma_s= \sqrt{\frac{0.37 \times (1-0.37)}{28}+\frac{0.89 \times (1-0.89)}{100}  } \\\\  \sigma_F-\sigma_s=0.096

The difference in the sample proportions of those who think five minutes is not enough time for students to switch classrooms generally differs by roughly 0.096 from the actual difference in proportions.

Hence option D is correct.

To learn more about the standard deviation, refer to: brainly.com/question/16555520.

#SPJ1

6 0
2 years ago
Need help with these math questions please.
Bas_tet [7]

Answer:

8 - 2π square units.

π/16 - 1/8 square units.

6π - 9√3 square units.

Step-by-step explanation:

The area of the square = 2√2 * 2√2

= 2*2*2

= 8.

The area of the circle = πr^2

= π * [ ( 2√2)/ 2) ]^2

=  π (√2)^2

=  2π.

Second Question:

The area of the circle = π(1/2)^2 = π/4.

Finding the area of the square:

1^2 = 2x^2

x^2 = 1/2

So the area of the square = 1/2

So the area of the red part = 1/4 ( π/4 - 1/2).

= π/16 - 1/8.

Third question

Area of the circle = 6^2 * π = 36π.

Now 60 degrees is 1/6 of 360 degrees so the are of the sector is 6π.

The area of the segment = 6π -  0.5 * 6^2 sin 60

= 6π - 18√3/2

= 6π - 9√3 square units.

6 0
2 years ago
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