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3 years ago

11

A class of students divides into 6 groups. There are 4 people per group How many students are there the class? (include equation

)

1 answer:

OLEGan [10]3 years ago

3 0

Answer:

24

Step-by-step explanation:

6x4=24

6+6+6+6

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The equation of circle having a diameter with endpoints (-2, 1) and (6, 7) is

densk [106]

Answer:

$(x-2)^{2}+(y-4)^{2}=25$

Step-by-step explanation:

step 1

Find the diameter of the circle

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

$A(-2,1)\\B(6,7)$

substitute the values

$d=\sqrt{(7-1)^{2}+(6+2)^{2}}$

$d=\sqrt{(6)^{2}+(8)^{2}}$

$d=\sqrt{100}$

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The radius is half the diameter

so

$r=10/2=5\ units$

step 2

Find the center of the circle

the center of the circle is the midpoint between the endpoints of the diameter

so

The center is

$(\frac{-2+6}{2},\frac{1+7}{2})$

$(2,4)$

step 3

Find the equation of the circle

The equation of the circle is

$(x-h)^{2}+(y-k)^{2}=r^{2}$

substitute the values

$(x-2)^{2}+(y-4)^{2}=5^{2}$

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3 years ago

Does 5 mm , 12 mm , and 17 mm form a right triangle

Vlad [161]

Answer:

The measurements do not form right angled triangle.

Step-by-step explanation:

Given lengths are 5 mm, 12 mm and 17mm

The longer leg forms the hypotenuse of the right angled triangle.

Using Pythagorean theorem;

$a^2+b^2=c^2\\(5)^2+(12)^2=(17)^2\\25+144=289\\169\neq 289$

Therefore,

The measurements do not form right angled triangle.

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A quiz consists of 770 true or false questions. If the student guesses on each question, what is the mean number of correct answ

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Answer: you have a 50/50 chance of getting it right, so basically the number would be 385. half of 770 is 385.

Step-by-step explanation: im built different

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