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Svet_ta [14]
3 years ago
9

A teacher randomly selects three students each month from a class of 30 students to be the students of the month. Each student r

eceives a
special certificate special seating in class, and a free homework pass. How many different groups of three students could be selected?
​
Mathematics
1 answer:
Lunna [17]3 years ago
4 0

Answer:

10 groups

Step-by-step explanation:

because 30 divided by 3 is 10

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Through(-2,-3); parallel to 3x+2y=5
Vilka [71]

Step-by-step explanation:

Hey there!

<u>Firstly </u><u>find </u><u>slope </u><u>of</u><u> the</u><u> </u><u>given</u><u> equation</u><u>.</u>

Given eqaution is: 3x + 2y = 5.......(i)

Now;

slope(m1) =   \frac{ - coeff. \: of \: x}{coeff. \: of \: y}

or \: m1 =  \frac{ - 3}{2}

Therefore, slope (m1) = -3/2.

As per the condition of parallel lines,

Slope of the 1st eqaution (m1) = Slope of the 2nd eqaution (m2) = -3/2.

The point is; (-2,-3). From the above solution we know that the slope is (-3/2). So, the eqaution of a line which passes through the point (-2,-3) is;

(y-y1) = m2 (x-x1)

~ Keep all values.

(y + 3) =  \frac{ -  3}{2} (x + 2)

~ Simplify it.

2(y + 3)  = - 3x - 6

2y + 6 =  - 3x - 6

3x  + 2y + 12 = 0

Therefore, the eqaution of the line which passes through the point (-2,-3) and parallel to 3x + 2y= 5 is 3x + 2y +12 =0.

<em><u>Hope </u></em><em><u>it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

8 0
2 years ago
Read 2 more answers
A box contains plain pencils and pens. A second box contains color pencils and crayons. One item from each box is chosen at rand
pochemuha

Answer:

1/2

Step-by-step explanation:

its 1 out of 2 chances

6 0
3 years ago
-1.4 -1 and 1/25 -1.25 least to greatest
never [62]
-1.4, -1.25, 1/25 is the answer
4 0
3 years ago
How to solve this task 4×-2+1=3×+5
just olya [345]
4x-2+1=3x+5

Subtract 3x from both sides

x-2+1=5

Same as

x-1=5

Add 1 to both sides

x=6
8 0
3 years ago
How do i rename 2/7 and 10/21 and whats the most common denominator for them
emmainna [20.7K]

Answer:

just multiply 7 by 21 and 21 by 7

like

2*21/7*21. + 10*7/21*7

41/147+ 70/147

111/147. Ans

6 0
3 years ago
Read 2 more answers
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