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GalinKa [24]
3 years ago
6

PLEASE HELP WILL MARK BRAINLIEST

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer: D 12

Step-by-step explanation:

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A science class consists of 14 boys and 15 girls.
Sergeu [11.5K]

(14 over 5) · (15 over 5)

= 14·13·12·11·10/5! · 15·14·13·12·11/5!

= 6012006

(n over k) is the Binomial coefficient

6 0
3 years ago
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Given this number line, AB=?
Marta_Voda [28]

Answer:

28

Step-by-step explanation:

AB

4(7)=28

6 0
3 years ago
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Which ordered pair is a solution for 3x + 4y < 12?
Andre45 [30]

Answer:

D, (1,2)

Step-by-step explanation:

It all comes down to substitution. In this case the coefficient of x is 3 and the coefficient of y is 4. The format of these coordinates being (x,y).

1. Plug in your x value (1 in this circumstance) and solve:

3(1) + 4y < 12

3 + 4y < 12

2. Plug in your y value (2 in this circumstance) and solve:

3 + 4(2) < 12

3 + 8 < 12

3. Solve

3 + 8 = 11

11 < 12

5 0
3 years ago
Find the measure of angle A
Gre4nikov [31]

Answer:

21 degrees

Step-by-step explanation:

Triangles have a total angle of 180 degrees.

This makes our equation:

3x+3+4x+135=180

Subtract 135 from both sides and combine like terms

7x + 3 = 45

Subtract 3 from both sides

7x = 42

Divide both sides by 7

x = 6

Plugging the number in:

3x + 3 =

3(6) + 3 =

21

7 0
3 years ago
Please help due tomorrow
mel-nik [20]

Answer: x= 2.5, y = 10

Step-by-step explanation:

<u><em>I'm going to assume that these photocopies are proportional in relations to each other.</em></u>

If they're proportional, you can set up two proportions:

1) \frac{x}{5} =\frac{3}{6} \\\\2) \frac{5}{y} =\frac{3}{6}

And cross-multiply:

1) 6x = 5*3 \\\\2) 3y = 5*6

Then solved for x and y:

1) 6x = 15\\x=\frac{15}{6} =\frac{5}{2} =2.5 \\\\2) 3y = 30\\y=\frac{30}{3} =10

5 0
3 years ago
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