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DanielleElmas [232]
2 years ago
15

Please help me with each my math questions thank you

Mathematics
1 answer:
SVEN [57.7K]2 years ago
3 0

Answer:

1) 3 3/4

2) The  the inequality is greater than or equal to 2

3) f > 5

Step-by-step explanation:

It just is

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Find the value of x and y using matrix method. 2x – 5y = 7 -2x + 4y = - 6
juin [17]

9514 1404 393

Answer:

  (x, y) = (1, -1)

Step-by-step explanation:

The augmented matrix of coefficients for these equations is ...

  \left[\begin{array}{cc|c}2&-5&7\\-2&4&-6\end{array}\right]

The row-reduction function of your calculator can find the solution to the system of equations. The result of using that function is ...

  \left[\begin{array}{cc|c}1&0&1\\0&1&-1\end{array}\right]

This tells you the solution is (x, y) = (1, -1).

6 0
3 years ago
6 men and 8 women are going to be assigned to a specific row of seats in a theater. If the 14 tickets for the numbered seats are
Sedbober [7]
If exactly one woman is to sit in one of the first 5 seats, then it means that 4 men completes the first 5 seats.
No of ways 4 men can be selected from 6 men = 6C4 = 15
No of ways 4 men can sit on 5 seats = 5P4 = 120
No of ways 1 woman can be selected fom 8 women = 8C1 = 8
No of ways 1 woman can sit on 5 seats = 5P1 = 5

No of ways <span>that exactly one woman is in one of the first 5 seats = 15 * 120 * 8 * 5 = 72,000

No of ways 14 people can be arranged in 14 seats = 14!

Probability that exactly one woman is in one of the first 5 seats = 72,000 / 14! = 0.0000008259 = 0.000083%
</span>
8 0
3 years ago
What is an equation of the line that passes through the points (- 2, 1) and (- 8, 4) ?
Fantom [35]

Answer:

y=-x/2

Step-by-step explanation:

m=(4-1)/(-8-(-2))

m=3/-6

m=-1/2

b=y-mx

b=1-(-1/2*(-2))

b=1-1

b=0

y=-x/2

7 0
3 years ago
If smart in math please answer this question I will reward you with brainlest IF CORRECT!
Nutka1998 [239]

Answer:

the answer is true.

Step-by-step explanation:

all 5 pointed stars have point sym

6 0
3 years ago
Read 2 more answers
Someone please help me I’m so confused!!!
QveST [7]

Answer:

number one.  186in^{2}  number two.  36cm^{2}

Step-by-step explanation:

FOR NUMBER ONE:

the area of a trapezoid formula is   \frac{a+b}{2} h where a and b are the bases and h is the height. so we have to add in the numbers into the formula

\frac{12+15}{2} * 6\\ = <em>81</em>

and the paralellogram formula is b×h.  where b is the base and h is height

15 × 7 = <em>105</em>

so the area of the figure is 81 + 105 is 186 in^2

FOR NUMBER TWO:

the area of the square formula is s^{2}.   where s is the side

4^2 = <em>16</em>

and for the paralellogram is b × h

4 × 5 = <em>20</em>

so the area of the figure is 16 +20 = 36 in^2

hope this helps! ;)

5 0
3 years ago
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