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Dafna11 [192]
3 years ago
6

Which graph represents the solution set for the system x + y> 5 and -3x + 2y< -2.

Mathematics
1 answer:
Leviafan [203]3 years ago
6 0
Is there any picture we can work with?
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Find the area of the trapezoid
Vladimir79 [104]
Area = 1/2 x (a+b) x h

= 1/2 x ( 5+ 13) x 17
=1/2 x 18 x 17
= 153cm. (a and b are the two parallel lines. H is height.)
7 0
3 years ago
Which fraction is equivalent to -3/2?
mel-nik [20]
3/-2 so the first option
5 0
3 years ago
Read 2 more answers
Which are the solutions of x2 = 19x + 1?
Finger [1]

Answer:

(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})

Step-by-step explanation:

we have

x^2=19x+1

we know that

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

-x^{2}-19x-1=0  

so

a=1\\b=-19\\c=-1

substitute in the formula

x=\frac{-(-19)\pm\sqrt{-19^{2}-4(1)(-1)}} {2(1)}

x=\frac{19\pm\sqrt{365}} {2}

x=\frac{19+\sqrt{365}} {2}

x=\frac{19-\sqrt{365}} {2}

(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})

therefore

StartFraction 19 minus StartRoot 365 EndRoot Over 2 EndFraction comma StartFraction 19 + StartRoot 365 EndRoot Over 2 EndFraction

6 0
3 years ago
Read 2 more answers
What are the coordinates of point Q?
Lady bird [3.3K]

Answer:

Q (-4, -2); 2 units; Q' will be above the x-axis; 2 unites; no; yes, the y coordinates are multiplied by -1; Q' (-4, 2); R' (-2, 2), S' (1, 5), T' (-2, 5);

Step-by-step explanation:

even after a reflection over the x-axis, each points distance from the x-axis will stay the same

the x-coordinates don't change because the distance from the y-axis stays the same

the picture below shows points of Q'R'S'T', just connect the vertices

5 0
2 years ago
Solve the equation: 15=2y-5
Arisa [49]

Answer:

2 times 10 - 5 equals 15

Step-by-step explanation:

hope that helps

8 0
3 years ago
Read 2 more answers
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