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masha68 [24]
3 years ago
12

Find the coordinates the intersection of the diagonals of parallelogram QRST if with vertices Q(-2,-1), R(-3,6), S(1,5), and T(2

,-2) HELP PLS
Mathematics
1 answer:
Hatshy [7]3 years ago
6 0

Answer:

  • (-0.5, 2)

Step-by-step explanation:

Diagonals of a parallelogram bisect each other.

Intersection point is the midpoint of either diagonal.

Let's take QS and calculate midpoint using midpoint formula:

  • Q(-2, -1), S(1, 5)
  • x = (x1 + x2)/2 = (-2 + 1)/2 = -1/2 = -0.5
  • y = (y1 + y2)/2 = (-1 + 5)/2 = 4/2 = 2

Point (-0.5, 2) is the answer

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The ratio of girls to boys in Jaime's chorus is 2 to 4. If there are 25 girls in her chorus, how many boys are there? *
Pavlova-9 [17]

Answer:

50 boys

Step-by-step explanation:

2/4 = 1/2

25*2=50

8 0
3 years ago
The length of a rectangle is 4 yd more than twice the width x. The area is 390
masya89 [10]

Step-by-step explanation:

step 1. let l be the length of the rectangle

step 2. l = 2x + 4

step 3. lx = 390 yd^2

step 4. (2x + 4)x = 390

step 5. 2x^2 +4x = 390

step 6. 2x^2 + 4x - 390 = 0

step 7. -4 +- sqr(4^2 -4(2)(-390))/2(2) quadratic formula

step 8. (-4 +- sqr(3136))/4

step 9. (-4 +- 56)/4

step 10. x = 13yd, l = 2x + 4 = 2(13) + 4 = 30yd.

3 0
3 years ago
PART 1
Sloan [31]

the answer has to be C


4 0
3 years ago
Please help! If you do you will get 'Brainliest'
aalyn [17]

Answer:

B

Step-by-step explanation:

This is because 1/2 down from 1 1/2 is 1 then go 2 down on the number lone and you get 1 (B)

5 0
2 years ago
Read 2 more answers
Raphael paid $ 160$160 for a camera during a 75 %75% off sale. What was the​ camera's regular​ price?
Kay [80]
So paid160


75 percent off
100 percent=original
75 percent off=100-75=25%
160=25% of original cost
'of' means multiply
remember tha tpercent is parts out of 100 so
25%=25/100=1/4
160=1/4 times original cost
multily both sides by 4
640=original cost
answe ris $640 =original cost
8 0
3 years ago
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