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3 years ago

What is the perimeter of ^PQR with vertices P(-2,9) Q(7,-3) and R(-2,-3) in the coordinate plane?

1 answer:

5 0

Using the distance formula we can determine the perimeter of PQR.

Distance formula: d=√(x-x1)^2+(y-y1)^2
distance of PR: √(-2+2)^2+(9+3)^2= 12
distance of QR: √(7+2)^2+(-3+3)^2=9
distance of PQ: √(7+2)^2+(-3-9)^2= 15

Perimeter: 12+9+15=36

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Before a renovation, a movie theater had 134 seats. After the renovation, the theater has 188 seats. What is the approximate per

noname [10]

Answer: 40.3%

Step-by-step explanation:

now-before = seats added

188-134 = 54

54/134*100=approx. 49.29% which is rounded to 40.3%

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2 years ago

The function y=-16t^2 +36 represents the height y (in feet) of a water droplet t seconds after falling from an icicle. After how

NikAS [45]

Answer:

1.5 seconds

Step-by-step explanation:

plug 0 in for y

0=-16t^2+36

then slove for t

-36=-16t^2

-36 / -16 = 9/4

9/4=t^2

square root of 9/4 is 3/2 or 1.5

t=1.5

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2 years ago

HElp me plz and thank you

Inga [223]

I don’t know the answer I’m sorry

4 0

3 years ago

Pls help these are due TODAY!!!!

Tamiku [17]

Answer:

Step-by-step explanation:

the two triangles formed from c are similar which means the sides are proportional

the proportion of one length of a side of a triangle to a similar side of the other triangle is the same as another side to its corresponding side of the other triangle. god im bad explaining stuff

anyway 2 is to 8 what 2.5 is to length BC. 2/8 = 2.5/x

-crossmultiplyyy

2*x = 2.5*8

2x = 20

2x/2 = 20/2

x = 10

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3 years ago

What is the variance?<br> What is the standard deviation, rounded to the nearest whole number?

Dmitry [639]

Answer:

What is the variance? 84000

What is the standard deviation, rounded to the nearest whole number? 290

5 stars if this helped

Step-by-step explanation:

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3 years ago