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Elena-2011 [213]
2 years ago
10

R is the midpoint of Qs, if QR=13, what is the length of QS?

Mathematics
1 answer:
svp [43]2 years ago
6 0
QR = half of the line QS,
13*2= 26

answer : 26
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I'd be happy if you could help!​
ss7ja [257]

Step-by-step explanation:

Circumference=22π

2πr=22π

r=11 in.

Area=121π in.²

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8 0
2 years ago
A building is known to be 192 feet tall. A ball is dropped from the top of the building. In how many seconds will the ball hit t
Archy [21]

Answer:

  • h = 0 when the ball hits the ground
  • about 3.464 seconds

Step-by-step explanation:

The formula gives h = 192 when t=0, so we assume that h represents the height above the ground. The ball will have a height of 0 when it hits the ground.

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Using that in the equation, we can solve for t.

  0 = 192 -16t^2

  0 = 12 -t^2 . . . . . . divide by 16

  t^2 = 12 . . . . . . . . add t^2

  t = √12 = 2√3 ≈ 3.464 . . . . take the square root

It will take 2√3 seconds, about 3.464 seconds, for the ball to hit the ground.

5 0
3 years ago
Write following ratio in simplest form : <br> 125 g : 1 kg​
Dmitry [639]

Answer:

125g:1Kg

=> 125g : 1000g

<h3>=> 1:4</h3>

5 0
3 years ago
Read 2 more answers
Helpp I’ll mark you brainlist
aliya0001 [1]

Answer: 1

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8 0
3 years ago
Ralph is 3 times as old as Sara. In 4 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now. Ralph's
IgorLugansk [536]
Let
R = Ralph's age
S = Sara's age

First statement is translated as:
S = 3R

Second statement is translated as:
S + 4 = 2(R + 4)

Use the first equation to be substituted into the second one in terms of R which is the one we are actually going to solve for Ralph's age.
Since S = 3R, then
3R + 4 = 2(R + 4)
3R + 4 = 2R + 8
3R - 2R = 8 - 4
R = 4 years old
7 0
2 years ago
Read 2 more answers
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