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Nadusha1986 [10]
2 years ago
6

Please help me!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
MAXImum [283]2 years ago
8 0

Answer:

120(I'm not definitely sure)

Step-by-step explanation:

IQR= Q3- Q1= 170 - 50 = 120

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If 139 is added to a number, the result is 44 less than four times the number. Find the number. Step 1 of 2: Use the variable x
lorasvet [3.4K]

Answer:

73

Step-by-step explanation:

let the number = X

If 139 is added, it becomes= X +139

the result becomes 44less than four time the number

= 4(39)-44 = 156-44 =112

the set up equation becomes

X +39 = 112

solving for the value of X

X = 112-39

X = 73

4 0
1 year ago
An oil tank is leaking into a lake at a rate of 0.1 m3/day. The oil slick forms a semicircular disk whose center is at the leak
gregori [183]

Answer:

17.9  m/s

Step-by-step explanation:

Volume of the slick =  0.5 x π r² h--------------------------------- (1)

Where r = radius of slick

           h = thickness of slick, 10⁻⁶m

If 0.5m³ of oil leaked, then the radius of the semicircular slick can be calculated from equation (1)

V  =  0.5 x π r² h

0.5=  0.5 x  π x  r² x 10⁻⁶

r²   =  10⁶/ π

r =     10³/√π

dV/dt =   πrh dr/dt  + 0.5π r² dh/dt----------------------------------- (2)

Asumming the film thickness is constant , equation (2) becomes

dV/dt =   πrh dr/dt-------------------------------- (3)

dV/dt = 0.1m³/day

r=  10³/√π

dr/dt= rate of expansion of the slick

Substituting  into (3);

0.1 =  π x 10³/√π x 10⁻⁶ x dr/dt

dr/dt = 0.1  x 10⁶/ ( π x 10³/√π)

       =  17.9479 m/s

       ≅  17.9  m/s

8 0
3 years ago
Solve the system of equations by substitution and show work.<br> ​​y=−6x+13<br> y=3x+4
sukhopar [10]

Answer: x= 1 , y = 7

Step-by-step explanation:

y = -6x + 13 ................. equation 1

y = 3x + 4 ................ equation 2

substitute y = 3x + 4 into equation 1 , then we have

3x + 4 = - 6x + 13

collect the like terms , we have

3x + 6x = 13 - 4

9x = 9

x = 1

substitute x = 1 into equation 2 , we have

y = 3(1) + 4

y = 3 + 4

y = 7

Therefore : x = 1 and y = 7

6 0
3 years ago
Read 2 more answers
The odds of winning a goldfish toss game are 1:49. The probability of winning a claw game is 30%. Which game gives you a better
olga_2 [115]

Answer:

the claw game would give you a better %

Step-by-step explanation

when turned into a percent 1:49 becomes 2.040816326531% compared to the claw game that would give you a 30% chance of wining

6 0
3 years ago
Given a circle with radius of 2, which is the degree measure of an arc whose length is 1/2 ?
Finger [1]
180 degrees. It would be half of the circle.
3 0
3 years ago
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