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m_a_m_a [10]
2 years ago
9

The length of a rectangle is four times its width.

Mathematics
1 answer:
klemol [59]2 years ago
5 0
The width is 10 and the length is 40
40*2 + 10*2 = 100
And 10*4= 40
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HELP AND I WILL GIVE BRANILIEST
morpeh [17]
This hurts my brain
8 0
2 years ago
Please help with number 17! Urgent! PLEASE! Also please show work:) 25 points!
Tcecarenko [31]
First you would change the time from minutes to seconds by multiplying 4 by 60 because there are 60 seconds in a minute. After finding that (4*60=240) you would subtract the remaining time (12 seconds) from the total time (240 seconds). You would subtract the remaining time from the total time (228 seconds). Using that you would use the ratio time used/total (228/240). Divide that out and multiply by 100 to get 95%. I hope that helps!
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3 years ago
The initial population of a town is 2500, and it grows with a doubling time of 10 years. What will the population be in 8 years?
alisha [4.7K]
2500x0.80=2000 so i think it would be 2000 in 8 years

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4 0
2 years ago
Find the measure of angle c
Vlad [161]

Answer:

Roughly 70.29 degrees

Step-by-step explanation:

Equation:

(2x+27)+(2x-11)+3x = 180

7x + 16 = 180

7x = 164

x ~ 23.43

Angle C:

3x

3(23.43)

70.29

4 0
3 years ago
Answer ASAP, Will give brainliest
erastova [34]

Answer:

Step-by-step explanation:

1) ABCD is a trapezium. AB ║ CD

∠ADC + ∠DAB  = 180°  { Co interior angles}

110° + ∠DAB = 180

         ∠DAB = 180 -110

∠DAB = 70°

2) Sum of all angles of trapezium = 360°

∠A + ∠B + ∠DCB + ∠D = 360

70° + 50° + ∠DCB + 110° = 360

                 230 + ∠DCB = 360

                            ∠DCB = 360 - 230

∠DCB = 130°

3) For finding the height, use Pythagorean theorem

height² + base² = hypotenuse²

      height² + 6² = 10²

      height² + 36 =100

               height² = 100 - 36

              height² = 64

               height = √64

height = 8 m

4) a = AB = x m

  b = 9 m

h = height = 8 m

Area of trapezium = 120 m²

\frac{(a+b)*h}{2}\\\\  = 120

\frac{(x+9)*8}{2} =120\\\\\\(x +9)*4 = 120

x + 9 = 120/4

x + 9 = 30

    x = 30 - 9

x = 21 m

AB = 21m

                             

7 0
3 years ago
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