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tatuchka [14]
3 years ago
11

Find the sum of 2/5 and 1/3

Mathematics
2 answers:
Kaylis [27]3 years ago
5 0
To do the problem change the denominator for both.
2/5 and 1/3
5 and 3 both have 15 as a common multiple.
5*3=15 and 3*5=15
2*3=6 and 1*5=5
6/15 plus 5/15
11/15
Fynjy0 [20]3 years ago
4 0
First change them to the same denominator....

2×3  6
__ = __
5×3  15

1×5   5
__  = __
3×5    15

6/15+ 5/15= 11/15.

So the sum is 11/15
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AB and CD are straight line segments.
frutty [35]

Answer:

<h2>i) Angle AOC is 95° </h2>

Reason:- Angle AOC is equal to Angle DOB since they are Vertically Opposite Angles.

<h2>ii) Angle BOC is 85°</h2>

Reason:- Angle AOC + Angle BOC - 180° (they lie in a straight line so they are a linear pair. Sum of the angles will be 180°)

Angle AOC is 95°, So:-

95° + Angle BOC = 180°

Angle BOC= 180° - 95°

<h3><u>Angle BOC = 85°</u></h3>

<u></u>

<h2>iii) Angle DOE is 17°</h2>

Reason:- Angle AOE+ Angle DOE+ Angle DOB = 180° (they lie in a straight line so they're a linear pair. Sum of the angles will be 180°)

So,

68° + Angle DOE+ 95° = 180°

163° + Angle DOE = 180°

Angle DOE= 180° - 163°

<h3><u>Angle DOE is 17°</u></h3>
5 0
3 years ago
A piece of carpet is in the shape of an isosceles trapezoid with a height of 30 inches and bases 40 and 60 inches. What is the a
yaroslaw [1]
30x40x60=72,000. with area you do LxWxH
3 0
3 years ago
Shadi has four bottles. the bottle hold 650 ml,0.38 l , 5020 ml, 0.045 l. Shadi wants to use the bottle that holds closest to 1
erik [133]

Answer:

0.38 l

Step-by-step explanation:

Bottles:

  • 650 ml
  • 0.38 l= 380 ml
  • 5020 ml
  • 0.045 l= 45 ml

Closest to 1/2 l= 500 ml volume? The difference between the given and 500 ml volume:

  • 650 ml- 500 ml= 150 m
  • 380 ml- 500 ml= -120 ml
  • 5020 ml- 500 ml= 4520 ml
  • 45 ml- 500 ml= - 455 ml

The smallest absolute difference in the list above is -120 so the closest one to 1/2 liters is 380 ml= 0.38 l

4 0
3 years ago
Problem 10-9 A sample of 40 observations is taken from a population of unknown mean wherein the standard deviation is assumed to
Svetradugi [14.3K]

Answer: (36.7, 39.3)

Step-by-step explanation:

Confidence interval for population mean:

\overline{x}\pm z^c\dfrac{\sigma}{\sqrt{n}} , where n= sample size, \overline{x}= sample mean, \sigma = population standard deviation, z^c = critical z value.

Given: n= 40 , \sigma=5\ g,\ \ \ \overline{x} = 38.0\ g

Critical z-value for 90% confidence = 1.645

Then, required confidence interval:

38.0\pm(1.645)\dfrac{5}{\sqrt{40}}\\\\= 38.0\pm (1.645)(0.79057)\\\\\approx38.0\pm1.30\\\\= (38-1.30,\ 38+1.30)=(36.7,\ 39.3)

Hence, a 90% Confidence Interval =  (36.7, 39.3)

5 0
3 years ago
4-9/3=-18 need to solve this
Sever21 [200]

Answer:

It is - 5/3,not - 18..........

7 0
3 years ago
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