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Harlamova29_29 [7]
3 years ago
8

I need help on both of them and i will give 20 pts for this Please help

Mathematics
2 answers:
Alla [95]3 years ago
5 0
3. 1/5 4. 13/20 pretty easy if you think about it
lorasvet [3.4K]3 years ago
3 0
Probability= number of ways it can happen/ total number of results or outcomes
Science fiction) 10/20 = 1/2
Not action) 13/20
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What is the area of this rectangle?
nataly862011 [7]

Answer:  18 units squared

Step-by-step explanation:

To find area of a rectangle use A=lw

we can count the units for both and get...

11x2=18

So 18 units squared

3 0
2 years ago
The area of a rectangle is 144cm squared.if the length is 16cm. What's the perimeter?​
andreev551 [17]

Answer:

50

Step-by-step explanation:

rectangle area = 144 cm

Formula: A= L*H

The give the length which is 16

144 = 16*H

Since they gave u the area instead of the height, work backwards

144/16 = 16/16 *H

9 = H

Now you have the length and height

Length: 16

Height: 9

Perimeter is when you add up all the sides

The top and bottom of the rectangle is the length which is 16 so

16 + 16 = 32

The left and right side of the rectangle is the height which is 9 so

9 + 9 = 18

Now add then both

32 + 18 = 50

So the perimeter of the rectangle is 50

Hope this helped!

4 0
2 years ago
24x^2-55x-24=0 what does x equal?
damaskus [11]
The answer is 2.667.
7 0
3 years ago
A train 100 m long crosses a pole in 5 seconds.Find the speed of the train in kilometre per hour.​
In-s [12.5K]

Answer:

\sf72  km/h

Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

\sf Time \:  taken=5 \:  seconds

\sf \: Speed  \: of \: the \: train =  \frac{Distance }{Time}

\sf =  \frac{100}{5} \:  m/s

\sf \:  = 20 \: m/s

\sf \: =  20 \times \frac{18}{5}  \: km/h

\sf = 72 \: km/h

  • Hence, the speed of the train is 72 km/h
6 0
2 years ago
Solve for x, rounding to the nearest hundredth.
VARVARA [1.3K]

\sf\huge{Answer :-}

\implies\sf{ {2}^{4x} = 78 }  \\ \implies\sf{ ({2}^{4})^{x}  = 78 } \\  \implies\sf{ {16}^{x} = 78 } \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \implies\sf{ x =  log_{16}(78)  } \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \implies\sf{x = 1.5713505547\: } \\\implies\sf{x = 1.57}

5 0
2 years ago
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