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jok3333 [9.3K]
3 years ago
12

PLEASE Help THIS IS DUE Tomorrow!!!!!!!!!! PLEASE This is urgent

Mathematics
1 answer:
jolli1 [7]3 years ago
7 0

Answer:

16. 4 6/8 or 4 3/4

17. 3 chairs

18. 320 cars

19. 10 students

Step-by-step explanation:

15. Not enough Information. I need to know how many pencils she had in all

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Solve by using Pythagorean Theorem, a= 5, b= x-1, and c=x
charle [14.2K]

The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

Step-by-step explanation:

The given is,

             a = 5

             b = x - 1

             c = x

Step:1

      Pythagorean theorem is,

              a^{2} + b^{2} = c^{2}................................(1)

      (  It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides )

      From the given values the equation (1) becomes,

                       5^{2} + (x-1) ^{2} = x^{2}

                             ( (a-b)^{2} = a^{2}  + b^{2} -2ab )

               25 + ( x^{2} + 1 - 2x ) = x^{2}

                           25 + 1 -2x = 0               ( ∵ Eliminate x^{2} in both sides)

                                     26 = 2x

                                       x = 13

Step:2

        From the values of x,

                   a = 5

                    b = ( 13 - 1 ) = 12

                   c = 13

Result:

            The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.

3 0
3 years ago
Please answer if you know the answer!<br><br> [Help]
Alinara [238K]

Remember that an exponent means repeated multiplication.

The exponent of 4 means you have four \big(b^2\big)'s mutiplied together:

      \big(b^2\big)\cdot\big(b^2\big)\cdot\big(b^2\big)\cdot\big(b^2\big)

And then each exponent of 2 inside means you have two b's multiplied inside each set of parentheses.:  

    \big(b\cdot b\big)\cdot\big(b\cdot b\big)\cdot\big(b\cdot b\big)\cdot\big(b\cdot b\big)

There are 8 b's there when you expand this out.

6 0
3 years ago
a train travelling at 60 km per hour takes 18 second to cross a 180 metre long platform find the length of the train​
uranmaximum [27]
Lengthof train=X
platform length=180
total distance=x+180
speed=60km/hr=60×5/18=(300/18)m/
Time =18s
Time =Distance/speed
18=X+180/(300/18
18×300=18(X+180)
300=X+180
x=300-180=120
so length of the train=120m
6 0
3 years ago
A circular swimming pool has a radius of 15 ft. There is a path all around that pool that is three feet wide.
alisha [4.7K]
Pi•r^2

Radius= 15
Plug in and that should give you the blue area. =706.858

If you added 3 feet to the circle that would change the radius to 18 so back to the formula...
Pi•18^2
=1,017.876

To find the shades you would have to subtract the two and get your answer

Interesting. Either the answer choices are wrong or I am.... is the formula right? Lol it’s been too long
7 0
3 years ago
Read 2 more answers
Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played. She found that the re
max2010maxim [7]

Answer:

country = 0.31

rock and roll =0.47

Blues = 0.22

Step-by-step explanation:

country = 11

Rock and roll= 17

blues = 8

Total = 36

the probabilities by dividing the frequencies by the total. ( round to the nearest hundredth.)

11/36 = country

17/36 = rock and roll

8/36 = blues

Divide

country = 0.31

rock and roll =0.47

Blues = 0.22

pls mark brainliest

8 0
3 years ago
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