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Olenka [21]
2 years ago
5

This question is confusing me ​

Mathematics
1 answer:
zloy xaker [14]2 years ago
5 0
The answer is A is the answer
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Choose the best decimal to represent 5 3/7<br><br> 2.3<br><br> 5.428571<br><br> 2.3<br><br> 5.428571
NemiM [27]

Answer:

5.428571

Step-by-step explanation:

5\frac{3}{7}

take the fraction and divide that:

\frac{3}{7} =0.428571

then just add 5:

5 + 0.428571 = 5.428571

or...

convert the mixed fraction to improper fraction:

5\frac{3}{7} = \frac{38}{7}

divide like normal:

\frac{38}{7} = 5.428571

4 0
2 years ago
Read 2 more answers
A ball is dropped from a height of 25feet and allowed to bounce until it comes to a rest. Each time the ball bounces it rebounds
alina1380 [7]

Answer:

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Step-by-step explanation:

Given

Initial\ Height =25

Rebound = \frac{4}{5}

Required

Determine the height at the third rebound

At first rebound;

H1 = 25 * \frac{4}{5}

Second rebound

H2 = 25 * \frac{4}{5}* \frac{4}{5}

Third rebound

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Hence; the equation is:

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Solving further;

H3 = 12.8\ ft

8 0
3 years ago
2x - 3y = 9; 2x + y = 13
olga2289 [7]

Answer:

See explanations below

Step-by-step explanation:

Given the simultaneous equations;

2x - 3y = 9... 1

2x + y = 13 ... 2

From 2;

y = 13-2x

Substitute into 1;

2x - 3(13-2x) = 9

2x -39 + 6x = 9

8x - 39 = 9

8x = 9+39

8x = 48

x = 6

Since y  = 13-2x

y = 13-2(6)

y = 13-12

y = 1

The soluton to the system of equation is (6, 1)

Given the equations;

99x + 101y = 499; .... 1 * 101

101x + 99 y = 501 ... 2 * 99

______________

9999x + 10,201y = 50,399

9999x + 9801y = 49,599

Subtract

10201y - 9801y = 50399-49599

400y = 800

y = 2

Substitute y = 2 into 1;

From 1;

99x + 101y = 499

99x + 101(2) =499

99x +202 = 499

99x = 499 - 202

99x = 198

x = 198/99

x =2

Hence the solution is (2,2)

For the equations;

49x - 57y = 172 .... * 57

57x - 49y = 252 __ * 49

____________________

2793x -3249y =  9804

2793x - 2401y = 12348

Subtract

-3249y+2401y = 9804-12348

-848y = -2544

y = 3

Substitute into 1;

49x - 57y = 172

49x - 57(3) = 172

49x - 171 = 172

49x = 171+172

49x = 343

x = 7

Hence the solution is (7, 3)

8 0
2 years ago
Factors of 9 simple question ​
dolphi86 [110]

the factors are 1, 3, 9 i hope it helps :)

Step-by-step explanation:

bc i saidsoooo:)

6 0
2 years ago
An experience bricklayer can construct a small wall in 3 hours. An apprentice can complete the job in 5 hours. Find how long it
Over [174]

Answer:

Step-by-step explanation:

If the bricklayer can construct the wall in its entirety in 3 hours, then he can get 1/3 of the job done in an hour.

If the apprentice can get the whole job done in 5 hours, then he can get 1/5 of the job done in an hour. If they both work together on said job, the equation is

\frac{1}{3}+\frac{1}{5}=\frac{1}{x} and now we solve for x. Multiply everything by the LCM to get rid of the fractions. That would be 15x:

15x(\frac{1}{3}+\frac{1}{5}=\frac{1}{x}) and doing that gives us

5x + 3x = 15 and

8x = 15 so

x = 1.875 hours which is 1 7/8 hours which is also 1 hour and 52 1/2 minutes.

3 0
2 years ago
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