Can someone explain? Please help! 15 pts!!!!

Mathematics

1 answer:

anygoal [31]3 years ago

3 0

Let
x--------------> the third stone measure

we know that
the recommended height for the bench is ------> 20 in
20=[4 3/8]+[4 1/2]+[5 1/4]+[x]
4 3/8---------> (4*8+3)/8=35/8
4 1/2---------> (4*2+1)/2=9/2
5 1/4---------> (5*4+1)/4=21/4

20=[35/8]+[9/2]+[21/4]+[x]

x=20-(35/8)-(9/2)-(21/4)

x=20-(35+4*9+2*21)/8-----> 20-113/8------- > (8*20-113)/8

x=47/8---------- > 5.875=5 7/8

the answer is 5 7/8 in

You might be interested in

Solving special systems.

goldfiish [28.3K]

Answer:

Step-by-step explanation:

it has no solutions b/c the lines are parallel...but at a different offset.. so they never cross

8 0

3 years ago

Select all that apply.

Sergeu [11.5K]

I got B and D, sorry if my answers are wrong!!

5 0

2 years ago

Use the following scenario to answer the question below:

Aleks [24]

Answer:

9 hr * 60 min/hr = 540 min. 540 min * 60 sec/min = 32,400 sec. Use the method described by panic mode: round the number down until there is only one non-zero digit left. Here, 32,400 rounds down to 30,000. Now count the number of zeroes; the result is the order of magnitude: 4. (You see this in scientific notation also: 30,000 = 3 × 10^4.)

5 0

2 years ago

Stanley measured a county park and made a scale drawing. The picnic area, which is 120

algol [13]

Answer:

Step-by-step explanation:

6 0

2 years ago

a marble was randomly selected from a bad containing 3 red marbles , 3 blue marbes and 3 green marbles . what is the probability

galina1969 [7]

Answer:

$\frac{1}{3}$

Step-by-step explanation:

If there are 9 marbles in total and the desired outcome is to pick a green marble then the probability is $\frac{desired outcome}{totaloutcomes}$ = $\frac{3}{9}$ which simplifies down to a third.

8 0

3 years ago

Read 2 more answers