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Solnce55 [7]
3 years ago
12

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]

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

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

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

<span>
<span>the answer is 5 7/8 in</span></span>



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kykrilka [37]

Step-by-step explanation:

= \frac{4 \sqrt{5} }{3 \sqrt{2} }

Calculate the expression...

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Reduce the fraction..

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7 0
3 years ago
Read 2 more answers
Add 5 over 3 + 2 over 4 =
Leokris [45]

Answer:

exact form: 13 over 6

decimal form: 2.16

mixed number form: 2/ 1 over 6

7 0
4 years ago
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Doss [256]
Cos (x+y)/cos x sin y    

= cos x cos y - sin x sin y  / cos x sin y

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hope this helps
8 0
4 years ago
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Angie read 22 pages during a 30-minute study hall. At this rate, how many pages would she read in 45 minutes
frosja888 [35]
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1.5*30=45

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4 0
3 years ago
Which equation represents the function on the graph?
Marrrta [24]

Answer:

A. Sin 2x

Step-by-step explanation:

This is a trig function and has the shape of sine or cosine. Since it intersects at (0,0), it is likely a sine graph. A normal sine graph starts at (0,0), crests up at 1, and crosses back down at the x-axis at (3.14, 0). However, this graph starts at (0,0) and crosses back again at half that value. This graph has been horizontally compressed by multiplication of a number greater than 1. So this graph is Sin 2x.

6 0
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