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777dan777 [17]
4 years ago
15

How do I do it like how do I get started

Mathematics
1 answer:
padilas [110]4 years ago
6 0
4x = 2(3 + x + 5)
4x = 2(x + 8)
4x = 2x + 16
4x - 2x = 16
2x = 16
x = 16/2
x = 8
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If R is the total resistance for a parallel circuit with two resistors of resistances of r1 and r2 then 1/r=1/r1+1/r2 find the r
Allushta [10]
A little Algebra, and we're home free!

We are given R = 20 and r2 = 75. We need to find r1.

The formula is 1/R = 1/r1 + 1/r2. Plug-in:
1/20 = 1/r1 + 1/75
1/20 - 1/75 = 1/r1
0.0366 = 1/r1
r1 = 1/0.03666
r1 = 27.272

Our answer is r1 = 27 ohms.
6 0
3 years ago
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Find three numbers between -0.55 and -0.54
antoniya [11.8K]
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Two square sheets of cardboard used for making book covers differ in area by 64 square inches. An edge of the larger square is 2
photoshop1234 [79]

Answer:

15 inches

Step-by-step explanation:

We assume that the edge of the small square is x (inches).

As the edge of the larger square is 2 inches greater than that of the smaller one, so that the edge of the larger square = edge of the small square  + 2 = x + 2 (inches)

The equation to calculate the are of a square is: <em>Area = Edge^2 </em>

So that:

+) The area of the larger square is: <em>Area large square = </em>(x+2)^{2}<em> (square inches)</em>

+) The area of the smaller square is: <em>Area small square = </em>x^{2}<em>(square inches)</em>

<em />

As difference in area of both squares are 64 square inches, so that we have:

<em>Area large square - Area small square  = 64 (square inches)</em>

<em>=> </em>(x+2)^{2} -x^{2} =64<em />

<em>=>  </em>x^{2}+4x+4  -x^{2} =64<em />

<em>=> 4x + 4 = 64</em>

<em>=> 4x = 64 - 4 = 60 </em>

<em>=> x = 60/4 = 15 (inches)</em>

So the length of an edge of the smaller square is 15 inches

3 0
3 years ago
Verify the following:<br> 15x(6+(-2) ) = (15x6) + 15x (-2)
NeX [460]

Answer:

-True-

Explanation:

the left side

60

is equal to the right side

60

, which means that the given statement is always true.

6 0
4 years ago
What is the solution 4x+1y ≤48 and 10 ≤y ?
PIT_PIT [208]
The answer is X=19/2 y=10
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