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Georgia [21]
3 years ago
6

An important formula from chemistry is PV=nrt . Solve the formula for t

Mathematics
1 answer:
masha68 [24]3 years ago
6 0
(PV=nrt) Divide nr from both sides to get t by itself. t=PV/nr
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Using the digits 0 to 9 at most one Time each,fill in the boxes below to write equations whose solution is 1/2
andrezito [222]

Answer:

The equation is 4x + 5 = 2x + 6

Step-by-step explanation:

The solution is \frac{1}{2} means x = \frac{1}{2}

Let us put the coefficient of x in the left hand side = 4 and the coefficient of x in the right hand side = 2

∵ 4x - 2x = 2x

Now we need two numerical terms their difference is 1 like 5 and 6 or 6 and 7 or 7 and 8 or 8 and 9

Let us take 5 and 6

∵ 4x + 5 = 2x + 6

- Subtract 2x from both sides

∴ 2x + 5 = 6

- Subtract 5 from both sides

∴ 2x = 1

- Divide both sides by 2

∴ x = \frac{1}{2}

∴ The solution is  \frac{1}{2}

The equation is 4x + 5 = 2x + 6

8 0
3 years ago
The net of a pyramid is shown below. 4in 4in 4in 4in 8in. The surface area of the solid is __ square inches.
Inga [223]

Answer:

80 in.²

Step-by-step explanation:

The total surface area of the pyramid is the sum of the area of the base and the areas of the 4 triangular sides.

Square: area = s²

Square: side = 4 in.

Triangular side: area = bh/2

Triangular side: base = 4 in.; height = 8 in.

Area of the base: s² = (4 in.)² = 16 in.²

Total area of the 4 triangular sides: 4 × bh/2 = 2bh = 2 × 4 in. × 8 in. = 64 in.²

Surface area = 16 in.² + 64 in.² = 80 in.²

7 0
1 year ago
Simplify<br>-6√20+2√45+7√5 <br><br>show Woking out to prove ans please​
Dmitry_Shevchenko [17]

Answer:

\sqrt{5}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Simplifying the radicals

\sqrt{20} = \sqrt{4(5)} = \sqrt{4} × \sqrt{5} = 2\sqrt{5}

\sqrt{45} = \sqrt{9(5)} = \sqrt{9} × \sqrt{5} = 3\sqrt{5}

Thus

- 6(2\sqrt{5}) + 2(3\sqrt{5}) + 7\sqrt{5}

= - 12\sqrt{5} + 6\sqrt{5} + 7\sqrt{5}

= \sqrt{5}

6 0
3 years ago
Write an equation in point-slope form for each line.<br> (If possible please show work)
Free_Kalibri [48]

Answer:

so

slope is calculated this way:

\frac{3 - 6}{2 - 1}  =  \frac{ - 3}{1}  =  - 3

let's calculate y init by:

3 = -3×2 + b

b = 9

so equation is:

y=-3x+9

6 0
3 years ago
1 cat + 20 dogs + 60 men + 5 shark=​
Goryan [66]

Answer:

Step-by-step explanation:

1 cat + 20 dogs + 60 men + 5 shark=​ 86

6 0
3 years ago
Read 2 more answers
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