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kozerog [31]
3 years ago
8

If a < 0 and b > 0, then the point (a, b) is in Quadrant

Mathematics
1 answer:
Archy [21]3 years ago
7 0

Answer: The answer is C) lll.

A) I.  

B) II.  

C) III.  

D) IV.

Step-by-step explanation:

If a < 0 and b < 0, then the point (a, b) is in Quadrant

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Helppp!!!and thanks.
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Step-by-step explanation:

12inches/foot , 12x132=1,584 inches

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How.to express the sum 21/9 in a whole number and fractions
JulijaS [17]

Answer:

2 1/3

Step-by-step explanation:

21/9 is 2.33 or 2 1/3

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3 years ago
Need some help please would really be greatful
Gnesinka [82]

Answer:

x = 100°

Step-by-step explanation:

Actually the drawing is very inaccurate, so it is a regular pentagon, otherwise x would be 60° and none of the answers would fit.

The formula for finding the sum of all angles in a polygon is:

(n-2) * 180°

n is the number of sides

Here n = 5, so the sum of all angles is (5-2) * 180° = 540°

x + 2x + 86 + 92 + 62 = 540

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6 0
3 years ago
Boyle’s law states that the volume of a gas varies inversely with applied pressure. Suppose the pressure on 60 cubic meters of g
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\bf \qquad \qquad \textit{inverse proportional variation}&#10;\\\\&#10;\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad  y=\cfrac{k}{x}\impliedby &#10;\begin{array}{llll}&#10;k=constant\ of\\&#10;\qquad  variation&#10;\end{array}\\\\&#10;-------------------------------

\bf \stackrel{\textit{the volume of a gas varies inversely with applied pressure}}{v=\cfrac{k}{p}}&#10;\\\\\\&#10;\textit{we also know that }&#10;\begin{cases}&#10;v=60\\&#10;p=1&#10;\end{cases}\implies 60=\cfrac{k}{1}\implies 60=k&#10;\\\\\\&#10;\boxed{v=\cfrac{60}{p}}&#10;\\\\\\&#10;\stackrel{\textit{now if we apply 3 atmospheres, p=3, what is \underline{v}?}}{v=\cfrac{60}{3}}
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4 years ago
Read 2 more answers
Solve this equation for x: 2x^2 + 12x - 7 = 0
zhannawk [14.2K]

Answer:

x=0.5355 or x=-6.5355

First step is to: Isolate the constant term by adding 7 to both sides

Step-by-step explanation:

We want to solve this equation: 2x^2 + 12x - 7 = 0

On observation, the trinomial is not factorizable so we use the Completing the square method.

Step 1: Isolate the constant term by adding 7 to both sides

2x^2 + 12x - 7+7 = 0+7\\2x^2 + 12x=7

Step 2: Divide the equation all through by the coefficient of x^2 which is 2.

x^2 + 6x=\frac{7}{2}

Step 3: Divide the coefficient of x by 2, square it and add it to both sides.

Coefficient of x=6

Divided by 2=3

Square of 3=3^2

Therefore, we have:

x^2 + 6x+3^2=\frac{7}{2}+3^2

Step 4: Write the Left Hand side in the form (x+k)^2

(x+3)^2=\frac{7}{2}+3^2\\(x+3)^2=12.5\\

Step 5: Take the square root of both sides and solve for x

x+3=\pm\sqrt{12.5}\\x=-3\pm \sqrt{12.5}\\x=-3+ \sqrt{12.5}, $ or $x= -3- \sqrt{12.5}\\$x=0.5355 or x=-6.5355

6 0
3 years ago
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