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3 years ago

Solve for a: u = 3b - 2a + 2

Mathematics

2 answers:

AveGali [126]3 years ago

7 0

If a=2 then you would have u=3b-2(2) or u=3b-4 :)

Yuri [45]3 years ago

3 0

Answer:

Step-by-step explanation:

B= 2/3a-2//3+1/3u, u equals R, A equals r

A=3/2b+1-1/2u, u equals R b equals R

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What are the solutions of the equation (2x + 3)2 + 8(2x + 3) + 11 = 0

Tom [10]

Answer:

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

Step-by-step explanation:

The given equation is

$(2x+3)^2+8(2x+3)+11=0$

Let us treat this as a quadratic equation in $(2x+3)$ .

where $a=1,b=8,c=11$

The solution is given by the quadratic formula;

$(2x+3)=\frac{-b\pm \sqrt{b^2-4ac} }{2a}$

We substitute these values into the formula to obtain;

$(2x+3)=\frac{-8\pm \sqrt{8^2-4(1)(11)} }{2(1)}$

$(2x+3)=\frac{-8\pm \sqrt{64-44} }{2}$

$(2x+3)=\frac{-8\pm \sqrt{20} }{2}$

$(2x+3)=\frac{-8\pm2\sqrt{5} }{2}$

$(2x+3)=-4\pm \sqrt{5}$

$(2x+3)=-4-\sqrt{5}$ or $(2x+3)=-4+ \sqrt{5}$

$2x=-3-4-\sqrt{5}$ or $2x=-3-4+ \sqrt{5}$

$2x=-7-\sqrt{5}$ or $2x=-7+ \sqrt{5}$

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

5 0

3 years ago

Kevin needs to convert 620 millimeters per minute to meters per hour. Which conversion factors should he use?

Annette [7]

Try this option:
1 meter=1000 mm; 1 hour=60 min. From another side: 1 mm=0.001 m. and 1 min=1/60 h.
Using this rule:
620 mm/h=0.06*620 m/h=37.2 meters per hour.

answer: 0.06

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3 years ago

Which point does the line with equation y+4=3(x-7) pass through?

gregori [183]

<span>y+4=3(x-7)
y + 4 = 3x - 21
y = 3x - 21 -4
y = 3x - 25

when x = 7
y = 3(7) - 25
y = -4
Therefore (7, -4) pass through this equation </span>

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3 years ago

What is the literal surface area of triangular prism above

natulia [17]

36 it the surface area of the triangler prism

5 0

2 years ago

Please help me out....................

maxonik [38]

Answer:

x = 180 - 2 * 35 = 110°

y = (180 - 82)/2 = 49°

4 0

3 years ago