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3 years ago

13

Find the area of the figure.

1 answer:

jeka57 [31]3 years ago

3 0

Answer:

130

Step-by-step explanation:

20 x 13 = 260

260/2 = 130

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When the following quadratic equation is written in standard form, what is the value of "c"?

Nikolay [14]

Answer:

Then value is 2

Step-by-step explanation:

standard of quadratic is A $x^{2}$ +Bx+C=0

and 2 is where C is.

sorry for the bad explanation but, trust me I did this type of question in class yesterday

7 0

3 years ago

Plz help me out with this one. :(

Anettt [7]

I think it is C)
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4 0

3 years ago

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Vesnalui [34]

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3 0

3 years ago

A cuboid with a volume of 924cm^3 has dimensions 4cm, (x+1)cm and (x+11). Show clearly that x^2+12x-220=0 solve the equation by

garik1379 [7]

Answer:

$x^2+12x-220=0$ -- Proved

$x = 10\ \ \ x = -22$

Step-by-step explanation:

Given

$Volume = 924cm^3$

$Dimension: 4cm; (x+1)cm; (x+11)cm$

Required

Show that $x^2+12x-220=0$

The volume is calculated as:

$4 * (x + 1) * (x + 11) = 924$

Open the brackets

$(4x + 4) * (x + 11) = 924$

$4x^2 + 44x + 4x + 44 = 924$

$4x^2 + 48x+ 44 = 924$

Collect Like Terms

$4x^2 + 48x+ 44 - 924=0$

$4x^2 + 48x -880=0$

Divide through by 4

$\frac{4x^2}{4} + \frac{48x}{4} -\frac{880}{4}=0$

$x^2+12x-220=0$

Solving further:

Expand the expression

$x^2 + 22x - 10x - 220 = 0$

Factorize:

$x(x + 22) - 10(x + 22) = 0$

$(x - 10)(x + 22) = 0$

Split:

$x - 10 = 0;\ \ \ x + 22 = 0$

$x = 10\ \ \ x = -22$

5 0

3 years ago

Twice c is equal to 44

Juliette [100K]

Answer:

C=44/2

c=22

Two time c is equal to 44

one time c is equal to 22

5 0

3 years ago