2 years ago

Solve x2 + 14x = -40 by completing the square.

Mathematics

1 answer:

zalisa [80]2 years ago

6 0

Answer: C x=-4 and -10

Step-by-step explanation:

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Calcula el ancho de un terreno rectangular si el largo mide 20 metros y la superficie es de 280 metros cuadrados

Anna35 [415]

Answer:14 m

Step-by-step explanation:

Dada

larga $l=20\ m$

superficie $A=280\ m^2$

Suponga que el ancho es w

La superficie está dada por el producto de la longitud y la anchura.

$\therefore A=lw\\\Rightarrow 280=20\times w\\\Rightarrow w=14\ m$

Por lo tanto, el ancho es de 14 m.

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3 years ago

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Step-by-step explanation:

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3 years ago

in parallelogram ABCD, AC is diagonal, the measure <ABC is 40°, and the measure of <ACD IS 57°. what is the measure of &lt

Nutka1998 [239]

Answer: $\angle CAD = 83^\circ$ Option D

Step-by-step explanation:

In this question we use properties of parallelogram and angle sum property of a triangle.

In parallelogram ABCD

$\angle ABC=40^\circ$

As, we know that opposite angles of parallelogram are equal

Therefore,

$\angle ABC =\angle ADC =40^\circ$

Now, in triangle ADC

We know that sum of all the angles of a triangle is $=180^\circ$

$\angle ACD +\angle ADC +\angle DAC =180^\circ$

$57^\circ +40^\circ +\angle DAC =180^\circ$

$97^\circ + \angle DAC = 180^\circ$

Subtracting 97 from both sides we get

$\angle DAC = 180^\circ - 97^\circ$

$\angle DAC = 83^\circ$

Measure of $\angle CAD = 83^\circ$

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3 years ago

Give the following arithmetic sequence, determing the next three terms

shtirl [24]

Answer:

0.75,1,1.25

Step-by-step explanation:

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Furkat [3]

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Step-by-step explanation:

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