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2 years ago

{3x + y = 5 {5x + 2y = 9 Solve using a matrix

Mathematics

2 answers:

kirill [66]2 years ago

7 0

The answer above me it correct

alukav5142 [94]2 years ago

5 0

Answer:

Y×-2=-2y

3x×-2=-6x

5×-2=-10

2x=-1

X=-0/5

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2 years ago

R = 850 cm, s = 250 cm and t=940 cm. Find the measure of ZS tothe nearest 10th of a degree

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2 years ago

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A 15-foot ladder leans against a house. The bottom of the ladder is 7 feet from the house. To the nearest degree, what angle doe

max2010maxim [7]

The ladder is forming a right triangle with the house. In this right triangle the hypotenuse is the measure of the ladder, and the distance between the house and he ladder is one of the sides of the triangle. To find the angle, $\alpha$ , that the ladder is making with the ground, we are going to use a trig function that relates the adjacent side of our angle with the hypotenuse. That trig function is Cosine.
$Cos \alpha = \frac{adjacent.side}{hypotenuse}$
$Cos \alpha = \frac{7}{15}$
$\alpha =arcCos( \frac{7}{15} )$
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We can conclude that the ladder make with the ground a 62° angle.

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2 years ago