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3 years ago

Find the missing lengths and leave answers as radicals in simplest form?

Mathematics

2 answers:

ElenaW [278]3 years ago

5 0

Answer:

x=6

y=3

Step-by-step explanation:

y(side)= x

x(side)=2x

3rd side (3 $\sqrt{3}$ ) = x $\sqrt{3}$

x=3;

x= 2(3)=6

y=(3)=3

Daniel [21]3 years ago

4 0

Answer:

x = 6 ; y = 3

Step-by-step explanation:

x = 2y

4y² = y² + 27

3y² = 27

y² = 9

y = 3 and x = 6

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sergey [27]

Answer:

Yea.. Its C

Step-by-step explanation:

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3 years ago

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Linear pair angles are: Always congruent Sometimes congruent or Never congruent

Grace [21]

Answer:

Always

Step-by-step explanation:

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3 years ago

Find the area of the parrellogram and the units

gavmur [86]

Answer:

1968

Step-by-step explanation:

A= basexheight

= 48x41

= 1968

Units: If base and height are given in metres, units of area will be m².

If they are in cm, them unit of area= cm².

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4 years ago

solve systems of equation. equation number 1: 9 x squared + 4 y squared equals 144. equation 2: x squared plus y squared equals

grigory [225]

$9x^{2} + 4y^{2} =144$
$x^{2} + y^{2}=24$

$9x^{2} + 4y^{2} =144$
$4x^{2} + 4y^{2}=96$
by the difference
5 $x^{2}$ =48
so x= $\sqrt{\frac{48}{5}}$ or x=- $\sqrt{\frac{48}{5}}$
and $y^{2}$ =24- $\frac{48}{5}$
then y= $\sqrt{\frac{72}{5}}$ or - $\sqrt{\frac{48}{5}}$

5 0

3 years ago

An observer, whose eyes are 1.98 m above the ground, is standing 39.2 m away from a tree. The ground is level, and the tree is g

lozanna [386]

Answer:

The tree is 16.25 m tall.

Step-by-step explanation:

Attached is a diagram that better explains the problem.

From the diagram we see that the distance between the top of the tree and the line of sight of the observer is x.

To find the height of the tree, we need to first find x and then add it to the height of the observers line of sight from the ground.

Using SOHCAHTOA trigonometric function:

tan(20) = x/39.2

=> x = 39.2 * tan(20)

x = 39.2 * 0.364

x = 14.27m

Hence, the height of the tree is:

(14.27 + 1.98)m

16.25m

The tree is 16.25 m tall.

5 0

3 years ago