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3 years ago

I need to know how to do this ASAP

Mathematics

1 answer:

nadezda [96]3 years ago

3 0

Note how angle GFE forms a right angle, which is 90 degrees.
Since the line cuts that angle into two smaller angles, intuitively, these angles add up to 90 degrees.

So, we can say that 2x + 3x = 90 (angle sum of right angle)
5x = 90
x = 18 degrees

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120 applications ? (Select all that apply.)

juin [17]

It would be 36:8 , 9:2 , 72:16

8 0

3 years ago

Write as single power of 3?<br><br>(3^-9)^6

Free_Kalibri [48]

Answer:

The single power of 3 is 3 ^ -54.

Hope it will help :)❤

7 0

3 years ago

Read 2 more answers

Which inequalities are true and false

Nutka1998 [239]

5×1 < 3 __ false
5×3 < 3 ___false
5×-2 <3 ___true

7 0

3 years ago

Help please! <br> find the area of the isoceles triangle

DiKsa [7]

Answer:

This is a long answer. I got 82.5

Step-by-step explanation:

Area of isoceles triangle is

$\frac{1}{2} (b)(h)$

where b is the base and h is height.

Let draw a altuide going through Point D that split side FE into 2 equal lines. Let call that point that is equidistant from FE, H.

Since it is a altitude,it forms a right angle. So angle H=90.

Angle H is equidistant from F and E so

FH=11

EH=11.

The height is still unknown.

We can use pythagorean theorem to find side h but we need to know the slanted side or side DF to use the theorem.

Using triangle DFH, we know that angle H is 90 and angle F is 34. So using triangle interior rule,Angle D equal 56.

We know side FH=11
We know Angle D equal 56
We are trying to find side DF
We know angle H equal 90

We can use law of sines to find side DF

$\frac{fh}{ \sin(d) } = \frac{df}{ \sin(h) }$

Plug in the numbers

$\frac{11}{ \sin(56) } = \frac{df}{ \sin(90) }$

sin of 90 =1 so

$\frac{11}{ \sin(56) } = df$

Side df is about 13.3 inches.

Since we know our slanted side is 13.3 we can set up our pythagorean theorem equation,

$(fh) {}^{2} + (dh) {}^{2} = df {}^{2}$

$(11) {}^{2} +( dh) {}^{2} = (13.3) {}^{2}$

$121 + dh {}^{2} = 176.89$

$(dh) {}^{2} = 55.89$

$\sqrt{55.89} = 7.5$

is approximately 7.5 so dh=7.5 approximately.

Now using base times height times 1/2 multiply them out

$\frac{1}{2} (22)(7.5)$

$82.5$

8 0

3 years ago

Use the Law of Sines. Find the indicated measure to the nearest tenth. In Triangle RST, m∠R =78, m∠T =39, and TS with line on to

vovikov84 [41]

Answer:

RS = 12.2 in ⇒ answer (a)

Step-by-step explanation:

∵ m∠R = 78° , m∠T = 39° , TS = 19

∵ By using sin Rule:

∵ ST/sin∠R = RS/sin∠T

∴ 19/sin78 = RS/sin39

∴ RS = (19 × sin39) ÷ sin 78 = 12.2 in ⇒ answer (a)

5 0

3 years ago