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egoroff_w [7]
3 years ago
10

Someone please help me ASAP!!! I'll give Brainliest and TONS OF POINTS!!!

Mathematics
1 answer:
Feliz [49]3 years ago
6 0

Answer:

in right angle triangle ABD relationship between base and hypotenuse is given by cos angle

Cos A=\frac{base}{hypotenuse}

A={cos }^{ - 1} (\frac{12}{8 \sqrt{3} } ) = {30}^{0}

again

in right angle triangle ACD

relationship between base and hypotenuse is given by cos angle

Cos 30°=\frac{base}{hypotenuse}   =  \frac{8 \sqrt{3} }{x}

\frac{ \sqrt{3} }{2}   =  \frac{8 \sqrt{3} }{x}  \\ x =  \frac{8 \times 2 \sqrt{3} }{ \sqrt{3} }  = 16

x=16 is your answer.

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Draw a rectangular fraction model to explain your thinking. Then, write a multiplication sentence. What is 4/9 x 3/8 ?
ELEN [110]

Answer:

The multiplication sentence is 4/9*3/8=1/6

then for the rectangular fraction model draw two rectangles and in the first one draw 9 boxes and shade in 4. Then, in the second one draw 8 boxes and shade 3.

Step-by-step explanation:

This is an example:

8 0
4 years ago
2x - 3y = 16 5x - 3y = 13 Solve the system of equations. A) (-1, -6) B) (-6, -1) C) (1, - 14 3 ) D) (5, -2)
tiny-mole [99]

Answer:

A (-1,-6)

Step-by-step explanation:

A system of equations is a set of two or more equations which intersect at a point (x,y). This is the solution. Any system can be solved using graphing, elimination or substitution. To solve this system of equations, use elimination. Line up each variable and subtract the like terms.

2x - 3y = 16

5x - 3y = 13

---------------------

-3x      = 3

x = -1

Substitute x = -1

2(-1) - 3y = 16

-2 - 3y = 16

-3y = 18

y = -6

3 0
3 years ago
Simplify 18 - 2[x + (x - 5)].<br>O 13 - X<br>0 13 - 4x<br>08- 4x<br>28 - 4x​
Tresset [83]
11[2x])

Hope this helps !
3 0
3 years ago
△ABC has vertices A(1,1) B(5,5) and C(4,6)
stira [4]

Length in units:

Use phytogoras theorem or measure it by a ruler if your using a graph paper

AB = 5.65 units

AC = 5.83 units

CB = 1.41 units

Perimeter =5.65 + 5.83 + 1.41 = 12.89 units

Area = 1/2 * 1.41 * 5.65 = 3.98units

5 0
2 years ago
1
ankoles [38]

Answer:

A [and B]

Step-by-step explanation:

If x < 5.3 then anything higher than 5.3 makes the statement false.

16 is too high and therefore is the most obvious fallacy.

5.3 would actually make x=5.3 and therefore x wouldn't be less than 5.3 making it also false but this really depends on what your teacher is looking for.

0 is true.

-8.95 is true.

If there is any clarification in the problem you can provide I can give a more definite answer but now it is really a coinflip!

8 0
3 years ago
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