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Shalnov [3]
3 years ago
8

What is the value of X?

Mathematics
1 answer:
Leviafan [203]3 years ago
4 0

Answer:

x=20

Step-by-step explanation:

First, find LJ

Angle L = 60 (180 - 30 - 90)

The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.

cos(L)=adj/hyp

cos(60)=LJ/40√2

LJ = cos(60)*40√2

LJ = 20√2

Now you can use LJ to find x. You also know the value of each angle, 45

x=20√2⋅cos(45)

x=20

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Prove that the values of unknown are correct. I need the answer fasttt. 6x -10 =20.​
Likurg_2 [28]

Answer:

Step-by-step explanation:

6x-10=20

6x=20+10

x=30/6

x=5

to prove 6x-10=30

substitute the value of x

6x-10

6*5-10

30-10

20

20=20  hence proved.

4 0
3 years ago
Find the area of the figure round to the nearest tenth
vodomira [7]

Answer:

Area of given figure = 60.8 mm² (Approx.)

Step-by-step explanation:

Given:

Length of figure = 9.3 mm

Width of figure = 7.8 mm

Height of triangular cut = 3 mm

Find:

Area of given figure

Computation:

Area of given figure = [(Length)(Width)] - Area of triangle

Area of given figure = [(9.3)(7.8)] - [(1/2)(b)(h)]

Area of given figure = [(9.3)(7.8)] - [(1/2)(7.8)(3)]

Area of given figure = [(9.3)(7.8)] - [(1/2)(7.8)(3)]

Area of given figure = [72.54] - [(1/2)(7.8)(3)]

Area of given figure = [72.54] - [11.7]

Area of given figure = 60.8 mm² (Approx.)

5 0
3 years ago
If Tony earns five dollars on Monday and five dollars on Tuesday is that a sum of zero? need help I’m in 4th
True [87]
No it’s will be a total of $10
$5 + $5 =$10
one hang= 5 fingers so two 5’s are 10.
6 0
3 years ago
Read 2 more answers
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vodomira [7]

Answer:

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7 0
3 years ago
ABCD is a trapezium.<br> DC = 3AB<br> DA=<br> (3)<br> DB<br> (1)<br> Find the exact magnitude of BC.
Whitepunk [10]
The exact mangitude of the BC would be
5 0
3 years ago
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