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4 years ago

HELP!!! PLEASE!!!!

Mathematics

2 answers:

Nana76 [90]4 years ago

6 0

Step-by-step explanation:

a triangle is 180 degree

so: 180-100 is 80 degress

80-30 is 50 degress

therefore angle 3 is 50 degrees

yuradex [85]4 years ago

4 0

Answer:

50 degrees.

Step-by-step explanation:

The angles of a triangle will always add up to be 180, so add and subtract to find the missing value. :)

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How do you solve each system of equations?

stiv31 [10]

Answer:

$x=1,y=3,z=1$

Step-by-step explanation:

$4x-4y+4z=-4$

$4x=-4+4y-4z$

$x=-1+y-z$

Substitute $x=-1+y-z$ into second equation:

$4\left(-1+y-z\right)+y-2z=5$

$-4+4y-4z+y-2z=5$

$5y-6z-4=5$

$y=\frac{6z+9}{5}$

Substitute $x=-1+y-z$ and $y=\frac{6z+9}{5}$ into the third equation:

$\frac{-41z-54}{5}+3=-16$

$-41z-54=-95$

$z=1$

Substitute $z=1$ into $y=\frac{6z+9}{5}$ :

$y=3$

Plug in y and z values into $x=-1+y-z$ :

$x=1$

4 0

3 years ago

Simplify: (sq root of) a^2 if a>0 (sq root of) 36x^2 if x≤0

tresset_1 [31]

Answer:

Step-by-step explanation:

1. (sq root of) a^2 if a>0 => √(a^2) = ±a

2. (sq root of) 36x^2 if a>0 => ±6x

7 0

3 years ago

Al, Tom and Joe share €3000.

agasfer [191]

Answer:

Tom's share = €800

Step-by-step explanation:

Given that:

Amount shared by Al, Tom and Joe = €3000

Ratio of Al's share to Tom's share = 5 : 4

Joe's share = 1.5(Tom's share) = 1.5(4) = 6

Therefore,

Ratio of Al, Tom and Joe = 5 : 4 : 6

Let,

x be the number of times of amount each get.

5x + 4x + 6x = 3000

15x = 3000

Dividing both sides by 15

$\frac{15x}{15}=\frac{3000}{15}\\x=200$

Tom's share = 4x = 4(200) = €800

Hence,

Tom's share = €800

5 0

3 years ago

Given that pentagon ABCDE ≅ pentagon FGHIJ, find the value of m.

I am Lyosha [343]

Thank you for posting your question here at brainly. Feel free to ask more questions. The best and most correct answer among the choices provided by the question is A. 2 . 

Hope my answer would be a great help for you.

7 0

3 years ago

The following triangular prism has a base that is a right triangle.

schepotkina [342]

Answer:

The Answer is 175.86 cm^2

Step-by-step explanation:

4.3*5.2/2*2=22.36 cm^2

6.75*10=67.5 cm^2

10*4.3*2=86 cm^2

86+22.36+67.5=175.86 cm^2

Hoped this helped ^^

7 0

3 years ago