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denis23 [38]
3 years ago
5

I'm not sure how to find x​

Mathematics
1 answer:
gavmur [86]3 years ago
5 0
To answer this, add all of those angles. A triangle’s angles equal to 180. Then, combine like terms and solve.
5x - 40 + 3x + 2x + 20 = 180
10x - 20 = 180
10x -20 + 20 = 180 + 20
10x = 200
10x / 10 = 200 / 10
x = 20

hope that helps!! if you need any more help please comment and link ur question :)
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Rico thinks of a number between 30 and 40 that is represented by
Anna007 [38]
Hello,

x,y,z∈ IN

x=\frac{3}{4}*y
y=\frac{1}{3}*z

140
46\leq\ y\ \leq\ 50 ==>\ \frac{46*3}{4}\leq\frac{3y}{4}\leq\frac{50*3}{4}
35\ \leq\ z\ \leq\ 37==>
 x∈{35,36,37}
 y∈{47,48,49}
 z∈{141,144,147}

We must go futher:

if x=35 then y=4*35/3=46.666 not good , not whole
if x=36 then y=4*36/3=48 ok
if x=37 then y=37*4/3=49.333.. not good

So there is only one solution (36,48,144) for (x,y,z)

No problem with z for z=3/1*4/3*x=4x ==>whole.









7 0
3 years ago
Please I need help it’s an emergency
aev [14]

Answer:

A. Cos θ = 16/42

Step-by-step explanation:

The angle the ladder makes with the floor = θ

Hypotenuse = length of the ladder = 42 m

Adjacent = Distance from the bottom of the ladder to the wall = 16 m

Therefore to find θ, we would apply the trigonometric function, CAH:

Cos θ = adj/hyp

Which is:

Cos θ = 16/42

8 0
3 years ago
Help pls im strugglin
loris [4]

66 is the correct answer

8 0
4 years ago
Olve x/6 = 20. A. x = 120 B. x = 26 C. x = 14 D. x = 3
erastovalidia [21]
Let's go:

\frac{x}{6} = 20 \\\ x = 20.6 \\ x = 120

A)

I hope I helped you.
5 0
4 years ago
Read 2 more answers
Costco had a 15%-off sale on their televisions. The sale price on a particular new television is $649. (a) What was the original
irakobra [83]
X-0.15x = 649
Solve for x, and the answer is 763.53
8 0
3 years ago
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