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rjkz [21]
4 years ago
10

Best/correct answer gets brainliest.

Mathematics
1 answer:
viva [34]4 years ago
7 0
7y-3=5y+3
2y=6
y=3
so the length of XY = 7*3-3 =18
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Please help me I really need help
Fofino [41]

Answer:

A, C

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

the ∠A is adjacent (adj) to  AB and opposite (Opp) of BC and AB is the hypotenuse (Hyp) of the triangle

which one of the above trig functions fits that?

sin(Ф) = BC / AC   is sin(Ф)= Opp / Hyp , so choice A) works

cos(Ф) = BC / AC  is not cos(Ф) = Opp / Hyp  so choice B) does not work

cos(Ф) = BA / AC  is cos(Ф) = Adj / Hyp  so choice C)  works

AC / BC is just a ratio   it's not the angle , so D) doesn't work

8 0
3 years ago
PLEASE HELP ASAP<br> solve for x
liq [111]

Answer:

29.44

Step-by-step explanation:

Since we know the both the measure of the angle and the adjacent line of the angle, we can use tan to find x.

tan is (Opposite/Adjacent Line)

\tan(31)  =  \frac{x}{49} \\ 49 \tan(31) = x \\  29.44 = x

That is the answer

- Kan Academy Advance

3 0
2 years ago
Two vectors, X and Y form a right angle. Vector X is 48 inches long and vector Y is 14 inches long. The length of the resultant
krok68 [10]
First Photo - This is the problem drawn into the paper. If you have two vectors and they form a right angle (90°) between them, the Resultant Vector will appear like this, from the right angle.

Obs.:
1 - VR = Resultant Vector;
2 - The angle formed by the VR and the two vectors ISN'T a bisector.

Second Photo - You can move the bottom extremity of the Y vector to the arrow of the X vector and the tips from the Y and VR vectors will meet, forming a Right Triangle, whose the VR is the Hypotenuse (Opposes the right angle / Larger Side).

Now you just put the values in the Pythagorean Theorem:
{a}^{2} = {b}^{2} + {c}^{2}
Where VR is the "a".

{vr}^{2} = {x}^{2} + {y}^{2} \\ {vr}^{2} = {48}^{2} + {14}^{2} \\ {vr}^{2} = 2304 + 196 \\ {vr}^{2} = 2500 \\ vr = \sqrt{2500} \\ vr = 50 \: inches

8 0
4 years ago
Find the X and Y intercepts of the graph x + 3y = 13​
Luden [163]

Answer: x-intercept 13,0 y 0, \frac{13}{3}

Step-by-step explanation:

5 0
3 years ago
What is the percent change of 36;63
STatiana [176]
First, find the difference.
63-36=27
Then, divide by the original number.
27/36=0.75
Then, put it in percentage form.
75%
7 0
3 years ago
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