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Snowcat [4.5K]
2 years ago
6

NEED ANSWER ASAP PLEASE

Mathematics
1 answer:
sertanlavr [38]2 years ago
4 0
D. $6
2. 300
adding more cuz character limit
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Help please ............ solve<br><br>Solve<br><br> <br><br>X-3y=z<br>-x+2y=-3
Alenkasestr [34]
You don't need 3 equations to get a general solution.  To do this use the equations x-3y-z=0 and -x+2y+0z= -3.  Start out by letting z = t.  Then solving those 2 equations simultaneously, your x's cancel out leaving you with -y-z=-3.  But since z=t, then -y=-3+t or y=3-t.  Now sub that in for y in the first equation, along with the fact that z=t to get x-3(3-t)-t = 0 and solve for x. x=9-2t.  So a general solution for this would be (9-2t, 3-t, t)
8 0
3 years ago
Find the value of x and the value of y
serg [7]

Answer:

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

use Cos for y .... b/c we see that function above has all the pieces we are going to work with

use Sin for x .. for the same reason above

Cos(30) = y / 4\sqrt{2}

4\sqrt{2}Cos(30) = y

4\sqrt{2}\sqrt{3}/2 = y

2\sqrt{6} = y

leave the answer for y like that.. it's in  'exact" form

now for x

Sin(30) = x / 4\sqrt{2}

4\sqrt{2}Sin(30) = x

4\sqrt{2}* 1/2 = x

2\sqrt{2} = x

and leave your answer for x like that as it's in it's exact form.  :)

oh and I see the answer in the list.. do you?  :)

8 0
2 years ago
(2x2y) (-4x3y4) (5xy2)
andrew11 [14]

Step-by-step explanation:

Hey there! Just wanted to tell you you're amazing and you will do great in school!

8 0
2 years ago
What is the answer to this problem
liq [111]

Answer:

y=2/3x+4

Step-by-step explanation:

2/3 is the slope and 4 is the  y int

8 0
2 years ago
Read 2 more answers
Two sides of a triangle have length 10 and 17. What is the range of the length of the 3rd side
andriy [413]

Answer:

13.7477270849 to 19.7230829233.

Step-by-step explanation:

1. Using the pythagorean theorem, a²+b²=c², we try different combinations of given lengths 10 and 17.

2. If 10 and 17 are legs and 10²+17²=√389 = 19.7230829233, then c=19.7230829233.

3. If 10 is a leg and 17 is a hypotenuse,

10²+b²=17²

100+b²=289

b²=189

b=13.7477270849

4. The case of 17 is a leg and 10 is a hypotenuse is not possible because the hypotenuse is the longest side.

5. The range of the length of the 3rd side is 13.7477270849 to 19.7230829233.

7 0
2 years ago
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