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katrin2010 [14]
3 years ago
7

HELP GEOMETRY find x and y

Mathematics
1 answer:
GenaCL600 [577]3 years ago
8 0
A well-known formula gives us that y = \frac{6x-3x}{2} = \frac{3x}{2}.  Additionally, the sum of the angles in a circle is 360, so 6x+3x=9x=360, so x=40^\circ.  Therefore, y = 60^\circ.
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Howmet Corporation needs $200,000 in 5 years.
Bogdan [553]
:)
The formula of the future value of annuity ordinary is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/n)]
So we need to solve for pmt
Pmt=fv÷[(1+r/k)^(kn)-1)÷(r/n)]
Pmt=200,000÷(((1+0.10÷4)^(4×5)
−1)÷(0.10÷4))=7,829.43...answer

Hope it helps
3 0
3 years ago
Can I please get some help
Anika [276]

Answer:

a. 6.93 b. 5 c. 6.72 d. 3.46

Step-by-step explanation:

a.  √4^2- 4(4)(-2)

      Evaluate the power

    √16-4×4(-2)

      Multiply

    √16-16(-2) = √16-(-32) = √16+32 Since 2 negatives equal a positive.

      Add

    √48

      Find square root

     √48= 6.92820323028-- rounded-- 6.93

b.   √1^2-4(1)(-6)

      Evaluate the power

     √1-4(1)(-6)

       Multiply

      √1-(-24) = √1+24 Since 2 negatives equal a positive.

       Add

       √25

       Find the square root

       √25=5

c.     √1^2-4(1)(-11)

       Evaluate the power

       √1-4(1)(-11)

       Multiply

       √1-(-44) = √1+44 Since 2 negative equal a positive.

       Add

       √45

       Find the square root

       √45= 6.7082039325-- rounded-- 6.72

d.     √6^2-4(3)(2)

        Evaluate the power

        √36-4(3)(2)

        Multiply

        √36-24

        Subtract

        √12

        Find the square root

        √12= 3.46410161514-- rounded-- 3.46

3 0
4 years ago
Two equivalent expressions are shown in the equation where a and b are both integers.
Aleksandr-060686 [28]

Answer:

B=6

Step-by-step explanation:

3 0
3 years ago
You are wallpapering a wall 10 feet wide and 12 feet high with a square window with 3 foot sides. How many square feet of wallpa
kolbaska11 [484]
Hey there!


First you need to see how much you need to buy, and when you do 10 x 12 = 120.


So you need at least 120 feet to cover the wall.
 Now you have to factor in the wall, when you do 3 x 3 (B x H) = 9.
Now do, 120 - 9 = 111.

So you need 111 square feet to cover the wall.

Hope this helps!
6 0
3 years ago
5x-4y-6z = -3<br> X-3y+z=-1<br> -3x-6y+7z=1
PilotLPTM [1.2K]

Answer:

x=-\frac{41}{55},y=\frac{2}{55},z=-\frac{8}{55}

Step-by-step explanation:

5x-4y-6z=-3...............eq(1)\\\\x-3y+z=-1.....................eq(2)\\\\-3x-6y+7z=1.................eq(3)

eq(1)-5\times eq(2)

5x-4y-6z-5(x-3y+z)=-3-5\times (-1)\\\\11y-11z=2\\\\y-z=\frac{2}{11}...................eq(4)

3\times eq(2)+eq(3)

3(x-3y+z)-3x-6y+7z=3\times (-1)+1\\\\-15y+10z=-2\\\\-y+\frac{2}{3}z=-\frac{2}{15}.........eq(5)

eq(4)+eq(5)

y-z-y+\frac{2}{3}z=\frac{2}{11}-\frac{2}{15}\\\\-\frac{1}{3}z=\frac{8}{165}\\\\z=-\frac{8\times 3}{165}\\\\z=-\frac{8}{55}

From eq(4)

y=z+\frac{2}{11}=-\frac{8}{55}+\frac{2}{11}\\\\y=\frac{2}{55}

Substitute the value of y and z in eq(2)

x-3\times \frac{2}{55}-\frac{8}{55}=-1\\\\x-\frac{14}{55}=-1\\\\x=-1+\frac{14}{55}\\\\x=\frac{41}{55}

6 0
3 years ago
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