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tatiyna
3 years ago
11

Use elimination to find the solution to the system of equations. 9x + 2y = 59

Mathematics
2 answers:
disa [49]3 years ago
5 0

Answer:

????????????????????

-BARSIC- [3]3 years ago
4 0

Answer:

Step-by-step explanation:

9x + 2y = 59 -> 9x = 59 - 2y -> x = (59-2y)/9

2x + 5y = 4 -> 2(59-2y)/9 + 5y = 4 -> (118 - 4y)/9 +5y = 4

118 - 4y + 45y = 4*9 -> 41y = -82 -> y = -2, thus x = 7

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Evaluate the line integral in Stokes? Theorem to evaluate the surface integral integrate S ( x F) n dS. Assume that n is in the
gtnhenbr [62]

Answer:

Step-by-step explanation:

Consider that F(x,y,z) = (x + y, y + z, z + z)

r(t)=(cos t,4sint,\sqt{5}cost)\\r'(t)=(-sint,4cost,-\sqrt{5}sint)\\F(r(t))=[tex]\int\limits^{2\pi}_0 {F(r(t))r'(t)} \, dt \\\\=\int\limits^{2\pi}_0(cost+4sint,4sint+\sqrt{5}cost+cost)(-sint,4cost,-\sqt{5}sint)dt\\\\=\int\limits^{2\pi}_0(-sintcost-4sin^2t+16costsint+4\sqrt{5}cos^2t-5sintcost-\sqrt{5}sintcost)dt\\\\=\int\limits^{2\pi}_0(10sintcost-4sin^2t+4\sqrt{5}cos^2t-\sqrt{5}sintcost)dt\\\\=\int\limits^{2\pi}_0((10-\sqrt{5})sintcost-(4+4+\sqrt{5})sin^2t+4\sqrt{5})dt\\\\(10-\qrt{5})(0)-(4+4+\sqrt{5}(\pi)+4\sqrt{5}(2\pi)\\\\(\sqrt{5}-1)4\pi)[/tex]

6 0
3 years ago
If you had dollars, how
solong [7]

Answer:

Just how much dollars?

Step-by-step explanation:

If a whole number, then rounded would be the exact same thing. If a decimal,  example, $12.28 then round it to $12.30. Hope this helps!

8 0
3 years ago
The sale price of an item is $180 after a 25% discount is applied. What is the original price of the item?
Valentin [98]
So
100%=original
25% discount
100-25=75
it is 180 sale
75%=180
find 100%

a hack is to recognize that 75/3 times 4=100 so
75%=180
divide 3
25%=60
times 4
100%=240


the real way is proportions
75:180 =100:x
75/180=100/x
multiply both sides by 180x
75x=18000
divide 75
x=240



origitnal price=$240
3 0
3 years ago
Read 2 more answers
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Mamont248 [21]

Answer:

assuming you meant 6x198 do a mental sum for 6x200 (1200) then subtract 6x2(12)to give you 1188

Step-by-step explanation:

brainly.com/question/274291

5 0
2 years ago
Read 2 more answers
For what values of y : is the value of the binomial 5y−1 greater than the value of the fraction 3y−1/4
VashaNatasha [74]

Answer:

y>0.375

Step-by-step explanation:

5 0
3 years ago
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