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sesenic [268]
3 years ago
10

А 3х + 2y = 82x + 3y = 12​

Mathematics
1 answer:
Tpy6a [65]3 years ago
7 0

Answer:

(0,4)

Step-by-step explanation:

subsistution method

solve equation for y

subsiture the value of y

solve the equation

check the solution

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Solve the system of equations. <br><br> x + y + z = 9<br> -2x + y + 2z = 3<br> x - 4y - z = 2
Vladimir79 [104]

Answer:

(4,-1,6)

Step-by-step explanation:

x=4

y=-1

z=6

5 0
3 years ago
Evaluate 5(x + y)2 when x = 3 and y = 9
irakobra [83]

Hey there!

Answer:\boxed{120}

Explanation:

5(x+y)2 when x = 3 and y = 9

Let's first move to x and y.

x=3\\y=9\\3+9=12

Now multiply 5 by x and y(3+9).

5*12(\text{x and y combined)}=60

Now we have the number 2 left, so we have to multiply 60 by 2.

60*2=120

\boxed{120}\text{ is your final answer.}

Hope this helps!

\text{-TestedHyperr}

4 0
3 years ago
A student earned a grade of 80% on a math test that had20 problems. How many problems on this test did the student answer correc
Georgia [21]

Answer:

Only 16 problems correct

Step-by-step explanation:

Well I thought that since 80% is  4/5 then I should do 20 divided by 5 which will get me 4 and since I'm doing 4/5 I should go all the way up to 80% of 20 which will get me 16.

I'm not making that much sense but

Hope this helps :)

5 0
3 years ago
HELPPP PLZZZZZZZZZZZZZ
Ivanshal [37]
Helloyo!

Answer:
c) Seagull, crow

Explanation:

As seagull and crow are both birds and can fly, both of them are in A and B.


Hope it helps ya.

4 0
4 years ago
Read 2 more answers
Cameron &amp; Brett are trying to sell upper &amp; lower level tickets to two Diamondbacks game to raise money for their club ba
steposvetlana [31]

Answer:

30 Lower level tickets

17 upper level tickets

Step-by-step explanation:

Let:

Lower level tickets = l

Upper level tickets = u

5l + 9u = 303 - - - (1)

8l + 10u = 410 - - - - - (2)

Multiply (1) by 8 and (2) by 5

40l + 72u = 2424 - - - (3)

40l + 50u = 2050 - - - (4)

Subtract (3) from (4)

22u = 374

u = 374 / 22

u = 17

Put u = 17 in (1)

40l + 72(17) = 2424

40l + 1224 = 2424

40l = 2424 - 1224

40l = 1200

l = 1200 / 40

l = 30

30 Lower level tickets

17 upper level tickets

5 0
3 years ago
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