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skad [1K]
3 years ago
13

30-[(9x2)-(3x4)] numerical expression ;)

Mathematics
2 answers:
alex41 [277]3 years ago
4 0
30-[(9x2)-(3x4)]
30-[18-(3x4)]
30-(18-12)
30-6
24
Verizon [17]3 years ago
3 0
30-[(9*2)-(3*4)]
30-(18-12)
30-6
24
The answer is:24
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Lubov Fominskaja [6]

Answer:

okay let's start

Step-by-step explanation:

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3 0
2 years ago
  1) 5x-2y=4.         2) 3x-5y=13  x-2y=5<br>3x+y=9
Natali [406]
\left\{\begin{array}{ccc}5x-2y=4\\3x+y=9&/\cdot2\end{array}\right\\+\left\{\begin{array}{ccc}5x-2y=4\\6x+2y=18\end{array}\right\\----------\\.\ \ \ \ \ 11x=22\ \ \ \ /:11\\.\ \ \ \ \ \ \ x=2\\\\3\cdot2+y=9\\6+y=9\\y=9-6\\y=3\\\\Answer:x=2;\ y=3


\left\{\begin{array}{ccc}3x-5y=13\\x-2y=5\end{array}\right\\\left\{\begin{array}{ccc}3x-5y=13\\x=2y+5\end{array}\right\\\\substitute:\\\\3(2y+5)-5y=13\\6y+15-5y=13\\y=13-15\\y=-2\\\\x=2\cdot(-2)+5=-4+5=1\\\\Answer:x=1;\ y=-2.
5 0
3 years ago
The segments shown below could form a triangle.<br> A. True<br> B. False
Whitepunk [10]
Very true. A triangle consists of three sides so think of how u could make a triangle with those three lines
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3 years ago
Beth has 30 days to train for the Olympics. She swims 20 laps on the first day, then each day after that she swims two more laps
hjlf
Wait, what’s the question?
7 0
3 years ago
At a carnival, food tickets cost $2 each and ride tickets cost $3 each. A total of $1,240 was collected at the carnival. The num
horrorfan [7]

in the equation as we can say x= 2y-10.

so, substitute x=2y-10 everywhere then the x in 1240 gets cancelled with 2y-10 then solve the remaining you will get 4y-20+3y=1240

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y=1260/7

y=180

then substitute the value of y everywhere

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2x+3(180)=1240

2x=1240-540

2x=700

x=350

DONE.

8 0
3 years ago
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