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elena55 [62]
3 years ago
14

Hello! Do the ones that are Boxed! Pls do this asap This is due in 5 mins! 5 points and brainiest! P.S the ones with the red Xs

are not to be done
Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:

I don’t see nun hmu wit a link and I can try it

Step-by-step explanation:

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Solve the simultaneous equation x+y/4=1/2 and x-3y/3=2
Feliz [49]

Answer:

x+y/4 = 1/2

x-3y/3 = 2

move variables to one side:

multiply the first equation by 4 to get: x+y =2

and the second equation by 3 to get: x-3y =6

then subtract the equations to cancel out x:

 x+y = 2

- x-3y = 6

then u get

y--3y = 2-6

4y = -4

y=-1

substitute to solve for x:

x-1 / 4 =1/2

x-1 = 2

x=3

check:

3+-1

2/4= 1/2

correct!!!

3 0
3 years ago
Read 2 more answers
The second hand of a clock makes a full revolution once every minute. What is its angle of rotation after 20 seconds? After 45 s
nikklg [1K]
360/60 = 6

6 degrees every second

6*20 = 120 degrees


120 degrees after 20 seconds


6 * 45 = 270

270 degrees after 45 seconds


Hope I helped!

Let me know if you need anything else!

~ Zoe
7 0
3 years ago
Which rational numbers fall between 2.7 and 2.8 on a number line
Slav-nsk [51]
Some rational numbers are
2.71, 2.72, 2.73, 2.74, 2.75, 2.76, 2.77, 2.78, 2.79
2.711, 2.712 2.713....
2.721, 2.722, 2.723....
2.731....
I think you get the point! Hope this helped!
7 0
3 years ago
Simplify and state the excluded value for (18r^2)/(12r)
Viefleur [7K]

Answer:

216r^3

Step-by-step explanation:

18*r^2*12*r

216*r^3

216r^3

I hope it's help!

7 0
3 years ago
The size of a television screen is given as 95 cm, correct to the nearest 5 cm.
timofeeve [1]

Answer:

U B = 100.5

Step-by-step explanation:

the upper bound of the size of the television screen= 95.5 since it is corrected to the nearest 5 then the U B =100.5 cm

7 0
3 years ago
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