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densk [106]
3 years ago
9

I think of a number multiply it by 2, subtract 5 and multiply the result by 2

Mathematics
1 answer:
zalisa [80]3 years ago
7 0
Call our original number n. Then here's what we did in an equation:
(n*2-5)*2=2

We can solve this for n:
n*2-5=1
n*2=6
n=3
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Show all of your work. solve this system by ELIMINATION! this is most of my grade please help if you know!
Andreyy89
If my handwriting sucks; (-2x+7y=3
3x-7y=-1)
=
(7y=3+2x
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3x2-7y=-1=1

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7 0
3 years ago
What is the perimeter of a rhombus whose diagonals measure 42cm and 56cm?
Trava [24]

Answer:

676

Step-by-step explanation:

d1×d2/2

42×56/2

1352/2=676

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3 0
3 years ago
Read 2 more answers
Compare and order the following numbers<br> 52-55,37 2
marshall27 [118]
Greatest to least is
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4 0
3 years ago
2) Richard, Henry and Gavin share some sweets in the ratio 4:1:3. Richard gets 7 more sweets
sineoko [7]

Answer:

6

Step-by-step explanation:

Richard gets 7 more sweets than Gavin which would probably make Richard have the most so in total he should have around 8 whilst Gavin has 1 so right now we have 4:1:?. Basing off the fact that Richard would have the most sweets Henry would have to have 6 sweets to be able to divide half of it for 3. 4:1:3

5 0
2 years ago
What's the answer to this equation?
Serggg [28]
The answer is 5b²/6c

Ok so you just have to simplify
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Then you do as the picture above says.

5 0
3 years ago
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