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Sati [7]
3 years ago
9

explain and illustrate what of means when you find a fraction of another number. what operation do you use when you find parts o

f parts
Mathematics
1 answer:
Keith_Richards [23]3 years ago
7 0
Its called equivalent fractions when you have a whole fraction
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What is the solution to the system of equations?
Trava [24]

Call the two equations above A and B, in order to not confuse them.

A: -2x + 6y = -38

B: 3x - 4y = 32

For this system we have opposites in x and y, so Elimination (or Linear Combination) works best. Either variable works, so let's work with x first and multiply A by 3 and B by 2. This is done so we get opposites in A and B then when added together give zero.

-2x + 6y = -38 ------> multiply by 3 ----> -6x + 18y = -114

3x - 4y = 32 ------> multiply by 2 -----> 6x - 8y = 64

Now we add the new equations. The -6x and 6x are opposites and go away. We are left with

10y = -50. We divide both sides by 10 and get that y = -5.

Now we take y = -5 and put it into an original equation. Let's use A.

-2x + 6y = -38 the original equation A

-2x + 6(-5) = -38 we found y = -5

-2x + (-30) = -38 evaluating and multiplying

-2x - 30 = -38 apply the parentheses

-2x = -8 add 30 to both sides

x = 4 divide on both sides by -2


Thus x = 4 and y = -5, or (4, -5) is the solution.

6 0
3 years ago
Read 2 more answers
How to solve. Y=-4(x-2)squared+4
Amiraneli [1.4K]
What do you mean, "solve"?
y = -4(x-2)² + 4 
the line is a parabol with a maximum (2;4)
it's roots are  -4(x-2)² + 4  = 0 => (x-2)² = 1 => x-2 = 1 => x = 3
                                                              => x-2 = -1 => x = 1 
symetrical axe: x = 2
is that all you need?

3 0
2 years ago
Which of the following shows a correct solution process for │ x + 8│- 5= 2?
Vilka [71]
X1=-15
X2=-1
I think this is the answer
3 0
2 years ago
Read 2 more answers
Number 31<br> Any help please?
Alex73 [517]
2,200*14=30,800
2,000*13=26,000
14+13=27
30,800+26,000=56,000

Your answer is C, 13(:
5 0
3 years ago
4x²-6xy<br> PLZ<br> HELP<br> I<br> GIVE<br> 5<br> STARS
Mkey [24]

yep I get the same thing what the other person is right

4 0
2 years ago
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