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yuradex [85]
3 years ago
11

The sum of two numbers is 10. if one number is subtracted from the other the result is -2. find two numbers

Mathematics
1 answer:
maksim [4K]3 years ago
6 0

Form an equation to describe the situation
x+y=10 
Then use the other information they gave you and form another equation
x-y=2
You can add the two equations together, and you see that the y variables cancel out(elimination)
2x=12
Solve for one variable and then plug it back into the original equation
x=6
6+y=10
y=4
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ella has 53 to the third power pieces of candy and cristina has 67 to the third power pieces of candy how many pieces of candy d
saw5 [17]

449640 pieces of candy total. Wow, what a sweet treat

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3 0
4 years ago
Given g(x)=3/x^2+2x find g^-1(x)
Sever21 [200]

Answer:

A

Step-by-step explanation:

g(x) =  \frac{3}{{x}^{2}  + 2x}  \\  {x}^{2}  + 2x -  \frac{3}{g(x)}  = 0 \\ x =  \frac{1}{2}  \Big( - 2 +  \sqrt{12  +   \frac{12}{g(x)} }\Big)  \\ x =  - 1 +  \sqrt{1 \pm  \frac{3}{g(x)} }

Now replace $x$ by $g^{-1}(x)$ and $g(x)$ by $x$ and you have your answer.

8 0
4 years ago
Given that 5 x − 8 y = 32 Find x when y = 1
Alona [7]

Hello there!

5x-8(1)=32

5x-8=32

5x=32+8

5x=40

x=8

Brainliest?

6 0
3 years ago
Read 2 more answers
Use the Pythagorean theorem to find the lengths of the sides of the right triangle.
Gelneren [198K]

9514 1404 393

Answer:

  in the order (5m, 3m, 2m+2), ...

  • 5, 3, 4
  • (2+√34)/3, (2+√34)/5, (34+2√34)/15 ≈ (2.6103, 1.5662, 3.0441)

Step-by-step explanation:

There are two possible solutions:

<u>5m is the hypotenuse</u>

  (5m)² = (3m)² +(2m+2)²

  25m² = 9m² +4m² +8m +4

  3m² -2m -1 = 0 . . . . . . . . . . . write in standard form, divide by 4

  (m -1)(3m +1) = 0 . . . . . . . . factor

The positive solution for m is the value that makes m-1=0. It is m=1.

The side lengths are ...

  5m = 5 . . . hypotenuse

  3m = 3

  2m+2 = 4

__

<u>2m+2 is the hypotenuse</u>

  (2m+2)² = (5m)² +(3m)²

  15m² -4m -2 = 0 . . . . . . . write in standard form, divide by 2

Then the solutions using the quadratic formula are ...

  m = (-(-4) ± √((-4)² -4(15)(-2)))/(2(15)) = (4 ± √136)/30 = (2±√34)/15

The positive solution for m is ...

  m = (2+√34)/15 ≈ 0.522063

Then the side lengths of the triangle are ...

  (2m +2) = (34 +2√34)/15 ≈ 3.0441 . . . hypotenuse

  5m = (2 +√34)/3 ≈ 2.6103

  3m = (2 +√34)/5 ≈ 1.5662

5 0
3 years ago
36x34=?<br> 45x67=?<br> Without google or calculator <br><br> (I already know the answers)
stellarik [79]

Answer:

1224 and 3015

Step-by-step explaination

You have to do 36 lined up with 34 to get 1224

Make sure you add a zero the second time you multiply

For the second promblem, you line up 45 with 67 to get 3015.

4 0
3 years ago
Read 2 more answers
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