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Rudik [331]
3 years ago
5

What is the solution to this system of equations? * 11) x - 3y=9 x+3y=-3

Mathematics
2 answers:
Alika [10]3 years ago
8 0
In point form (3,-2)
Equation form
Zinaida [17]3 years ago
5 0

Answer: x=3 and y=-2

Step-by-step explanation:

x-3y=9

x+3y=-3

Add the functions together

2x=6

x=3

Plug X into the first equation

3-3y=9

-3y=6

y=-2

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Abc is equilateral with AB=3x-2,BC=2x+4, and CA= x+10
yan [13]
AB = BC, so 3x-2 = 2x+4.  Also, BC = CA, so 2x+4=x+10.

Solve this system of linear equations:

3x-2 = 2x+4
2x+4=x+10 => x=6

Check:  Does AB=BC?  Does AB=BC?

Does 3(6)-2 = 2(6)+4?  Does 16=16?  YES.
Does BC = CA?  Does 2(6)+4 = 6+10?  YES

x = 6 (answer)
7 0
3 years ago
A right triangle has the side legnths 4 units, 5 units, and x units. It is unknown if the missing length is the longest or short
Free_Kalibri [48]

Answer:

For longest x = 6.4

For shortest x = 3

Step-by-step explanation:

Given a right angle triangle with lengths 4 units and 5 units and x units .

x can be gotten using Pythagoras theorem .

If x Is the longest side , then

x^2 = 5^2 + 4^2

= 5x5 + 4x4

= 25 + 16

x^2 = 41

x = squared root of 41

x = 6.4

If x is the shortest side ,

x^2 = 5^2 - 4^2

= 5x5 - 4x4

= 25 - 16

x^2 = 9

x = squared root of 9

x = 3

4 0
3 years ago
The number w and 0.8 are additive inverses.
umka2103 [35]

Since, the number w and 0.8 are additive inverses.

A number 'a' is said to have an additive inverse '-a' if "a+ (-a)= 0".

Since, 'w' and '0.8' are additive inverses of each other such that w + 0.8 = 0

Therefore, the value of 'w' should be '-0.8' so that -0.8 + 0.8 = 0.

So, the value of 'w' is =0.8

Now, Refer to the attached image which represents the position of 0.8 , w ( that is -0.8) and the sum of 0.8 and w.

Sum of 0.8 and w = 0.8 + w

= 0.8 +(-0.8)

= 0.

3 0
3 years ago
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I need help please!!
Usimov [2.4K]

Answer:

Step-by-step explanation:

radius r = 5 cm

Height h = 5 cm

Volume of cylinder = πr²h

                                = π * 5 * 5 * 5

                                = 125π cm³

8 0
3 years ago
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99 POINTS AND BRAINLIST!!!! BE FIRST WITH THE "RIGHT" ANSWER!!
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Answer:

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