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dalvyx [7]
3 years ago
13

State if the point (-3, -2) is a solution to the system of equations below.

Mathematics
1 answer:
Grace [21]3 years ago
4 0

Answer:

B) Since (-3,-2) does not satisfy both equations, it is not a solution to the

system.

Step-by-step explanation:

The given system of equations is:

{x}^{2}  +  {y}^{2}   + x - 10y - 3 = 0

x + y =  - 4

If (-3,-2) is a solution, then it must satisfy both equations:

Let us substitute into the first equation to get:

{( - 3)}^{2}  +  {( - 2)}^{2}   + ( - 3) - 10( - 2) - 3 = 0

Evaluate the exponents;

9 +  4   - 3  + 20- 3 = 0

27 = 0

This is not true

Also when we substitute into the scond equation, we get;

- 3 +  - 2 =  - 4 \\  - 5 =  - 4

This is also false.

Therefore the point is not a solution.

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A principal of $2600is invested at 6.75% interest, compounded annually. How much will the investment be worth after 14 years
dedylja [7]

Answer:

$6488.19

Step-by-step explanation:

To solve this problem we use the compounded interest formula:

amount  =  principal(1 + (r \n))^({n}{t})

a = $2600(1+(0.0675/1))¹*¹⁴

a = $6488.19

8 0
3 years ago
5X3X17X200X1,098<br><br><br> the X's are multiplication symbols
Sladkaya [172]

Answer:

55998000

Step-by-step explanation:

When you take 5 time 3 you get 15

Then you take 15 and times that by 17 and get 225

then you take that and multiply that to 200 and get 5100

Finally you multiply 5100 to 1098 and get 5598000

3 0
2 years ago
I need help this is urgent!!
harina [27]
If you need an equation it is -3.4x=21.5

You simply divide both sides by -3.4 to get x=-6.32



if that's not right then just get on a calculator and calculate by doing what I said to divide
7 0
3 years ago
If x=7and =-2, determine the value of 6x-4y
SVEN [57.7K]

Answer:

the answer is 50

Step-by-step explanation:

first you plug in the x and y in the equation, making it 6(7)=-4(-2)           then, you multiply the numbers together, making the equation 42+8.                                                    finally, you add those numbers together, giving you the answer 50

8 0
3 years ago
Read 2 more answers
Would appreciate it, if anyone could help with this.
Tema [17]
Since they are intersecting lines, you would equal them to each other.
(5x+4)= (8x-71)
-8x. -8x
-3x + 4 = -71
- 4. -4
-3x = -75
Divide 3x by both sides gets you x = 25
6 0
3 years ago
Read 2 more answers
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