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Alexxx [7]
3 years ago
5

How do you solve -2x+y=4 with (1,2)

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Answer:

Step-by-step explanation:

-2x+y=4

-2(1)+2=4

-2+2=0, not 4.

Therefore, (1, 2) is not a solution to this equation.

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What is the minimum value for g(x)=x^2-10x+16? Enter your answer in the box.
Anna71 [15]

Answer:

- 9

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

To obtain this form use the method of completing the square

add/subtract (half the coefficient of the x- term)² to x² - 10x

g(x) = x² - 10x + (- 5)² - (- 5)² + 16

      = x² - 10x + 25 - 25 + 16

     = (x - 5)² - 9 ← in vertex form

vertex = (5, - 9), hence

minimum value = - 9

6 0
4 years ago
If 5a+b=14 then a = what<br> explain how you got it pls
Trava [24]

Answer:

a = \frac{14 - b}{5}

Step-by-step explanation:

The rule to know and follow is:

You can add, subtract, multiply or divide by anything so long as the same thing is done to both sides of the equals sign;

5a + b = 14

If we want to get: "a = ...", then we use the rule to isolate the variable a on one side of the equation;

Firstly, we subtract b from both sides:

5a + b - b = 14 - b

5a = 14 - b

Then, divide both sides by 5:

\frac{5a}{5} = \frac{14 - b}{5} \\\\ a = \frac{14 - b}{5}

8 0
2 years ago
The dashed lines show a part of the garden that is in the shape of a square. What is the area, in square feet, of the entire gar
Nina [5.8K]

Answer:

40 square ft

Step-by-step explanation:

If its a square than 20 times 20 equals 40

3 0
3 years ago
What is 530,000,000 divided by 15 million?
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

35.3333333333

6 0
3 years ago
PLEASE PLEASE HELP
padilas [110]

Answer:

(Y × 10) + X = 30

hope it helps

Step-by-step explanation:

Y = Cost of each ticket

X = cost of entry fee

so he bought 10 tickets

so you multiply cost of each ticket ( y ) by 10

then you add the entry fee ( x ) to find the total cost ( $30 )

6 0
3 years ago
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