3 years ago

Can someone please solve this problem?Quick!

Mathematics

1 answer:

Marta_Voda [28]3 years ago

6 0

Do you know how to use elimination method?

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Which ordered pairs lie on the graph of the exponential function f(x)=-3(x-1)+2

Whitepunk [10]

Answer:

(-1,2), (1,1), (0,0), (4,-25)

Step-by-step explanation:

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2 years ago

(x^2-7x)^2+4(x^2-7x)-96 (x 2 −7x) 2 +4(x 2 −7x)−96

natita [175]

Answer:

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Step-by-step explanation:

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2 years ago

If x-y = 40 and x+y = 70, then what is the value of x squared -y squared ?

OlgaM077 [116]

Let's see what to do buddy...

____________________________

Reminder:

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

So we need to just Multiply above equations like this :

$x + y = 70$

$x - y = 40$

$(x + y)(x - y) = 70 \times 40$

${x}^{2} - {y}^{2} = 2800$

____________________________

And we're done.

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7 0

3 years ago

Find the leg of each isosceles right triangle when the hypotenuse is 5 square root 6

kozerog [31]

Hypotenuse = 5√6

Let the length of each leg be x, since it is Isosceles .

x² + x² = (5√6)²

2x² = (5 * 5 * √6 * √6)

2x² = 150

x² = 150/2

x² = 75

x = √75

x = √(25 * 3)

x = √25 * √3

x = 5√3

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3 years ago

Given the equation 2(3x − 4) = 5x + 6, solve for the variable. Explain each step and justify your process.

blagie [28]

2(3x-4) = 5x+6
First, expand the bracket.
6x-8=5x+6
Next, move the variables to the same side.
x-8=6
Move the -8 to the other side, change to +
x=6+8
x=14
Charlie’s solution is incorrect. When expanding the bracket, he changed the - to a +.

6 0

2 years ago