2 years ago

Please help me

Mathematics

2 answers:

Papessa [141]2 years ago

7 0

The answer will be true.

Rzqust [24]2 years ago

7 0

The answer is true. This was just on my quiz and I know its correct.

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Use the linear combination method to solve the system of equations. â€"2. 1x 4y = 5. 3 2. 1x â€" 5. 5y = â€"0. 2 What is the sol

RoseWind [281]

The solution to the systems of equations is (7, 3)

Given the systems of equations expressed as:

-x + 4y = 5 ....................1

x - 5y = -2 ...................... 2

Add both equations to have:

-x+x + 4y - 5y = 5 - 2

4y-5y = -3

-y = -3

y = 3

Substitute y = 3 into equation 1:

-x + 4(3) = 5

-x + 12 = 5

-x = 5 - 12

-x = -7

x = 7

Hence the solution to the systems of equations is (7, 3)

Learn more on simultaneous equations here: brainly.com/question/148035

4 0

2 years ago

What is the value of ?<br> 18 - (2 x ? ) = ? x 4

Dmitry_Shevchenko [17]

Answer:

?= 3

Step-by-step explanation:

let x = ？

18-2x=4x

6x=18x

x=3

6 0

3 years ago

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Find the x-intercept of the parabola with vertex (1,-13) and y-intercept (0,-11).

Advocard [28]

1. find equation

general solutions are:
$y = a x^{2} +bx +c \\ \\ \frac{dy}{dx} = 2ax +b$

for P(0,-11)

$-11 = 0a + 0b +c$ ⇒ $c = -11$

for p(1,-13)
$-13 = 1a + 1b -11 \\ a+b = -2$

and

$0 = 2a + b \\ b = -2a$

solve for a and b:
$a - 2a = -2 \\ a = 2 \\ b = -4$

the total equation is now:

$y = 2 x^{2} -4x -11$

To find the x-intercept set y=0 and solve for x

$0 = 2 x^{2} -4x-11$

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3 years ago

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What is the solution of the equations y=-x and y=-14X+1?

oksano4ka [1.4K]

The solution as in where do they intersect? if so, it would be 0.0769 and -0.0769

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2 years ago

Factor 2x2 − 4x − 30 completely.

Luda [366]

I hope this helps you