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3 years ago

WILL MARK BRAINLIEST!

Mathematics

1 answer:

mihalych1998 [28]3 years ago

8 0

Answer:

x= -1, y= 1

Step-by-step explanation:

2x + 6y = 4.........(1)

8x - 5y = 45........(2)

multiply equation (1) by 4

8x + 24y = 16......(3)

subtract equation (3) by (2)

29y = 29

y = 1

then substitute y=1 in equation (1)

2x + 6(1) = 4

solving for x

x = -2/2 = -1

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How do I write the equation of the parabola in intercept form

lord [1]

Answer:

The equation of the parabola in intercept form is $y = -\frac{3}{4}\cdot x\cdot (x-4)$ .

Step-by-step explanation:

The equation of the parabola in intercept form is defined by following formula:

$y = a\cdot (x-r_{1})\cdot (x-r_{2})$ (1)

Where:

$x$ - Independent variable.

$y$ - Dependent variable.

$a$ - Vertex constant.

$r_{1}, r_{2}$ - Intercepts of the parabola.

According to the graph, we find that intercepts are 0 and 4, respectively, and a point in the parabola is $(x,y) = (3, 2.25)$ . If we know that $r_{1} = 0$ , $r_{2} = 4$ and $(x,y) = (3, 2.25)$ , then the vertex constant is:

$a = \frac{y}{(x-r_{1})\cdot (x-r_{2})}$

$a = -\frac{3}{4}$

The equation of the parabola in intercept form is $y = -\frac{3}{4}\cdot x\cdot (x-4)$ .

8 0

3 years ago

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lord [1]

Answer:

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Step-by-step explanation:

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3 years ago

Graph y=sinx and y=cosx in the same viewing window. Which function could be the derivative of the other? Defend answer in terms

lesya [120]

Cos x is the derivative of sin x.

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4 years ago

Um litro de suco é dividido entre três amigos. O primeiro fica com 14 do todo, o segundo fica com 1/3 do total e o terceiro fica

kkurt [141]

Answer:

a) 1/24 do total

Step-by-step explanation:

We have that:

The total is 1.

The first friend gets 1/4 of the total.

The second friend gets 1/3 of the total

The third friend gets 3/8 of the total.

The remaining is x.

$\frac{1}{4} + \frac{1}{3} + \frac{3}{8} + x = 1$

The least common multiple between 4, 3 and 8 is 24. So

$\frac{6 + 8 + 3*3 + 24x}{24} = 1$

$23 + 24x = 24$

$24x = 1$

$x = \frac{1}{24}$

So the correct answer is:

a) 1/24 do total

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3 years ago

Solve 4y - 7 =29<br><br> Quickly done

Murljashka [212]

Answer:

y=9

Step-by-step explanation:

4y-7=29

(add 7 to both sides)

4y=36

(divide both sides by 4)

y=9

7 0

3 years ago