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4 years ago

4x+8x+7=4 in quadratic equation

Mathematics

1 answer:

suter [353]4 years ago

8 0

You would have to solve for x by simplifying both sides of the equation, then isolating the variable.

So, x= -1/4

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Solve this equation and identify the solution

denis-greek [22]

Answer:

(3, -1)

Step-by-step explanation:

The easiest way to solve this system of equations is by elimination:

3x + y = 8

2x - y = 7

Add the two equations together:

(3x + 2x) + (y - y) = (8 + 7)

5x = 15

x = 3

Substitute x back into the equation:

2x - y = 7

2(3) - y = 7

6 - y = 7

- y = 1

y = -1

The fourth option, (3, -1)

8 0

3 years ago

Hello! I would appreciate the help, and please write step by step solutions. Will mark brainliest. Thanks!

Fiesta28 [93]

QUESTION 5

The side length of the first tra-pezoid and the second tra-pezoid are in the ratio $5:7$ .

To find the corresponding ratio of their area, we square each term in the ratio.

The ratio of the area of the first figure, to the ratio of the area of the second is

$5^2:7^2=25:49$

QUESTION 6

The side length of the first figure and the second figure are in the ratio $12:7$ .

To find the corresponding ratio of their area, we square each term in the ratio.

The ratio of the area of the first figure, to the ratio of the area of the second figure is

$12^2:7^2=144:49$

QUESTION 7

Let $h$ represent the height of this triangle.

$\sin 30\degree=\frac{h}{6}$

This implies that;

$h=6\sin 30\degree$

$h=3ft$

The area of the triangle is $=\frac{1}{2}bh$

The base is 9 ft and the height is 3 ft.

We substitute these values to obtain;

$A=\frac{1}{2}(9)(3)$

$A=13.5ft^2$ to the nearest tenth.

QUESTION 8

The area of a parallelogram is $base\times\:height$

Let h represent the height of this parallelogram.

$\sin60\degree=\frac{h}{6}$

$h=6\sin60\degree$

$h=3\sqrt{3}m$

The area of the parallelogram is $=10\times3\sqrt{3}m^2$

$=30\sqrt{3}m^2$

$=52.0m^2$ to the nearest tenth.

7 0

3 years ago

Find the greatest common factor <br> 16u^6w^2x^3 and 20w^5x^4

Katena32 [7]

I hope this helps you

3 0

3 years ago

What is the value of x in the figure below? in this diagram abd cad

sergiy2304 [10]

Answer:

Option E is correct.

Step-by-step explanation:

We have been two similar triangles and we are asked to find out the value of x.

Since we know that corresponding sides of similar triangles are in same ratio. We will set the ratio of corresponding sides to find out our x.

$\frac{AB}{CA} =\frac{BD}{AD} =\frac{AD}{DC}$

Now we will substitute our given values in this ratio.

$\frac{5}{x} =\frac{x}{9}$

Now let us solve for x.

$x^{2} =45$

After taking the square root of both sides of the equation we will get,

$x=\sqrt{45}$

Therefore, option E is the correct choice.

4 1

3 years ago

Read 2 more answers

Please explain how you got he answer no links please :)

charle [14.2K]

Answer:

4 is the gradient

Step-by-step explanation:

choose any two coordinate then apply the gradient equation

10-2= 8

3-1= 2

8/2= 4

4 is the gradient

5 0

3 years ago