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3 years ago

Factor the problem x^2+4x+8

Mathematics

2 answers:

Luda [366]3 years ago

8 0

Answer:

Not factorable

Step-by-step explanation:

Not factorable

Harrizon [31]3 years ago

8 0

Answer:

SOLVE FOR X (COMPLEX SOLUTION)

x=2+2i

x=2−2i

Step-by-step explanation:

You might be interested in

(3-4i)(-2-21) multiply

evablogger [386]

Answer:

-69 +92 i (here 'i' is imaginary value)

Step-by-step explanation:

step:-

Given (3-4 i)(-2-21)

on multiplication, we get

(3-4 i)(-2-21) = 3(-2) -3(21) - 4 i (-2) +4 i(21)

= -6 -63 + 8 i +84 i

= -69 +92 i

-69 + 92 i is a complex number.

real part x = -69

imaginary part y = 92

6 0

4 years ago

Help asap ill give brainliest

DaniilM [7]

<u>Answer </u><u>:</u>

This figure consists of two shapes that are a rectangle and a square . We will first find the area of rectangle then the square then add them . Let's work on this together ,

Breadth of rectangle = 4 cm
Length of rectangle = 4 + 5 + 3
Length = 12 cm
Area of rectangle = 12 × 4
48 cm²

Area of square ,

Side × Side
5 × 5
25 cm²

Total area of the figure ,

48 + 25
73 cm²

7 0

3 years ago

From a full 50-liter container of a 40% concentration of acid, x liters are removed and replaced with 100% acid. (A) Write the a

padilas [110]

Answer:

See explanation

Step-by-step explanation:

Given:

50 liter container

40% concentration of acid

x liters are removed and replaced with 100% acid

(A)

Acid in 50-liter container = 40% of 50 liters

= (40/100) * 50

= 0.4 * 50

= 20

So there are 20 liters amount of acid in 50 liter container.

Now x liters are removed and replaced with 100% acid

The acid in x-liter

40% of x liters = (40/100) * x = 0.4 * x

When x liters are removed then amount of acid that remained in container:

20 - 40% of x liters = 20 - (40/100) * x = 20 - 0.4 * x

This can also be written as:

(50-x) (40/100) = (40*50/100) - (40*x/100) = 2000/100 - 40x/100 = 20 - 2x/5

Since x liters replaced with 100% acid so this becomes:

20 - 40% of x liters + 100% of x liters

= 20 - (40/100) * x + 100/100 * x

= 20 - (40/100) x + (100/100)x

= 20 + (100-40/100)x

= 20 + (60/100)x

= 20 + 0.6 x

This can also be written as:

20 - 2x/5 + x = 20 + 3x/5 = 20 + 0.6 x

Hence the amount of acid in the final mixture as a function of x:

f(x) = 20 + 0.6 x

(B)

The value of x can not be greater than 50 liters and can not be lesser than 0 liters.

so, range is [0, 50] where both 0 and 50 are inclusive.

(C)

Since final mixture is 50% acid So

Acid = 50% of 50 litres =

= (50/100) * 50

= 1/2 * 50

= 50/2

= 25

Put 25 in the computed function of x

20 + 0.6 x = 25

0.6x = 25 - 20

0.6x = 5

x = 5/0.6

x = 8.333333

x = 8.3 liters

3 0

4 years ago

Which inequality is represented by the graph?

Taya2010 [7]

Answer:

Option B

Step-by-step explanation:

Notice that the region of the inequality is bounded by a line.

The first thing to do is find the equation of this line.

Note that the line intersects the x-axis at $x = 3.5$ and intercepts the y-axis at $y = -2.5$

We know that the equation of a line has the following form:

$y = mx + b$

Where m is the slope of the line and b is the intercept with the y axis.

So we already know that:

$b = -2.5 = -\frac{5}{2}$

Then we know that when $x = 3.5$ then $y = 0$

Thus:

$0 = 3.5m -2.5$

Ahroa we clear m.

$m = \frac{2.5}{3.5}\\\\m = \frac{5}{7}$

Then, the equation of the line is:

$y = \frac{5}{7}x -\frac{5}{2}$

We can also multiply by -2 both sides of the equation and we have:

$-2y = -\frac{10}{7}x +5$

Then:

$\frac{10}{7}x -2y =5$

The option that contains this equation is option B.

To verify it, enter a point within the shaded region, such as the point (0,0), in the selected inequality. If the inequality is satisfied then option B is correct

$\frac{10}{7}x -2y\leq5\\\\\frac{10}{7}(0) -2(0)\leq5\\\\0\leq5$

The inequality is satisfied because 0 is less than 5. Then the correct option is B

7 0

3 years ago

Please help me with this!!

Kaylis [27]

Answer:
2 dollars each

Step-by-step :
Since 7 - 3 is 4
And 2 fries were bought then we have to divide 4 by 2 which equals 2. So 2 dollars were each small package of fries.

8 0

3 years ago