X2+4x+3=0 what is the quadratic

Answers

Answer 1

Answer: $\sf\ For\ ax^2+bx+c=0\ the\ quadratic\ formula\ is\ x=\frac{-b\± \sqrt{b^(2)-4ac} }{2a}.\nYou\ can\ use\ this\ formula\ to\ solve\ the\ problem.\n\n\n\nI'm\ presuming\ that\ your\ equation\ is\ x^2+4x+3=0\n\n\n\na=1\n\n\ b=4\n\n c=3\n\n\n\nPlug\ it\ in\ the\ quadratic\ formula.\n\n\n\nx=\frac{-b\± \sqrt{b^(2)-4ac} }{2a}\n\nx=\frac{-(4)\± \sqrt{(4)^(2)-4(1)(3)} }{2(1)}\n\nx=(-4\± √(16-4(3)) )/(2)\n\nx=(-4\± √(16-12) )/(2)\n\nx=(-4\± √(4) )/(2)\n\nx=(-4\±2)/(2)$

$\sf\ So\ now\ we\ have\ x=(-4+2)/(2)\ and\ x=(-4-2)/(2).\n\n\n\nx=(-4+2)/(2)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=(-4-2)/(2)\n\nx=(-2)/(2)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=(-6)/(2)\n\nx=-1\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-3\n\n\n\n{\boxed{\sf\ x=-1\ \ or\ \ x=-3}$

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Find the value of x when b=5 and C=2 in the following formula x=2(b-c2)

Answers

assuming that c2 means c squred or c to second power

sub
x=2(5-2^2)
PEMDAS
parenthasees first
insid there is an exonent
first do that
2^2=4
now we have

x=2(5-4)
simplify
x=2(1)
multiply
x=2

th value of x is 2

Convert the given amount to the given unit4. 63 yd; feet

5. 168h; days

6. 2.5lb; ounces

7. 200 cm; meters

8. 4 min; seconds

9. 5kg; pounds

Answers

Answer:

4- 189 feet

5- 7 days

6- 40 ounces

7- 2 meters

8- 240 seconds

9- 11 lbs

Step-by-step explanation:

Write the fraction as a mixed number in the simplest form.
62/7

Answers

$(62)/(7)=(56+6)/(7)=(56)/(7)+(6)/(7)=8+(6)/(7)=8(6)/(7)$

How to simplify -64^(1/3)

Answers

$-64^{(1)/(3)}=\sqrt[3]{-64}= \sqrt[3]{(-4)^3} =-4$

You need to find a number that you can multiply by itself 3 times and wind up with -64 .

Like [ N x N x N = -64 ] .

Try some small numbers:

1 x 1 x 1 = 1
2 x 2 x 2 = 8
3 x 3 x 3 = 27
4 x 4 x 4 = 64 . . . There it is ... almost ! The right number, but the wrong sign.

Now try (-4).

Which of the following values are solutions to the inequality -5 ≤ x + 5? A) -7 B) -10 C) -3

Answers

Answer:

x ≥ -10

Step-by-step explanation:

We can solve the given inequality for the variable x by subtracting 5 from both sides:

-5 ≤ x + 5

- 5 - 5

-10 ≤ x

Optionally, we can swap the sides and flip the sign:

x ≥ -10

Further Note

The '≥' sign means "greater than or equal to", which means that the variable being compared can be either the exact value of the constant or anything greater than it.

Alberto wants to keep their favorite tree from being uprooted by heavy winds. They plan to tie 3 sections of rope to a band on the trunk of the tree, 5 feet above the ground. They will tie each section of the rope to a stake in the ground 12 feet out from the base of the tree. How much rope will he need altogether?

Answers

Answer:

39 ft

Step-by-step explanation:

Using the description as a guideline I have drawn out the situation (badly drawn) as seen in the picture below. From the picture, we see that we need to find x which is the length of one of the ropes. Once we have this length we simply multiply it by 3 to find out how much rope we need altogether. Since this is the diagonal of a triangle we can use the Pythagorean theorem to solve for x.

Pythagorean theorem: $a^(2) +b^(2) = c^(2)$ .... which a and b are the two sides while x is the diagonal.

$5^(2) +12^(2) = x^(2)$

$25 + 144 = x^(2)$

$169 = x^(2)$ ... now we square root both sides

$13 = x$

Now that we have the length of one of the ropes we simply multiply this by 3 to find the total amount of rope needed.

13 * 3 = 39 ft

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