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vladimir1956 [14]
3 years ago
6

0=x^2+4x+1. Khan academy

Mathematics
1 answer:
34kurt3 years ago
4 0
Now, to find 'x' you will apply the Null Factor Law. This means you will now let 'x' = 0, and simply move the -2 over to the other side to find your answer. Note: since we are using a perfect square, x will only have one value since there is only one answer (x-2) in the brackets, meaning in this case we can ignore the exponent (as the answers will be the same). If there was more than one answer in the bracket (e.g. (x-4) and (x-6)), then we would apply Null Factor Law to both brackets and solve for x.

(x−2)=5

x=5+2

x=7
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*15 points easy question*
maw [93]

Answer:

\sqrt{13}

Step-by-step explanation:

We are given an isosceles triangle. We need to remember the important rule that the base angles are equal. In this question we need to find the value of 'x' using a perpendicular height of 3 and a base length of 4. In this question we can half the triangle in half to help us find the value of x. Also we need to use Pythagoras theorem to help us find 'x'. Pythagoras states that a² + b² = c² so we want to find the hypotenuse of the triangle. If we half the triangle we get 2 triangle both with a base length of 2 and a perpendicular height of 3 so,

⇒ State Pythagoras theorem

→ a² + b² = c²

⇒ Substitute in the values

→ 3² + 2² = c²

⇒ Simplify

→ 9 + 4 = c²

⇒ Simplify further

→ 13 = c²

⇒ Square root both sides to find the value of 'c'

→\sqrt{13}  =  c

The value of x is the square root of 13

8 0
3 years ago
Convert 15 m² to in². How many square inches are in 15 square meters?
Sati [7]

Answer:

23250

Step-by-step explanation:

23250 square inches are in 15 square meters.

3 0
3 years ago
Draw a diagram that shows 1/5 times 30 equals 6
MrMuchimi

Total number = 30

1/5 of 30 = 1/5 x 30 = 6

The attached figures show the total number of filled circles in five lines. Each line have “6” filled circles.

So 5 lines having 6 filled circles = 5 x 6 = 30

<span>Every line represents “1/5” of total amount “30”. Which proved that 1/5 of 30 is equal to 6. </span>

3 0
3 years ago
Read 2 more answers
A plane of symmetry divides a solid into __________. A) two congruent solids B) three congruent solids C) unequal parts D) diffe
Cerrena [4.2K]
The best and most correct answer among the choices provided by your question is the first choice or letter A.

<span>A plane of symmetry divides a solid into two congruent solids.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
8 0
3 years ago
If Mrs. Ramsey divides 5 pounds of flour equally into three bowls, what is the weight of flour in one bowl? A) 3 5 pound Elimina
Mariulka [41]
Hi there!

The key in the question is "divide". Therefore, we divide 5 by 3

5/3=1.6 pounds

I don't think any of these are right.

3 0
3 years ago
Read 2 more answers
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