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Andre45 [30]
3 years ago
15

1. x² + 4x + 3 = 0

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0

Answer:

1. x = -1 or x = -3

2. x = 1 or x = -3

3. x = 3 or x = -7

4. x = 1/2 or x = -2

5. x = -2/3 or x = 4

Step-by-step explanation:

I'm guessing these are what you needed, you didn't specify.

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A rectangle flower bed is 9 feet wide and 12 feet long .what is the length of the diagonal?​
BigorU [14]

Answer:

15 feet

Step-by-step explanation:

The question talks about;

  • A rectangular flower bed whose dimensions are 12 ft by 9 ft

We are required to determine the length of the diagonal

To answer the question, we need to know the following;

  • All the angles in a rectangle are right angles
  • A diagonal divides a rectangle into two right-angled triangles
  • The dimensions of the rectangle acts as the legs of right angled triangle.

Therefore;

Using Pythagoras theorem;

a² + b² = c²

Where, c is the hypotenuse (in this case the diagonal)

a and b are the shorter sides of the right-angled triangle

Therefore;

c² = 12² + 9²

c² = 144 + 81

   = 225

c = √225

  = 15

Therefore, the length of the diagonal is 15 feet

5 0
3 years ago
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 10 N acts on
Step2247 [10]

Answer:

The force is 12 N

Step-by-step explanation:

* Lets explain how to solve the problem

- Direct variation is a relationship between two variables that can

 be expressed by an equation in which one variable is equal to a

 constant times the other

- If y ∝ x , then y = kx , where k is the constant of variation

* Lets solve the problem

- The force acting on the object varies directly with the object's

  acceleration

∵ The force is F in newtons and a is the acceleration is m/s²

∴ F ∝ a

∴ F = ka

- To find k substitute F and a by the initial values of them

∵ A force of 10 N acts on a certain object, the acceleration of the

  object is 5 m/s²

∵ F = 10 N when a = 5 m/s²

∵ F = ka

∴ 10 = k(5)

- Divide both sides by 5

∴ K = 2

- Substitute the value of k in the equation

∴ F = 2a

- Lets find the force when the acceleration is 6 m/s²

∵ a = 6 m/s²

∴ F = 2(6) = 12

* The force is 12 N

5 0
3 years ago
How much is 2 3/4 cup plus 2 3/4 cup
Viefleur [7K]

Answer:

5.5 US cups

Step-by-step explanation:

5 0
3 years ago
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Can someone tell me what the lcd is??​
Ugo [173]
I think it’s International Classification of Diseases but I’m not sure cause it doesn’t match anything with math good luck though.
7 0
3 years ago
sami gets £50 for her birthday.She buys a magazine costing £1.95, a bag for £7.50 and a pair of shoes for £24.99.How much does s
Lyrx [107]

Answer:

15.56

Step-by-step explanation:

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