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RideAnS [48]
3 years ago
15

Solve x^2 +5x - 14 = 0​

Mathematics
1 answer:
Grace [21]3 years ago
5 0

Answer:

x = - 7, x = 2

Step-by-step explanation:

Given

x² + 5x - 14 = 0

Consider the factors of the constant term (- 14) which sum to give the coefficient of the x- term (+ 5)

The factors are + 7 and - 2, since

7 × - 2 = - 14 and 7 - 2 = + 5 , thus

(x + 7)x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x - 2 = 0 ⇒ x = 2

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3. Find cos(A). Show your work and reduce the ratio if necessary.
anygoal [31]

Answer:

cosA = \frac{3}{5}

Step-by-step explanation:

cosA = \frac{adjacent}{hypotenuse} = \frac{AB}{AC} = \frac{30}{50} = \frac{3}{5}

5 0
3 years ago
a rectangular prism has a volume of 1374.28 cubic inches.The prism is 9.4 inches wide and 17.2 inches long.What is the height of
NISA [10]
The volume V of a prism can be found by:
The volume of a rectangular prism can be found through:
V=lwh
Where l is the length, w is the width, and h is the height.

The height can be found by rearranging the equation to:
h= \frac{V}{wl}

Take the volume (1374.28) and divide it by the length times the width (9.4*17.2=161.68).
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6 0
3 years ago
ILL MARK BRAINIEST IF YOU CAN DO THIS RIGHT!!!
Bumek [7]

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Step-by-step explanation:  To find slope take 2 points that lie on the line and use this formula to solve:  <em> </em>I will use (0, -2) and (2, -3) to solve

                                                                       ↑    ↑           ↑   ↑

y2 - y1                                                             x1  y1          x2  y2

-----------

x2 - x1

So, for this question, substitute the x and y values from the points above to solve.

-3 - (-2)      

----------- =  - 1/2

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Hope this helped. :)

 

5 0
2 years ago
If x -9 is a factor of x^2 -5x-36 , what is the other factor ?
faust18 [17]

Answer:

(x + 4) (x - 9)

Step-by-step explanation:

Factor the following:

x^2 - 5 x - 36

The factors of -36 that sum to -5 are 4 and -9. So, x^2 - 5 x - 36 = (x + 4) (x - 9):

Answer: (x + 4) (x - 9)

3 0
2 years ago
Two or more expressions joined by an inequality sign is called
marta [7]

Answer:

inequality

Step-by-step explanation:

Inequality are two or more expressions joined by an inequality sign is called

6 0
2 years ago
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