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likoan [24]
3 years ago
8

How many x-intercepts are there in y = –3x2 + 4x + 4

Mathematics
2 answers:
IRINA_888 [86]3 years ago
8 0
You can factor it to find the answer:

<span>–3x^2 + 4x + 4 
</span>–(3x^2 - 4x - 4)
–(3x + 2)(x - 2)

x=-2/3 or 2, which means that there are  x intercepts, at -2/3 and 2.
Yakvenalex [24]3 years ago
7 0
Y = -3x^2 + 4x + 4

Educated guess: There may be about 2 x - intercepts in the equation.
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Si un triángulo tiene una hipotenusa de 15 cm y un cateto que mide 12 cm, ¿cual es la longitud del otro cateto?
BartSMP [9]

Answer:

   

9cm

Explicación:

El teorema de pitagoras nos dice que la hipotenusa al cuadrado es igual a la suma de los catetos al cuadrado:

c^{2} =a^{2} + b^{2}

Donde c es la hipotenusa y a  y b son los catetos.

Por lo cual, podemos reemplazar c por 15cm y a por 12cm :

15^{2} =12^{2} +b^{2}

Finalmente , debemos resolver la ecuación para b, así que b es igual a :

225=144+b^{2} \\225-144=144+b^{2} -144\\81=b^{2} \\\sqrt{81} =b\\9=b

Por lo tanto, la longitud del otro cateto es 9 cm

3 0
3 years ago
Find the dimensions of a deck which will have railings on only three sides. There is 28 m of railing available and the deck must
Roman55 [17]

Answer:

The largest possible area of the deck is 87.11 m² with dimensions;

Width = 9.33 m

Breadth = 9.33 m

Step-by-step explanation:

The area of a given dimension increases as the dimension covers more equidistant dimension from the center, which gives the quadrilateral with largest dimension being that of a square

Given that the railings will be placed on three sides only and the third side will cornered or left open, such that the given length of railing can be shared into three rather than four to increase the area

The length of the given railing = 28 m

The sides of the formed square area by sharing the railing into three while the fourth side is left open are then equal to 28/3 each

The area of a square of side s = s²

The largest possible area of the deck = (28/3)² = 784/9 = 87.11 m² with dimensions;

Width = 28/3 m = 9.33 m

Breadth = 28/3 m = 9.33 m.

5 0
3 years ago
Solve the simultaneous equations 4x-3y=19 and 2x+3y=23​
kogti [31]
The answer is x=7 and y=3

6 0
3 years ago
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Explain how to solve an inequality by finding equivalent inequalities
Free_Kalibri [48]

Answer:

cheat off somebody who has the answer

Step-by-step explanation:


3 0
3 years ago
JK, KL, and JL are all tangent to circle O. JA = 3, JL = 7, and the perimeter of triangle JKL = 26. What Are JK and KL?
sattari [20]
Answer is B) JK=9 and KL=10

you subtract 7 from 26 to get 19 

4 0
3 years ago
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